720 lines
21 KiB
Plaintext
720 lines
21 KiB
Plaintext
# 2005 July 28
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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# This file implements regression tests for SQLite library. The
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# focus of this file is testing the use of indices in WHERE clauses
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# based on recent changes to the optimizer.
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#
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# $Id: where2.test,v 1.15 2009/02/02 01:50:40 drh Exp $
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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# Build some test data
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#
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do_test where2-1.0 {
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execsql {
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BEGIN;
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CREATE TABLE t1(w int, x int, y int, z int);
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}
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for {set i 1} {$i<=100} {incr i} {
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set w $i
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set x [expr {int(log($i)/log(2))}]
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set y [expr {$i*$i + 2*$i + 1}]
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set z [expr {$x+$y}]
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ifcapable tclvar {
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execsql {INSERT INTO t1 VALUES($::w,$::x,$::y,$::z)}
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} else {
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execsql {INSERT INTO t1 VALUES(:w,:x,:y,:z)}
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}
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}
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execsql {
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CREATE UNIQUE INDEX i1w ON t1(w);
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CREATE INDEX i1xy ON t1(x,y);
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CREATE INDEX i1zyx ON t1(z,y,x);
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COMMIT;
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}
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} {}
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# Do an SQL statement. Append the search count to the end of the result.
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#
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proc count sql {
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set ::sqlite_search_count 0
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return [concat [execsql $sql] $::sqlite_search_count]
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}
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# This procedure executes the SQL. Then it checks to see if the OP_Sort
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# opcode was executed. If an OP_Sort did occur, then "sort" is appended
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# to the result. If no OP_Sort happened, then "nosort" is appended.
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#
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# This procedure is used to check to make sure sorting is or is not
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# occurring as expected.
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#
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proc cksort {sql} {
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set data [execsql $sql]
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if {[db status sort]} {set x sort} {set x nosort}
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lappend data $x
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return $data
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}
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# This procedure executes the SQL. Then it appends to the result the
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# "sort" or "nosort" keyword (as in the cksort procedure above) then
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# it appends the name of the table and index used.
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#
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proc queryplan {sql} {
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set ::sqlite_sort_count 0
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set data [execsql $sql]
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if {$::sqlite_sort_count} {set x sort} {set x nosort}
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lappend data $x
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set eqp [execsql "EXPLAIN QUERY PLAN $sql"]
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# puts eqp=$eqp
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foreach {a b c x} $eqp {
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if {[regexp { TABLE (\w+ AS )?(\w+) USING.* INDEX (\w+)\y} \
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$x all as tab idx]} {
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lappend data $tab $idx
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} elseif {[regexp { TABLE (\w+ AS )?(\w+)\y} $x all as tab]} {
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lappend data $tab *
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}
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}
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return $data
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}
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# Prefer a UNIQUE index over another index.
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#
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do_test where2-1.1 {
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queryplan {
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SELECT * FROM t1 WHERE w=85 AND x=6 AND y=7396
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}
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} {85 6 7396 7402 nosort t1 i1w}
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# Always prefer a rowid== constraint over any other index.
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#
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do_test where2-1.3 {
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queryplan {
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SELECT * FROM t1 WHERE w=85 AND x=6 AND y=7396 AND rowid=85
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}
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} {85 6 7396 7402 nosort t1 *}
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# When constrained by a UNIQUE index, the ORDER BY clause is always ignored.
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#
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do_test where2-2.1 {
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queryplan {
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SELECT * FROM t1 WHERE w=85 ORDER BY random();
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}
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} {85 6 7396 7402 nosort t1 i1w}
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do_test where2-2.2 {
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queryplan {
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SELECT * FROM t1 WHERE x=6 AND y=7396 ORDER BY random();
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}
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} {85 6 7396 7402 sort t1 i1xy}
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do_test where2-2.3 {
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queryplan {
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SELECT * FROM t1 WHERE rowid=85 AND x=6 AND y=7396 ORDER BY random();
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}
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} {85 6 7396 7402 nosort t1 *}
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# Efficient handling of forward and reverse table scans.
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#
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do_test where2-3.1 {
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queryplan {
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SELECT * FROM t1 ORDER BY rowid LIMIT 2
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}
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} {1 0 4 4 2 1 9 10 nosort t1 *}
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do_test where2-3.2 {
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queryplan {
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SELECT * FROM t1 ORDER BY rowid DESC LIMIT 2
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}
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} {100 6 10201 10207 99 6 10000 10006 nosort t1 *}
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# The IN operator can be used by indices at multiple layers
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#
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ifcapable subquery {
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do_test where2-4.1 {
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queryplan {
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SELECT * FROM t1 WHERE z IN (10207,10006) AND y IN (10000,10201)
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AND x>0 AND x<10
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ORDER BY w
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}
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} {99 6 10000 10006 100 6 10201 10207 sort t1 i1zyx}
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do_test where2-4.2 {
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queryplan {
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SELECT * FROM t1 WHERE z IN (10207,10006) AND y=10000
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AND x>0 AND x<10
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ORDER BY w
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}
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} {99 6 10000 10006 sort t1 i1zyx}
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do_test where2-4.3 {
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queryplan {
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SELECT * FROM t1 WHERE z=10006 AND y IN (10000,10201)
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AND x>0 AND x<10
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ORDER BY w
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}
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} {99 6 10000 10006 sort t1 i1zyx}
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ifcapable compound {
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do_test where2-4.4 {
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queryplan {
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SELECT * FROM t1 WHERE z IN (SELECT 10207 UNION SELECT 10006)
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AND y IN (10000,10201)
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AND x>0 AND x<10
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ORDER BY w
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}
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} {99 6 10000 10006 100 6 10201 10207 sort t1 i1zyx}
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do_test where2-4.5 {
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queryplan {
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SELECT * FROM t1 WHERE z IN (SELECT 10207 UNION SELECT 10006)
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AND y IN (SELECT 10000 UNION SELECT 10201)
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AND x>0 AND x<10
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ORDER BY w
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}
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} {99 6 10000 10006 100 6 10201 10207 sort t1 i1zyx}
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}
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do_test where2-4.6a {
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queryplan {
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SELECT * FROM t1
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WHERE x IN (1,2,3,4,5,6,7,8)
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AND y IN (10000,10001,10002,10003,10004,10005)
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ORDER BY x
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}
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} {99 6 10000 10006 nosort t1 i1xy}
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do_test where2-4.6b {
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queryplan {
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SELECT * FROM t1
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WHERE x IN (1,2,3,4,5,6,7,8)
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AND y IN (10000,10001,10002,10003,10004,10005)
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ORDER BY x DESC
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}
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} {99 6 10000 10006 nosort t1 i1xy}
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do_test where2-4.6c {
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queryplan {
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SELECT * FROM t1
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WHERE x IN (1,2,3,4,5,6,7,8)
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AND y IN (10000,10001,10002,10003,10004,10005)
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ORDER BY x, y
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}
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} {99 6 10000 10006 nosort t1 i1xy}
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do_test where2-4.6d {
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queryplan {
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SELECT * FROM t1
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WHERE x IN (1,2,3,4,5,6,7,8)
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AND y IN (10000,10001,10002,10003,10004,10005)
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ORDER BY x, y DESC
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}
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} {99 6 10000 10006 sort t1 i1xy}
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# Duplicate entires on the RHS of an IN operator do not cause duplicate
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# output rows.
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#
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do_test where2-4.6x {
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queryplan {
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SELECT * FROM t1 WHERE z IN (10207,10006,10006,10207)
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ORDER BY w
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}
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} {99 6 10000 10006 100 6 10201 10207 sort t1 i1zyx}
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do_test where2-4.6y {
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queryplan {
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SELECT * FROM t1 WHERE z IN (10207,10006,10006,10207)
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ORDER BY w DESC
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}
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} {100 6 10201 10207 99 6 10000 10006 sort t1 i1zyx}
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ifcapable compound {
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do_test where2-4.7 {
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queryplan {
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SELECT * FROM t1 WHERE z IN (
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SELECT 10207 UNION ALL SELECT 10006
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UNION ALL SELECT 10006 UNION ALL SELECT 10207)
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ORDER BY w
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}
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} {99 6 10000 10006 100 6 10201 10207 sort t1 i1zyx}
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}
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} ;# ifcapable subquery
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# The use of an IN operator disables the index as a sorter.
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#
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do_test where2-5.1 {
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queryplan {
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SELECT * FROM t1 WHERE w=99 ORDER BY w
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}
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} {99 6 10000 10006 nosort t1 i1w}
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ifcapable subquery {
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do_test where2-5.2a {
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queryplan {
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SELECT * FROM t1 WHERE w IN (99) ORDER BY w
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}
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} {99 6 10000 10006 nosort t1 i1w}
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do_test where2-5.2b {
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queryplan {
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SELECT * FROM t1 WHERE w IN (99) ORDER BY w DESC
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}
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} {99 6 10000 10006 nosort t1 i1w}
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}
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# Verify that OR clauses get translated into IN operators.
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#
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set ::idx {}
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ifcapable subquery {set ::idx i1w}
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do_test where2-6.1.1 {
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queryplan {
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SELECT * FROM t1 WHERE w=99 OR w=100 ORDER BY +w
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}
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} [list 99 6 10000 10006 100 6 10201 10207 sort t1 $::idx]
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do_test where2-6.1.2 {
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queryplan {
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SELECT * FROM t1 WHERE 99=w OR 100=w ORDER BY +w
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}
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} [list 99 6 10000 10006 100 6 10201 10207 sort t1 $::idx]
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do_test where2-6.2 {
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queryplan {
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SELECT * FROM t1 WHERE w=99 OR w=100 OR 6=w ORDER BY +w
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}
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} [list 6 2 49 51 99 6 10000 10006 100 6 10201 10207 sort t1 $::idx]
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do_test where2-6.3 {
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queryplan {
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SELECT * FROM t1 WHERE w=99 OR w=100 OR 6=+w ORDER BY +w
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}
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} {6 2 49 51 99 6 10000 10006 100 6 10201 10207 sort t1 *}
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do_test where2-6.4 {
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queryplan {
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SELECT * FROM t1 WHERE w=99 OR +w=100 OR 6=w ORDER BY +w
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}
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} {6 2 49 51 99 6 10000 10006 100 6 10201 10207 sort t1 *}
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set ::idx {}
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ifcapable subquery {set ::idx i1zyx}
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do_test where2-6.5 {
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queryplan {
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SELECT b.* FROM t1 a, t1 b
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WHERE a.w=1 AND (a.y=b.z OR b.z=10)
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ORDER BY +b.w
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}
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} [list 1 0 4 4 2 1 9 10 sort a i1w b $::idx]
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do_test where2-6.6 {
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queryplan {
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SELECT b.* FROM t1 a, t1 b
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WHERE a.w=1 AND (b.z=10 OR a.y=b.z OR b.z=10)
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ORDER BY +b.w
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}
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} [list 1 0 4 4 2 1 9 10 sort a i1w b $::idx]
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if {[permutation] != "no_optimization"} {
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# Ticket #2249. Make sure the OR optimization is not attempted if
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# comparisons between columns of different affinities are needed.
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#
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do_test where2-6.7 {
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execsql {
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CREATE TABLE t2249a(a TEXT UNIQUE, x CHAR(100));
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CREATE TABLE t2249b(b INTEGER);
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INSERT INTO t2249a(a) VALUES('0123');
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INSERT INTO t2249b VALUES(123);
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}
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queryplan {
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-- Because a is type TEXT and b is type INTEGER, both a and b
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-- will attempt to convert to NUMERIC before the comparison.
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-- They will thus compare equal.
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--
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SELECT b,a FROM t2249b CROSS JOIN t2249a WHERE a=b;
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}
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} {123 0123 nosort t2249b * t2249a sqlite_autoindex_t2249a_1}
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do_test where2-6.9 {
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queryplan {
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-- The + operator removes affinity from the rhs. No conversions
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-- occur and the comparison is false. The result is an empty set.
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--
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SELECT b,a FROM t2249b CROSS JOIN t2249a WHERE a=+b;
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}
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} {nosort t2249b * t2249a sqlite_autoindex_t2249a_1}
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do_test where2-6.9.2 {
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# The same thing but with the expression flipped around.
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queryplan {
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SELECT b,a FROM t2249b CROSS JOIN t2249a WHERE +b=a
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}
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} {nosort t2249b * t2249a sqlite_autoindex_t2249a_1}
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do_test where2-6.10 {
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queryplan {
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-- Use + on both sides of the comparison to disable indices
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-- completely. Make sure we get the same result.
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--
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SELECT b,a FROM t2249b CROSS JOIN t2249a WHERE +a=+b;
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}
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} {nosort t2249b * t2249a sqlite_autoindex_t2249a_1}
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do_test where2-6.11 {
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# This will not attempt the OR optimization because of the a=b
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# comparison.
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queryplan {
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SELECT b,a FROM t2249b CROSS JOIN t2249a WHERE a=b OR a='hello';
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}
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} {123 0123 nosort t2249b * t2249a sqlite_autoindex_t2249a_1}
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do_test where2-6.11.2 {
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# Permutations of the expression terms.
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queryplan {
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SELECT b,a FROM t2249b CROSS JOIN t2249a WHERE b=a OR a='hello';
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}
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} {123 0123 nosort t2249b * t2249a sqlite_autoindex_t2249a_1}
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do_test where2-6.11.3 {
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# Permutations of the expression terms.
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queryplan {
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SELECT b,a FROM t2249b CROSS JOIN t2249a WHERE 'hello'=a OR b=a;
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}
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} {123 0123 nosort t2249b * t2249a sqlite_autoindex_t2249a_1}
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do_test where2-6.11.4 {
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# Permutations of the expression terms.
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queryplan {
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SELECT b,a FROM t2249b CROSS JOIN t2249a WHERE a='hello' OR b=a;
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}
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} {123 0123 nosort t2249b * t2249a sqlite_autoindex_t2249a_1}
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ifcapable explain&&subquery {
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# These tests are not run if subquery support is not included in the
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# build. This is because these tests test the "a = 1 OR a = 2" to
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# "a IN (1, 2)" optimisation transformation, which is not enabled if
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# subqueries and the IN operator is not available.
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#
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do_test where2-6.12 {
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# In this case, the +b disables the affinity conflict and allows
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# the OR optimization to be used again. The result is now an empty
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# set, the same as in where2-6.9.
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queryplan {
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SELECT b,a FROM t2249b CROSS JOIN t2249a WHERE a=+b OR a='hello';
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}
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} {nosort t2249b * t2249a sqlite_autoindex_t2249a_1}
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do_test where2-6.12.2 {
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# In this case, the +b disables the affinity conflict and allows
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# the OR optimization to be used again. The result is now an empty
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# set, the same as in where2-6.9.
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queryplan {
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SELECT b,a FROM t2249b CROSS JOIN t2249a WHERE a='hello' OR +b=a;
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}
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} {nosort t2249b * t2249a sqlite_autoindex_t2249a_1}
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do_test where2-6.12.3 {
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# In this case, the +b disables the affinity conflict and allows
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# the OR optimization to be used again. The result is now an empty
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# set, the same as in where2-6.9.
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queryplan {
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SELECT b,a FROM t2249b CROSS JOIN t2249a WHERE +b=a OR a='hello';
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}
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} {nosort t2249b * t2249a sqlite_autoindex_t2249a_1}
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do_test where2-6.13 {
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# The addition of +a on the second term disabled the OR optimization.
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# But we should still get the same empty-set result as in where2-6.9.
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queryplan {
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SELECT b,a FROM t2249b CROSS JOIN t2249a WHERE a=+b OR +a='hello';
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}
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} {nosort t2249b * t2249a sqlite_autoindex_t2249a_1}
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}
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# Variations on the order of terms in a WHERE clause in order
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# to make sure the OR optimizer can recognize them all.
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do_test where2-6.20 {
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queryplan {
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SELECT x.a, y.a FROM t2249a x CROSS JOIN t2249a y WHERE x.a=y.a
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}
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} {0123 0123 nosort x sqlite_autoindex_t2249a_1 y sqlite_autoindex_t2249a_1}
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ifcapable explain&&subquery {
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# These tests are not run if subquery support is not included in the
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# build. This is because these tests test the "a = 1 OR a = 2" to
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# "a IN (1, 2)" optimisation transformation, which is not enabled if
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# subqueries and the IN operator is not available.
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#
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do_test where2-6.21 {
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queryplan {
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SELECT x.a,y.a FROM t2249a x CROSS JOIN t2249a y
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WHERE x.a=y.a OR y.a='hello'
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}
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} {0123 0123 nosort x sqlite_autoindex_t2249a_1 y sqlite_autoindex_t2249a_1}
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do_test where2-6.22 {
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queryplan {
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SELECT x.a,y.a FROM t2249a x CROSS JOIN t2249a y
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WHERE y.a=x.a OR y.a='hello'
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}
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} {0123 0123 nosort x sqlite_autoindex_t2249a_1 y sqlite_autoindex_t2249a_1}
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do_test where2-6.23 {
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queryplan {
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SELECT x.a,y.a FROM t2249a x CROSS JOIN t2249a y
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WHERE y.a='hello' OR x.a=y.a
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}
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} {0123 0123 nosort x sqlite_autoindex_t2249a_1 y sqlite_autoindex_t2249a_1}
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}
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# Unique queries (queries that are guaranteed to return only a single
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# row of result) do not call the sorter. But all tables must give
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# a unique result. If any one table in the join does not give a unique
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# result then sorting is necessary.
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#
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do_test where2-7.1 {
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cksort {
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create table t8(a unique, b, c);
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insert into t8 values(1,2,3);
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insert into t8 values(2,3,4);
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create table t9(x,y);
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insert into t9 values(2,4);
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insert into t9 values(2,3);
|
|
select y from t8, t9 where a=1 order by a, y;
|
|
}
|
|
} {3 4 sort}
|
|
do_test where2-7.2 {
|
|
cksort {
|
|
select * from t8 where a=1 order by b, c
|
|
}
|
|
} {1 2 3 nosort}
|
|
do_test where2-7.3 {
|
|
cksort {
|
|
select * from t8, t9 where a=1 and y=3 order by b, x
|
|
}
|
|
} {1 2 3 2 3 sort}
|
|
do_test where2-7.4 {
|
|
cksort {
|
|
create unique index i9y on t9(y);
|
|
select * from t8, t9 where a=1 and y=3 order by b, x
|
|
}
|
|
} {1 2 3 2 3 nosort}
|
|
|
|
} ;# if {[permutation] != "no_optimization"}
|
|
|
|
# Ticket #1807. Using IN constrains on multiple columns of
|
|
# a multi-column index.
|
|
#
|
|
ifcapable subquery {
|
|
do_test where2-8.1 {
|
|
execsql {
|
|
SELECT * FROM t1 WHERE x IN (20,21) AND y IN (1,2)
|
|
}
|
|
} {}
|
|
do_test where2-8.2 {
|
|
execsql {
|
|
SELECT * FROM t1 WHERE x IN (1,2) AND y IN (-5,-6)
|
|
}
|
|
} {}
|
|
execsql {CREATE TABLE tx AS SELECT * FROM t1}
|
|
do_test where2-8.3 {
|
|
execsql {
|
|
SELECT w FROM t1
|
|
WHERE x IN (SELECT x FROM tx WHERE rowid<0)
|
|
AND +y IN (SELECT y FROM tx WHERE rowid=1)
|
|
}
|
|
} {}
|
|
do_test where2-8.4 {
|
|
execsql {
|
|
SELECT w FROM t1
|
|
WHERE x IN (SELECT x FROM tx WHERE rowid=1)
|
|
AND y IN (SELECT y FROM tx WHERE rowid<0)
|
|
}
|
|
} {}
|
|
#set sqlite_where_trace 1
|
|
do_test where2-8.5 {
|
|
execsql {
|
|
CREATE INDEX tx_xyz ON tx(x, y, z, w);
|
|
SELECT w FROM tx
|
|
WHERE x IN (SELECT x FROM t1 WHERE w BETWEEN 10 AND 20)
|
|
AND y IN (SELECT y FROM t1 WHERE w BETWEEN 10 AND 20)
|
|
AND z IN (SELECT z FROM t1 WHERE w BETWEEN 12 AND 14)
|
|
}
|
|
} {12 13 14}
|
|
do_test where2-8.6 {
|
|
execsql {
|
|
SELECT w FROM tx
|
|
WHERE x IN (SELECT x FROM t1 WHERE w BETWEEN 10 AND 20)
|
|
AND y IN (SELECT y FROM t1 WHERE w BETWEEN 12 AND 14)
|
|
AND z IN (SELECT z FROM t1 WHERE w BETWEEN 10 AND 20)
|
|
}
|
|
} {12 13 14}
|
|
do_test where2-8.7 {
|
|
execsql {
|
|
SELECT w FROM tx
|
|
WHERE x IN (SELECT x FROM t1 WHERE w BETWEEN 12 AND 14)
|
|
AND y IN (SELECT y FROM t1 WHERE w BETWEEN 10 AND 20)
|
|
AND z IN (SELECT z FROM t1 WHERE w BETWEEN 10 AND 20)
|
|
}
|
|
} {10 11 12 13 14 15}
|
|
do_test where2-8.8 {
|
|
execsql {
|
|
SELECT w FROM tx
|
|
WHERE x IN (SELECT x FROM t1 WHERE w BETWEEN 10 AND 20)
|
|
AND y IN (SELECT y FROM t1 WHERE w BETWEEN 10 AND 20)
|
|
AND z IN (SELECT z FROM t1 WHERE w BETWEEN 10 AND 20)
|
|
}
|
|
} {10 11 12 13 14 15 16 17 18 19 20}
|
|
do_test where2-8.9 {
|
|
execsql {
|
|
SELECT w FROM tx
|
|
WHERE x IN (SELECT x FROM t1 WHERE w BETWEEN 10 AND 20)
|
|
AND y IN (SELECT y FROM t1 WHERE w BETWEEN 10 AND 20)
|
|
AND z IN (SELECT z FROM t1 WHERE w BETWEEN 2 AND 4)
|
|
}
|
|
} {}
|
|
do_test where2-8.10 {
|
|
execsql {
|
|
SELECT w FROM tx
|
|
WHERE x IN (SELECT x FROM t1 WHERE w BETWEEN 10 AND 20)
|
|
AND y IN (SELECT y FROM t1 WHERE w BETWEEN 2 AND 4)
|
|
AND z IN (SELECT z FROM t1 WHERE w BETWEEN 10 AND 20)
|
|
}
|
|
} {}
|
|
do_test where2-8.11 {
|
|
execsql {
|
|
SELECT w FROM tx
|
|
WHERE x IN (SELECT x FROM t1 WHERE w BETWEEN 2 AND 4)
|
|
AND y IN (SELECT y FROM t1 WHERE w BETWEEN 10 AND 20)
|
|
AND z IN (SELECT z FROM t1 WHERE w BETWEEN 10 AND 20)
|
|
}
|
|
} {}
|
|
do_test where2-8.12 {
|
|
execsql {
|
|
SELECT w FROM tx
|
|
WHERE x IN (SELECT x FROM t1 WHERE w BETWEEN 10 AND 20)
|
|
AND y IN (SELECT y FROM t1 WHERE w BETWEEN 10 AND 20)
|
|
AND z IN (SELECT z FROM t1 WHERE w BETWEEN -4 AND -2)
|
|
}
|
|
} {}
|
|
do_test where2-8.13 {
|
|
execsql {
|
|
SELECT w FROM tx
|
|
WHERE x IN (SELECT x FROM t1 WHERE w BETWEEN 10 AND 20)
|
|
AND y IN (SELECT y FROM t1 WHERE w BETWEEN -4 AND -2)
|
|
AND z IN (SELECT z FROM t1 WHERE w BETWEEN 10 AND 20)
|
|
}
|
|
} {}
|
|
do_test where2-8.14 {
|
|
execsql {
|
|
SELECT w FROM tx
|
|
WHERE x IN (SELECT x FROM t1 WHERE w BETWEEN -4 AND -2)
|
|
AND y IN (SELECT y FROM t1 WHERE w BETWEEN 10 AND 20)
|
|
AND z IN (SELECT z FROM t1 WHERE w BETWEEN 10 AND 20)
|
|
}
|
|
} {}
|
|
do_test where2-8.15 {
|
|
execsql {
|
|
SELECT w FROM tx
|
|
WHERE x IN (SELECT x FROM t1 WHERE w BETWEEN 10 AND 20)
|
|
AND y IN (SELECT y FROM t1 WHERE w BETWEEN 10 AND 20)
|
|
AND z IN (SELECT z FROM t1 WHERE w BETWEEN 200 AND 300)
|
|
}
|
|
} {}
|
|
do_test where2-8.16 {
|
|
execsql {
|
|
SELECT w FROM tx
|
|
WHERE x IN (SELECT x FROM t1 WHERE w BETWEEN 10 AND 20)
|
|
AND y IN (SELECT y FROM t1 WHERE w BETWEEN 200 AND 300)
|
|
AND z IN (SELECT z FROM t1 WHERE w BETWEEN 10 AND 20)
|
|
}
|
|
} {}
|
|
do_test where2-8.17 {
|
|
execsql {
|
|
SELECT w FROM tx
|
|
WHERE x IN (SELECT x FROM t1 WHERE w BETWEEN 200 AND 300)
|
|
AND y IN (SELECT y FROM t1 WHERE w BETWEEN 10 AND 20)
|
|
AND z IN (SELECT z FROM t1 WHERE w BETWEEN 10 AND 20)
|
|
}
|
|
} {}
|
|
do_test where2-8.18 {
|
|
execsql {
|
|
SELECT w FROM tx
|
|
WHERE x IN (SELECT x FROM t1 WHERE +w BETWEEN 10 AND 20)
|
|
AND y IN (SELECT y FROM t1 WHERE +w BETWEEN 10 AND 20)
|
|
AND z IN (SELECT z FROM t1 WHERE +w BETWEEN 200 AND 300)
|
|
}
|
|
} {}
|
|
do_test where2-8.19 {
|
|
execsql {
|
|
SELECT w FROM tx
|
|
WHERE x IN (SELECT x FROM t1 WHERE +w BETWEEN 10 AND 20)
|
|
AND y IN (SELECT y FROM t1 WHERE +w BETWEEN 200 AND 300)
|
|
AND z IN (SELECT z FROM t1 WHERE +w BETWEEN 10 AND 20)
|
|
}
|
|
} {}
|
|
do_test where2-8.20 {
|
|
execsql {
|
|
SELECT w FROM tx
|
|
WHERE x IN (SELECT x FROM t1 WHERE +w BETWEEN 200 AND 300)
|
|
AND y IN (SELECT y FROM t1 WHERE +w BETWEEN 10 AND 20)
|
|
AND z IN (SELECT z FROM t1 WHERE +w BETWEEN 10 AND 20)
|
|
}
|
|
} {}
|
|
}
|
|
|
|
# Make sure WHERE clauses of the form A=1 AND (B=2 OR B=3) are optimized
|
|
# when we have an index on A and B.
|
|
#
|
|
ifcapable or_opt&&tclvar {
|
|
do_test where2-9.1 {
|
|
execsql {
|
|
BEGIN;
|
|
CREATE TABLE t10(a,b,c);
|
|
INSERT INTO t10 VALUES(1,1,1);
|
|
INSERT INTO t10 VALUES(1,2,2);
|
|
INSERT INTO t10 VALUES(1,3,3);
|
|
}
|
|
for {set i 4} {$i<=1000} {incr i} {
|
|
execsql {INSERT INTO t10 VALUES(1,$i,$i)}
|
|
}
|
|
execsql {
|
|
CREATE INDEX i10 ON t10(a,b);
|
|
COMMIT;
|
|
SELECT count(*) FROM t10;
|
|
}
|
|
} 1000
|
|
ifcapable subquery {
|
|
do_test where2-9.2 {
|
|
count {
|
|
SELECT * FROM t10 WHERE a=1 AND (b=2 OR b=3)
|
|
}
|
|
} {1 2 2 1 3 3 7}
|
|
}
|
|
}
|
|
|
|
# Indices with redundant columns
|
|
#
|
|
do_test where2-11.1 {
|
|
execsql {
|
|
CREATE TABLE t11(a,b,c,d);
|
|
CREATE INDEX i11aba ON t11(a,b,a,c); -- column A occurs twice.
|
|
INSERT INTO t11 VALUES(1,2,3,4);
|
|
INSERT INTO t11 VALUES(5,6,7,8);
|
|
INSERT INTO t11 VALUES(1,2,9,10);
|
|
INSERT INTO t11 VALUES(5,11,12,13);
|
|
SELECT c FROM t11 WHERE a=1 AND b=2 ORDER BY c;
|
|
}
|
|
} {3 9}
|
|
do_test where2-11.2 {
|
|
execsql {
|
|
CREATE INDEX i11cccccccc ON t11(c,c,c,c,c,c,c,c); -- repeated column
|
|
SELECT d FROM t11 WHERE c=9;
|
|
}
|
|
} {10}
|
|
do_test where2-11.3 {
|
|
execsql {
|
|
SELECT d FROM t11 WHERE c IN (1,2,3,4,5);
|
|
}
|
|
} {4}
|
|
do_test where2-11.4 {
|
|
execsql {
|
|
SELECT d FROM t11 WHERE c=7 OR (a=1 AND b=2) ORDER BY d;
|
|
}
|
|
} {4 8 10}
|
|
|
|
# Verify that the OR clause is used in an outer loop even when
|
|
# the OR clause scores slightly better on an inner loop.
|
|
if {[permutation] != "no_optimization"} {
|
|
do_execsql_test where2-12.1 {
|
|
CREATE TABLE t12(x INTEGER PRIMARY KEY, y INT, z CHAR(100));
|
|
CREATE INDEX t12y ON t12(y);
|
|
EXPLAIN QUERY PLAN
|
|
SELECT a.x, b.x
|
|
FROM t12 AS a JOIN t12 AS b ON a.y=b.x
|
|
WHERE (b.x=$abc OR b.y=$abc);
|
|
} {/.*SEARCH TABLE t12 AS b .*SEARCH TABLE t12 AS b .*/}
|
|
}
|
|
|
|
|
|
finish_test
|