124 lines
3.4 KiB
Plaintext
124 lines
3.4 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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# when the WHERE clause contains the BETWEEN operator.
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#
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# $Id: between.test,v 1.2 2006/01/17 09:35:02 danielk1977 Exp $
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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# Build some test data
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#
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do_test between-1.0 {
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execsql {
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BEGIN;
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CREATE TABLE t1(w int, x int, y int, z int);
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}
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for {set i 1} {$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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# Random unplanned test of the $varname variable syntax.
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execsql {INSERT INTO t1 VALUES($::w,$::x,$::y,$::z)}
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} else {
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# If the $varname syntax is not available, use the regular variable
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# declaration syntax.
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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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# This procedure executes the SQL. Then it appends to the result the
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# "sort" or "nosort" keyword depending on whether or not any sorting
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# is done. Then it appends the names 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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do_test between-1.1.1 {
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queryplan {
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SELECT * FROM t1 WHERE w BETWEEN 5 AND 6 ORDER BY +w
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}
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} {5 2 36 38 6 2 49 51 sort t1 i1w}
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do_test between-1.1.2 {
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queryplan {
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SELECT * FROM t1 WHERE +w BETWEEN 5 AND 6 ORDER BY +w
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}
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} {5 2 36 38 6 2 49 51 sort t1 *}
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do_test between-1.2.1 {
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queryplan {
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SELECT * FROM t1 WHERE w BETWEEN 5 AND 65-y ORDER BY +w
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}
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} {5 2 36 38 6 2 49 51 sort t1 i1w}
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do_test between-1.2.2 {
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queryplan {
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SELECT * FROM t1 WHERE +w BETWEEN 5 AND 65-y ORDER BY +w
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}
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} {5 2 36 38 6 2 49 51 sort t1 *}
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do_test between-1.3.1 {
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queryplan {
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SELECT * FROM t1 WHERE w BETWEEN 41-y AND 6 ORDER BY +w
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}
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} {5 2 36 38 6 2 49 51 sort t1 i1w}
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do_test between-1.3.2 {
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queryplan {
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SELECT * FROM t1 WHERE +w BETWEEN 41-y AND 6 ORDER BY +w
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}
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} {5 2 36 38 6 2 49 51 sort t1 *}
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do_test between-1.4 {
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queryplan {
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SELECT * FROM t1 WHERE w BETWEEN 41-y AND 65-y ORDER BY +w
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}
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} {5 2 36 38 6 2 49 51 sort t1 *}
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do_test between-1.5.1 {
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queryplan {
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SELECT * FROM t1 WHERE 26 BETWEEN y AND z ORDER BY +w
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}
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} {4 2 25 27 sort t1 i1zyx}
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do_test between-1.5.2 {
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queryplan {
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SELECT * FROM t1 WHERE 26 BETWEEN +y AND z ORDER BY +w
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}
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} {4 2 25 27 sort t1 i1zyx}
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do_test between-1.5.3 {
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queryplan {
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SELECT * FROM t1 WHERE 26 BETWEEN y AND +z ORDER BY +w
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}
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} {4 2 25 27 sort t1 *}
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finish_test
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