# 2005 July 28 # # The author disclaims copyright to this source code. In place of # a legal notice, here is a blessing: # # May you do good and not evil. # May you find forgiveness for yourself and forgive others. # May you share freely, never taking more than you give. # #*********************************************************************** # This file implements regression tests for SQLite library. The # focus of this file is testing the use of indices in WHERE clauses # when the WHERE clause contains the BETWEEN operator. # # $Id: between.test,v 1.2 2006/01/17 09:35:02 danielk1977 Exp $ set testdir [file dirname $argv0] source $testdir/tester.tcl # Build some test data # do_test between-1.0 { execsql { BEGIN; CREATE TABLE t1(w int, x int, y int, z int); } for {set i 1} {$i<=100} {incr i} { set w $i set x [expr {int(log($i)/log(2))}] set y [expr {$i*$i + 2*$i + 1}] set z [expr {$x+$y}] ifcapable tclvar { # Random unplanned test of the $varname variable syntax. execsql {INSERT INTO t1 VALUES($::w,$::x,$::y,$::z)} } else { # If the $varname syntax is not available, use the regular variable # declaration syntax. execsql {INSERT INTO t1 VALUES(:w,:x,:y,:z)} } } execsql { CREATE UNIQUE INDEX i1w ON t1(w); CREATE INDEX i1xy ON t1(x,y); CREATE INDEX i1zyx ON t1(z,y,x); COMMIT; } } {} # This procedure executes the SQL. Then it appends to the result the # "sort" or "nosort" keyword depending on whether or not any sorting # is done. Then it appends the names of the table and index used. # proc queryplan {sql} { set ::sqlite_sort_count 0 set data [execsql $sql] if {$::sqlite_sort_count} {set x sort} {set x nosort} lappend data $x set eqp [execsql "EXPLAIN QUERY PLAN $sql"] # puts eqp=$eqp foreach {a b c x} $eqp { if {[regexp { TABLE (\w+ AS )?(\w+) USING.* INDEX (\w+)\y} \ $x all as tab idx]} { lappend data $tab $idx } elseif {[regexp { TABLE (\w+ AS )?(\w+)\y} $x all as tab]} { lappend data $tab * } } return $data } do_test between-1.1.1 { queryplan { SELECT * FROM t1 WHERE w BETWEEN 5 AND 6 ORDER BY +w } } {5 2 36 38 6 2 49 51 sort t1 i1w} do_test between-1.1.2 { queryplan { SELECT * FROM t1 WHERE +w BETWEEN 5 AND 6 ORDER BY +w } } {5 2 36 38 6 2 49 51 sort t1 *} do_test between-1.2.1 { queryplan { SELECT * FROM t1 WHERE w BETWEEN 5 AND 65-y ORDER BY +w } } {5 2 36 38 6 2 49 51 sort t1 i1w} do_test between-1.2.2 { queryplan { SELECT * FROM t1 WHERE +w BETWEEN 5 AND 65-y ORDER BY +w } } {5 2 36 38 6 2 49 51 sort t1 *} do_test between-1.3.1 { queryplan { SELECT * FROM t1 WHERE w BETWEEN 41-y AND 6 ORDER BY +w } } {5 2 36 38 6 2 49 51 sort t1 i1w} do_test between-1.3.2 { queryplan { SELECT * FROM t1 WHERE +w BETWEEN 41-y AND 6 ORDER BY +w } } {5 2 36 38 6 2 49 51 sort t1 *} do_test between-1.4 { queryplan { SELECT * FROM t1 WHERE w BETWEEN 41-y AND 65-y ORDER BY +w } } {5 2 36 38 6 2 49 51 sort t1 *} do_test between-1.5.1 { queryplan { SELECT * FROM t1 WHERE 26 BETWEEN y AND z ORDER BY +w } } {4 2 25 27 sort t1 i1zyx} do_test between-1.5.2 { queryplan { SELECT * FROM t1 WHERE 26 BETWEEN +y AND z ORDER BY +w } } {4 2 25 27 sort t1 i1zyx} do_test between-1.5.3 { queryplan { SELECT * FROM t1 WHERE 26 BETWEEN y AND +z ORDER BY +w } } {4 2 25 27 sort t1 *} #------------------------------------------------------------------------- reset_db do_execsql_test between-2.0 { CREATE TABLE t1(x TEXT, y TEXT COLLATE nocase); INSERT INTO t1 VALUES('0', 'abc'); } foreach {tn expr res} { 1 "x BETWEEN 1 AND '5'" 0 2 "x COLLATE binary BETWEEN 1 AND '5'" 0 3 "x COLLATE nocase BETWEEN 1 AND '5'" 0 4 "y BETWEEN 'A' AND 'B'" 1 5 "y COLLATE nocase BETWEEN 'A' AND 'B'" 1 6 "y COLLATE binary BETWEEN 'A' AND 'B'" 0 7 "(y COLLATE binary) BETWEEN 'A' AND 'B'" 0 } { set sql "SELECT $expr FROM t1" do_execsql_test between-2.1.$tn $sql $res } finish_test