sl@0: # 2001 September 15
sl@0: #
sl@0: # Portions Copyright (c) 2007-2008 Nokia Corporation and/or its subsidiaries. All rights reserved.
sl@0: #
sl@0: # The author disclaims copyright to this source code.  In place of
sl@0: # a legal notice, here is a blessing:
sl@0: #
sl@0: #    May you do good and not evil.
sl@0: #    May you find forgiveness for yourself and forgive others.
sl@0: #    May you share freely, never taking more than you give.
sl@0: #
sl@0: #***********************************************************************
sl@0: # This file implements regression tests for SQLite library.  The
sl@0: # focus of this file is testing the SELECT statement.
sl@0: #
sl@0: # $Id: select2.test,v 1.27 2008/07/12 14:52:20 drh Exp $
sl@0: 
sl@0: set testdir [file dirname $argv0]
sl@0: source $testdir/tester.tcl
sl@0: 
sl@0: # Create a table with some data
sl@0: #
sl@0: execsql {CREATE TABLE tbl1(f1 int, f2 int)}
sl@0: execsql {BEGIN}
sl@0: for {set i 0} {$i<=30} {incr i} {
sl@0:   execsql "INSERT INTO tbl1 VALUES([expr {$i%9}],[expr {$i%10}])"
sl@0: }
sl@0: execsql {COMMIT}
sl@0: 
sl@0: # Do a second query inside a first.
sl@0: #
sl@0: do_test select2-1.1 {
sl@0:   set sql {SELECT DISTINCT f1 FROM tbl1 ORDER BY f1}
sl@0:   set r {}
sl@0:   catch {unset data}
sl@0:   db eval $sql data {
sl@0:     set f1 $data(f1)
sl@0:     lappend r $f1:
sl@0:     set sql2 "SELECT f2 FROM tbl1 WHERE f1=$f1 ORDER BY f2"
sl@0:     db eval $sql2 d2 {
sl@0:       lappend r $d2(f2)
sl@0:     }
sl@0:   }
sl@0:   set r
sl@0: } {0: 0 7 8 9 1: 0 1 8 9 2: 0 1 2 9 3: 0 1 2 3 4: 2 3 4 5: 3 4 5 6: 4 5 6 7: 5 6 7 8: 6 7 8}
sl@0: 
sl@0: do_test select2-1.2 {
sl@0:   set sql {SELECT DISTINCT f1 FROM tbl1 WHERE f1>3 AND f1<5}
sl@0:   set r {}
sl@0:   db eval $sql data {
sl@0:     set f1 $data(f1)
sl@0:     lappend r $f1:
sl@0:     set sql2 "SELECT f2 FROM tbl1 WHERE f1=$f1 ORDER BY f2"
sl@0:     db eval $sql2 d2 {
sl@0:       lappend r $d2(f2)
sl@0:     }
sl@0:   }
sl@0:   set r
sl@0: } {4: 2 3 4}
sl@0: unset data
sl@0: 
sl@0: # Create a largish table. Do this twice, once using the TCL cache and once
sl@0: # without.  Compare the performance to make sure things go faster with the
sl@0: # cache turned on.
sl@0: #
sl@0: ifcapable tclvar {
sl@0:   do_test select2-2.0.1 {
sl@0:     set t1 [time {
sl@0:       execsql {CREATE TABLE tbl2(f1 int, f2 int, f3 int); BEGIN;}
sl@0:       for {set i 1} {$i<=30000} {incr i} {
sl@0:         set i2 [expr {$i*2}]
sl@0:         set i3 [expr {$i*3}]
sl@0:         db eval {INSERT INTO tbl2 VALUES($i,$i2,$i3)}
sl@0:       }
sl@0:       execsql {COMMIT}
sl@0:     }]
sl@0:     list
sl@0:   } {}
sl@0:   puts "time with cache: $::t1"
sl@0: }
sl@0: catch {execsql {DROP TABLE tbl2}}
sl@0: do_test select2-2.0.2 {
sl@0:   set t2 [time {
sl@0:     execsql {CREATE TABLE tbl2(f1 int, f2 int, f3 int); BEGIN;}
sl@0:     for {set i 1} {$i<=30000} {incr i} {
sl@0:       set i2 [expr {$i*2}]
sl@0:       set i3 [expr {$i*3}]
sl@0:       execsql "INSERT INTO tbl2 VALUES($i,$i2,$i3)"
sl@0:     }
sl@0:     execsql {COMMIT}
sl@0:   }]
sl@0:   list
sl@0: } {}
sl@0: puts "time without cache: $t2"
sl@0: #Symbian OS: This is a tclsqlite3.exe test. We do not use the TCL cache.
sl@0: if {$::tcl_platform(platform)!="symbian"} {
sl@0:   ifcapable tclvar {
sl@0:     do_test select2-2.0.3 {
sl@0:       expr {[lindex $t1 0]<[lindex $t2 0]}
sl@0:     } 1
sl@0:   }
sl@0: }
sl@0: 
sl@0: do_test select2-2.1 {
sl@0:   execsql {SELECT count(*) FROM tbl2}
sl@0: } {30000}
sl@0: do_test select2-2.2 {
sl@0:   execsql {SELECT count(*) FROM tbl2 WHERE f2>1000}
sl@0: } {29500}
sl@0: 
sl@0: do_test select2-3.1 {
sl@0:   execsql {SELECT f1 FROM tbl2 WHERE 1000=f2}
sl@0: } {500}
sl@0: 
sl@0: do_test select2-3.2a {
sl@0:   execsql {CREATE INDEX idx1 ON tbl2(f2)}
sl@0: } {}
sl@0: do_test select2-3.2b {
sl@0:   execsql {SELECT f1 FROM tbl2 WHERE 1000=f2}
sl@0: } {500}
sl@0: do_test select2-3.2c {
sl@0:   execsql {SELECT f1 FROM tbl2 WHERE f2=1000}
sl@0: } {500}
sl@0: do_test select2-3.2d {
sl@0:   set sqlite_search_count 0
sl@0:   execsql {SELECT * FROM tbl2 WHERE 1000=f2}
sl@0:   set sqlite_search_count
sl@0: } {3}
sl@0: do_test select2-3.2e {
sl@0:   set sqlite_search_count 0
sl@0:   execsql {SELECT * FROM tbl2 WHERE f2=1000}
sl@0:   set sqlite_search_count
sl@0: } {3}
sl@0: 
sl@0: # Make sure queries run faster with an index than without
sl@0: #
sl@0: do_test select2-3.3 {
sl@0:   execsql {DROP INDEX idx1}
sl@0:   set sqlite_search_count 0
sl@0:   execsql {SELECT f1 FROM tbl2 WHERE f2==2000}
sl@0:   set sqlite_search_count
sl@0: } {29999}
sl@0: 
sl@0: # Make sure we can optimize functions in the WHERE clause that
sl@0: # use fields from two or more different table.  (Bug #6)
sl@0: #
sl@0: do_test select2-4.1 {
sl@0:   execsql {
sl@0:     CREATE TABLE aa(a);
sl@0:     CREATE TABLE bb(b);
sl@0:     INSERT INTO aa VALUES(1);
sl@0:     INSERT INTO aa VALUES(3);
sl@0:     INSERT INTO bb VALUES(2);
sl@0:     INSERT INTO bb VALUES(4);
sl@0:     SELECT * FROM aa, bb WHERE max(a,b)>2;
sl@0:   }
sl@0: } {1 4 3 2 3 4}
sl@0: do_test select2-4.2 {
sl@0:   execsql {
sl@0:     INSERT INTO bb VALUES(0);
sl@0:     SELECT * FROM aa, bb WHERE b;
sl@0:   }
sl@0: } {1 2 1 4 3 2 3 4}
sl@0: do_test select2-4.3 {
sl@0:   execsql {
sl@0:     SELECT * FROM aa, bb WHERE NOT b;
sl@0:   }
sl@0: } {1 0 3 0}
sl@0: do_test select2-4.4 {
sl@0:   execsql {
sl@0:     SELECT * FROM aa, bb WHERE min(a,b);
sl@0:   }
sl@0: } {1 2 1 4 3 2 3 4}
sl@0: do_test select2-4.5 {
sl@0:   execsql {
sl@0:     SELECT * FROM aa, bb WHERE NOT min(a,b);
sl@0:   }
sl@0: } {1 0 3 0}
sl@0: do_test select2-4.6 {
sl@0:   execsql {
sl@0:     SELECT * FROM aa, bb WHERE CASE WHEN a=b-1 THEN 1 END;
sl@0:   }
sl@0: } {1 2 3 4}
sl@0: do_test select2-4.7 {
sl@0:   execsql {
sl@0:     SELECT * FROM aa, bb WHERE CASE WHEN a=b-1 THEN 0 ELSE 1 END;
sl@0:   }
sl@0: } {1 4 1 0 3 2 3 0}
sl@0: 
sl@0: finish_test