AryaWu/sqlite

1# 2001 September 152#3# The author disclaims copyright to this source code.  In place of4# a legal notice, here is a blessing:5#6#    May you do good and not evil.7#    May you find forgiveness for yourself and forgive others.8#    May you share freely, never taking more than you give.9#10#***********************************************************************11# This file implements regression tests for SQLite library.  The12# focus of this file is testing the SELECT statement.13#14# $Id: select2.test,v 1.28 2009/01/15 15:23:59 drh Exp $15 16set testdir [file dirname $argv0]17source $testdir/tester.tcl18 19# Create a table with some data20#21execsql {CREATE TABLE tbl1(f1 int, f2 int)}22execsql {BEGIN}23for {set i 0} {$i<=30} {incr i} {24  execsql "INSERT INTO tbl1 VALUES([expr {$i%9}],[expr {$i%10}])"25}26execsql {COMMIT}27 28# Do a second query inside a first.29#30do_test select2-1.1 {31  set sql {SELECT DISTINCT f1 FROM tbl1 ORDER BY f1}32  set r {}33  catch {unset data}34  db eval $sql data {35    set f1 $data(f1)36    lappend r $f1:37    set sql2 "SELECT f2 FROM tbl1 WHERE f1=$f1 ORDER BY f2"38    db eval $sql2 d2 {39      lappend r $d2(f2)40    }41  }42  set r43} {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}44 45do_test select2-1.2 {46  set sql {SELECT DISTINCT f1 FROM tbl1 WHERE f1>3 AND f1<5}47  set r {}48  db eval $sql data {49    set f1 $data(f1)50    lappend r $f1:51    set sql2 "SELECT f2 FROM tbl1 WHERE f1=$f1 ORDER BY f2"52    db eval $sql2 d2 {53      lappend r $d2(f2)54    }55  }56  set r57} {4: 2 3 4}58unset data59 60# Create a largish table. Do this twice, once using the TCL cache and once61# without.  Compare the performance to make sure things go faster with the62# cache turned on.63#64ifcapable tclvar {65  do_test select2-2.0.1 {66    set t1 [time {67      execsql {CREATE TABLE tbl2(f1 int, f2 int, f3 int); BEGIN;}68      for {set i 1} {$i<=30000} {incr i} {69        set i2 [expr {$i*2}]70        set i3 [expr {$i*3}]71        db eval {INSERT INTO tbl2 VALUES($i,$i2,$i3)}72      }73      execsql {COMMIT}74    }]75    list76  } {}77  puts "time with cache: $::t1"78}79catch {execsql {DROP TABLE tbl2}}80do_test select2-2.0.2 {81  set t2 [time {82    execsql {CREATE TABLE tbl2(f1 int, f2 int, f3 int); BEGIN;}83    for {set i 1} {$i<=30000} {incr i} {84      set i2 [expr {$i*2}]85      set i3 [expr {$i*3}]86      execsql "INSERT INTO tbl2 VALUES($i,$i2,$i3)"87    }88    execsql {COMMIT}89  }]90  list91} {}92puts "time without cache: $t2"93#ifcapable tclvar {94#  do_test select2-2.0.3 {95#    expr {[lindex $t1 0]<[lindex $t2 0]}96#  } 197#}98 99do_test select2-2.1 {100  execsql {SELECT count(*) FROM tbl2}101} {30000}102do_test select2-2.2 {103  execsql {SELECT count(*) FROM tbl2 WHERE f2>1000}104} {29500}105 106do_test select2-3.1 {107  execsql {SELECT f1 FROM tbl2 WHERE 1000=f2}108} {500}109 110do_test select2-3.2a {111  execsql {CREATE INDEX idx1 ON tbl2(f2)}112} {}113do_test select2-3.2b {114  execsql {SELECT f1 FROM tbl2 WHERE 1000=f2}115} {500}116do_test select2-3.2c {117  execsql {SELECT f1 FROM tbl2 WHERE f2=1000}118} {500}119do_test select2-3.2d {120  set sqlite_search_count 0121  execsql {SELECT * FROM tbl2 WHERE 1000=f2}122  set sqlite_search_count123} {3}124do_test select2-3.2e {125  set sqlite_search_count 0126  execsql {SELECT * FROM tbl2 WHERE f2=1000}127  set sqlite_search_count128} {3}129 130# Make sure queries run faster with an index than without131#132do_test select2-3.3 {133  execsql {DROP INDEX idx1}134  set sqlite_search_count 0135  execsql {SELECT f1 FROM tbl2 WHERE f2==2000}136  set sqlite_search_count137} {29999}138 139# Make sure we can optimize functions in the WHERE clause that140# use fields from two or more different table.  (Bug #6)141#142do_test select2-4.1 {143  execsql {144    CREATE TABLE aa(a);145    CREATE TABLE bb(b);146    INSERT INTO aa VALUES(1);147    INSERT INTO aa VALUES(3);148    INSERT INTO bb VALUES(2);149    INSERT INTO bb VALUES(4);150    SELECT * FROM aa, bb WHERE max(a,b)>2;151  }152} {1 4 3 2 3 4}153do_test select2-4.2 {154  execsql {155    INSERT INTO bb VALUES(0);156    SELECT * FROM aa CROSS JOIN bb WHERE b;157  }158} {1 2 1 4 3 2 3 4}159do_test select2-4.3 {160  execsql {161    SELECT * FROM aa CROSS JOIN bb WHERE NOT b;162  }163} {1 0 3 0}164do_test select2-4.4 {165  execsql {166    SELECT * FROM aa, bb WHERE min(a,b);167  }168} {1 2 1 4 3 2 3 4}169do_test select2-4.5 {170  execsql {171    SELECT * FROM aa, bb WHERE NOT min(a,b);172  }173} {1 0 3 0}174do_test select2-4.6 {175  execsql {176    SELECT * FROM aa, bb WHERE CASE WHEN a=b-1 THEN 1 END;177  }178} {1 2 3 4}179do_test select2-4.7 {180  execsql {181    SELECT * FROM aa, bb WHERE CASE WHEN a=b-1 THEN 0 ELSE 1 END;182  }183} {1 4 1 0 3 2 3 0}184 185finish_test186