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 aggregate functions and the13# GROUP BY and HAVING clauses of SELECT statements.14#15 16set testdir [file dirname $argv0]17source $testdir/tester.tcl18 19# Build some test data20#21execsql {22  CREATE TABLE t1(x int, y int);23  BEGIN;24}25for {set i 1} {$i<32} {incr i} {26  for {set j 0} {(1<<$j)<$i} {incr j} {}27  execsql "INSERT INTO t1 VALUES([expr {32-$i}],[expr {10-$j}])"28}29execsql {30  COMMIT31}32 33do_test select5-1.0 {34  execsql {SELECT DISTINCT y FROM t1 ORDER BY y}35} {5 6 7 8 9 10}36 37# Sort by an aggregate function.38#39do_test select5-1.1 {40  execsql {SELECT y, count(*) FROM t1 GROUP BY y ORDER BY y}41} {5 15 6 8 7 4 8 2 9 1 10 1}42do_test select5-1.2 {43  execsql {SELECT y, count(*) FROM t1 GROUP BY y ORDER BY count(*), y}44} {9 1 10 1 8 2 7 4 6 8 5 15}45do_test select5-1.3 {46  execsql {SELECT count(*), y FROM t1 GROUP BY y ORDER BY count(*), y}47} {1 9 1 10 2 8 4 7 8 6 15 5}48 49# Some error messages associated with aggregates and GROUP BY50#51do_test select5-2.1.1 {52  catchsql {53    SELECT y, count(*) FROM t1 GROUP BY z ORDER BY y54  }55} {1 {no such column: z}}56do_test select5-2.1.2 {57  catchsql {58    SELECT y, count(*) FROM t1 GROUP BY temp.t1.y ORDER BY y59  }60} {1 {no such column: temp.t1.y}}61do_test select5-2.2 {62  set v [catch {execsql {63    SELECT y, count(*) FROM t1 GROUP BY z(y) ORDER BY y64  }} msg]65  lappend v $msg66} {1 {no such function: z}}67do_test select5-2.3 {68  set v [catch {execsql {69    SELECT y, count(*) FROM t1 GROUP BY y HAVING count(*)<3 ORDER BY y70  }} msg]71  lappend v $msg72} {0 {8 2 9 1 10 1}}73do_test select5-2.4 {74  set v [catch {execsql {75    SELECT y, count(*) FROM t1 GROUP BY y HAVING z(y)<3 ORDER BY y76  }} msg]77  lappend v $msg78} {1 {no such function: z}}79do_test select5-2.5 {80  set v [catch {execsql {81    SELECT y, count(*) FROM t1 GROUP BY y HAVING count(*)<z ORDER BY y82  }} msg]83  lappend v $msg84} {1 {no such column: z}}85 86# Get the Agg function to rehash in vdbe.c87#88do_test select5-3.1 {89  execsql {90    SELECT x, count(*), avg(y) FROM t1 GROUP BY x HAVING x<4 ORDER BY x91  }92} {1 1 5.0 2 1 5.0 3 1 5.0}93 94# Run various aggregate functions when the count is zero.95#96do_test select5-4.1 {97  execsql {98    SELECT avg(x) FROM t1 WHERE x>10099  }100} {{}}101do_test select5-4.2 {102  execsql {103    SELECT count(x) FROM t1 WHERE x>100104  }105} {0}106do_test select5-4.3 {107  execsql {108    SELECT min(x) FROM t1 WHERE x>100109  }110} {{}}111do_test select5-4.4 {112  execsql {113    SELECT max(x) FROM t1 WHERE x>100114  }115} {{}}116do_test select5-4.5 {117  execsql {118    SELECT sum(x) FROM t1 WHERE x>100119  }120} {{}}121 122# Some tests for queries with a GROUP BY clause but no aggregate functions.123#124# Note: The query in test cases 5.1 through 5.5 are not legal SQL. So if the 125# implementation changes in the future and it returns different results,126# this is not such a big deal.127#128do_test select5-5.1 {129  execsql {130    CREATE TABLE t2(a, b, c);131    INSERT INTO t2 VALUES(1, 2, 3);132    INSERT INTO t2 VALUES(1, 4, 5);133    INSERT INTO t2 VALUES(6, 4, 7);134    CREATE INDEX t2_idx ON t2(a);135  } 136} {}137do_test select5-5.2 {138  execsql {139    SELECT a FROM t2 GROUP BY a;140  } 141} {1 6}142do_test select5-5.3 {143  execsql {144    SELECT a FROM t2 WHERE a>2 GROUP BY a;145  } 146} {6}147do_test select5-5.4 {148  execsql {149    SELECT a, b FROM t2 GROUP BY a, b;150  } 151} {1 2 1 4 6 4}152do_test select5-5.5 {153  execsql {154    SELECT a, b FROM t2 GROUP BY a;155  } 156} {1 2 6 4}157 158# Test rendering of columns for the GROUP BY clause.159#160do_test select5-5.11 {161  execsql {162    SELECT max(c), b*a, b, a FROM t2 GROUP BY b*a, b, a163  }164} {3 2 2 1 5 4 4 1 7 24 4 6}165 166# NULL compare equal to each other for the purposes of processing167# the GROUP BY clause.168#169do_test select5-6.1 {170  execsql {171    CREATE TABLE t3(x,y);172    INSERT INTO t3 VALUES(1,NULL);173    INSERT INTO t3 VALUES(2,NULL);174    INSERT INTO t3 VALUES(3,4);175    SELECT count(x), y FROM t3 GROUP BY y ORDER BY 1176  }177} {1 4 2 {}}178do_test select5-6.2 {179  execsql {180    CREATE TABLE t4(x,y,z);181    INSERT INTO t4 VALUES(1,2,NULL);182    INSERT INTO t4 VALUES(2,3,NULL);183    INSERT INTO t4 VALUES(3,NULL,5);184    INSERT INTO t4 VALUES(4,NULL,6);185    INSERT INTO t4 VALUES(4,NULL,6);186    INSERT INTO t4 VALUES(5,NULL,NULL);187    INSERT INTO t4 VALUES(5,NULL,NULL);188    INSERT INTO t4 VALUES(6,7,8);189    SELECT max(x), count(x), y, z FROM t4 GROUP BY y, z ORDER BY 1190  }191} {1 1 2 {} 2 1 3 {} 3 1 {} 5 4 2 {} 6 5 2 {} {} 6 1 7 8}192 193do_test select5-7.2 {194  execsql {195    SELECT count(*), count(x) as cnt FROM t4 GROUP BY y ORDER BY cnt;196  }197} {1 1 1 1 1 1 5 5}198 199# See ticket #3324.200#201do_test select5-8.1 {202  execsql {203    CREATE TABLE t8a(a,b);204    CREATE TABLE t8b(x);205    INSERT INTO t8a VALUES('one', 1);206    INSERT INTO t8a VALUES('one', 2);207    INSERT INTO t8a VALUES('two', 3);208    INSERT INTO t8a VALUES('one', NULL);209    INSERT INTO t8b(rowid,x) VALUES(1,111);210    INSERT INTO t8b(rowid,x) VALUES(2,222);211    INSERT INTO t8b(rowid,x) VALUES(3,333);212    SELECT a, count(b) FROM t8a, t8b WHERE b=t8b.rowid GROUP BY a ORDER BY a;213  }214} {one 2 two 1}215do_test select5-8.2 {216  execsql {217    SELECT a, count(b) FROM t8a, t8b WHERE b=+t8b.rowid GROUP BY a ORDER BY a;218  }219} {one 2 two 1}220do_test select5-8.3 {221  execsql {222    SELECT t8a.a, count(t8a.b) FROM t8a, t8b WHERE t8a.b=t8b.rowid223     GROUP BY 1 ORDER BY 1;224  }225} {one 2 two 1}226do_test select5-8.4 {227  execsql {228    SELECT a, count(*) FROM t8a, t8b WHERE b=+t8b.rowid GROUP BY a ORDER BY a;229  }230} {one 2 two 1}231do_test select5-8.5 {232  execsql {233    SELECT a, count(b) FROM t8a, t8b WHERE b<x GROUP BY a ORDER BY a;234  }235} {one 6 two 3}236do_test select5-8.6 {237  execsql {238    SELECT a, count(t8a.b) FROM t8a, t8b WHERE b=t8b.rowid 239     GROUP BY a ORDER BY 2;240  }241} {two 1 one 2}242do_test select5-8.7 {243  execsql {244    SELECT a, count(b) FROM t8a, t8b GROUP BY a ORDER BY 2;245  }246} {two 3 one 6}247do_test select5-8.8 {248  execsql {249    SELECT a, count(*) FROM t8a, t8b GROUP BY a ORDER BY 2;250  }251} {two 3 one 9}252 253# 2021-04-26 forum https://sqlite.org/forum/forumpost/74330094d8254reset_db255do_execsql_test select5-9.1 {256  CREATE TABLE t1(a INT, b INT);257  INSERT INTO t1(a,b) VALUES(1,null),(null,null),(1,null);258  CREATE UNIQUE INDEX t1b ON t1(abs(b));259  SELECT quote(a), quote(b), '|' FROM t1 GROUP BY a, abs(b);260} {NULL NULL | 1 NULL |}261 262finish_test263