| # 2005 September 11 |
| # |
| # 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 script is the DISTINCT modifier on aggregate functions. |
| # |
| # $Id: distinctagg.test,v 1.3 2009/02/09 13:19:28 drh Exp $ |
| |
| |
| set testdir [file dirname $argv0] |
| source $testdir/tester.tcl |
| set testprefix distinctagg |
| |
| do_test distinctagg-1.1 { |
| execsql { |
| CREATE TABLE t1(a,b,c); |
| INSERT INTO t1 VALUES(1,2,3); |
| INSERT INTO t1 VALUES(1,3,4); |
| INSERT INTO t1 VALUES(1,3,5); |
| SELECT count(distinct a), |
| count(distinct b), |
| count(distinct c), |
| count(all a) FROM t1; |
| } |
| } {1 2 3 3} |
| do_test distinctagg-1.2 { |
| execsql { |
| SELECT b, count(distinct c) FROM t1 GROUP BY b |
| } |
| } {2 1 3 2} |
| do_test distinctagg-1.3 { |
| execsql { |
| INSERT INTO t1 SELECT a+1, b+3, c+5 FROM t1; |
| INSERT INTO t1 SELECT a+2, b+6, c+10 FROM t1; |
| INSERT INTO t1 SELECT a+4, b+12, c+20 FROM t1; |
| SELECT count(*), count(distinct a), count(distinct b) FROM t1 |
| } |
| } {24 8 16} |
| do_test distinctagg-1.4 { |
| execsql { |
| SELECT a, count(distinct c) FROM t1 GROUP BY a ORDER BY a |
| } |
| } {1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 3} |
| |
| do_test distinctagg-2.1 { |
| catchsql { |
| SELECT count(distinct) FROM t1; |
| } |
| } {1 {DISTINCT aggregates must have exactly one argument}} |
| do_test distinctagg-2.2 { |
| catchsql { |
| SELECT group_concat(distinct a,b) FROM t1; |
| } |
| } {1 {DISTINCT aggregates must have exactly one argument}} |
| |
| #-------------------------------------------------------------------------- |
| reset_db |
| do_execsql_test 3.0 { |
| CREATE TABLE t1(a, b, c); |
| CREATE TABLE t2(d, e, f); |
| |
| INSERT INTO t1 VALUES (1, 1, 1); |
| INSERT INTO t1 VALUES (2, 2, 2); |
| INSERT INTO t1 VALUES (3, 3, 3); |
| INSERT INTO t1 VALUES (4, 1, 4); |
| INSERT INTO t1 VALUES (5, 2, 1); |
| INSERT INTO t1 VALUES (5, 3, 2); |
| INSERT INTO t1 VALUES (4, 1, 3); |
| INSERT INTO t1 VALUES (3, 2, 4); |
| INSERT INTO t1 VALUES (2, 3, 1); |
| INSERT INTO t1 VALUES (1, 1, 2); |
| |
| INSERT INTO t2 VALUES('a', 'a', 'a'); |
| INSERT INTO t2 VALUES('b', 'b', 'b'); |
| INSERT INTO t2 VALUES('c', 'c', 'c'); |
| |
| CREATE INDEX t1a ON t1(a); |
| CREATE INDEX t1bc ON t1(b, c); |
| } |
| |
| foreach {tn use_eph sql res} { |
| 1 0 "SELECT count(DISTINCT a) FROM t1" 5 |
| 2 0 "SELECT count(DISTINCT b) FROM t1" 3 |
| 3 1 "SELECT count(DISTINCT c) FROM t1" 4 |
| 4 0 "SELECT count(DISTINCT c) FROM t1 WHERE b=3" 3 |
| 5 0 "SELECT count(DISTINCT rowid) FROM t1" 10 |
| 6 0 "SELECT count(DISTINCT a) FROM t1, t2" 5 |
| 7 0 "SELECT count(DISTINCT a) FROM t2, t1" 5 |
| 8 1 "SELECT count(DISTINCT a+b) FROM t1, t2, t2, t2" 6 |
| 9 0 "SELECT count(DISTINCT c) FROM t1 WHERE c=2" 1 |
| 10 1 "SELECT count(DISTINCT t1.rowid) FROM t1, t2" 10 |
| } { |
| do_test 3.$tn.1 { |
| set prg [db eval "EXPLAIN $sql"] |
| set idx [lsearch $prg OpenEphemeral] |
| expr {$idx>=0} |
| } $use_eph |
| |
| do_execsql_test 3.$tn.2 $sql $res |
| } |
| |
| do_execsql_test 3.10 { |
| SELECT a, count(DISTINCT b) FROM t1 GROUP BY a; |
| } { |
| 1 1 2 2 3 2 4 1 5 2 |
| } |
| |
| #-------------------------------------------------------------------------- |
| reset_db |
| do_execsql_test 3.0 { |
| CREATE TABLE t1(a, b, c); |
| CREATE INDEX t1a ON t1(a); |
| CREATE INDEX t1bc ON t1(b, c); |
| |
| INSERT INTO t1 VALUES(1, 'A', 1); |
| INSERT INTO t1 VALUES(1, 'A', 1); |
| INSERT INTO t1 VALUES(2, 'A', 2); |
| INSERT INTO t1 VALUES(2, 'A', 2); |
| INSERT INTO t1 VALUES(1, 'B', 1); |
| INSERT INTO t1 VALUES(2, 'B', 2); |
| INSERT INTO t1 VALUES(3, 'B', 3); |
| INSERT INTO t1 VALUES(NULL, 'B', NULL); |
| INSERT INTO t1 VALUES(NULL, 'C', NULL); |
| INSERT INTO t1 VALUES('d', 'D', 'd'); |
| |
| CREATE TABLE t2(d, e, f); |
| CREATE INDEX t2def ON t2(d, e, f); |
| |
| INSERT INTO t2 VALUES(1, 1, 'a'); |
| INSERT INTO t2 VALUES(1, 1, 'a'); |
| INSERT INTO t2 VALUES(1, 2, 'a'); |
| INSERT INTO t2 VALUES(1, 2, 'a'); |
| INSERT INTO t2 VALUES(1, 2, 'b'); |
| INSERT INTO t2 VALUES(1, 3, 'b'); |
| INSERT INTO t2 VALUES(1, 3, 'a'); |
| INSERT INTO t2 VALUES(1, 3, 'b'); |
| INSERT INTO t2 VALUES(2, 3, 'x'); |
| INSERT INTO t2 VALUES(2, 3, 'y'); |
| INSERT INTO t2 VALUES(2, 3, 'z'); |
| |
| CREATE TABLE t3(x, y, z); |
| INSERT INTO t3 VALUES(1,1,1); |
| INSERT INTO t3 VALUES(2,2,2); |
| } |
| |
| foreach {tn use_eph sql res} { |
| 1 0 "SELECT count(DISTINCT c) FROM t1 GROUP BY b" {2 3 0 1} |
| 2 1 "SELECT count(DISTINCT a) FROM t1 GROUP BY b" {2 3 0 1} |
| 3 1 "SELECT count(DISTINCT a) FROM t1 GROUP BY b+c" {0 1 1 1 1} |
| |
| 4 0 "SELECT count(DISTINCT f) FROM t2 GROUP BY d, e" {1 2 2 3} |
| 5 1 "SELECT count(DISTINCT f) FROM t2 GROUP BY d" {2 3} |
| 6 0 "SELECT count(DISTINCT f) FROM t2 WHERE d IS 1 GROUP BY e" {1 2 2} |
| } { |
| do_test 4.$tn.1 { |
| set prg [db eval "EXPLAIN $sql"] |
| set idx [lsearch $prg OpenEphemeral] |
| expr {$idx>=0} |
| } $use_eph |
| |
| do_execsql_test 4.$tn.2 $sql $res |
| } |
| |
| |
| set t3root [db one {SELECT rootpage FROM sqlite_schema WHERE name='t3'}] |
| foreach {tn use_t3 sql res} { |
| 1 1 "SELECT count(*) FROM t3" 2 |
| 2 0 "SELECT count(*) FROM t1" 10 |
| 2 1 "SELECT count(DISTINCT a) FROM t1, t3" 4 |
| 3 1 "SELECT count(DISTINCT a) FROM t1 LEFT JOIN t3" 4 |
| 4 1 "SELECT count(DISTINCT a) FROM t1 LEFT JOIN t3 WHERE t3.x=1" 4 |
| 5 1 "SELECT count(DISTINCT a) FROM t1 LEFT JOIN t3 WHERE t3.x=0" 0 |
| 6 1 "SELECT count(DISTINCT a) FROM t1 LEFT JOIN t3 ON (t3.x=0)" 4 |
| 7 1 "SELECT count(DISTINCT x) FROM t1 LEFT JOIN t3" 2 |
| 8 1 "SELECT count(DISTINCT x) FROM t1 LEFT JOIN t3 WHERE t3.x=1" 1 |
| 9 1 "SELECT count(DISTINCT x) FROM t1 LEFT JOIN t3 WHERE t3.x=0" 0 |
| 10 1 "SELECT count(DISTINCT x) FROM t1 LEFT JOIN t3 ON (t3.x=0)" 0 |
| |
| } { |
| do_test 5.$tn.1 { |
| set bUse 0 |
| db eval "EXPLAIN $sql" a { |
| if {$a(opcode)=="OpenRead" && $a(p2)==$t3root} {set bUse 1} |
| } |
| set bUse |
| } $use_t3 |
| |
| do_execsql_test 5.$tn.2 $sql $res |
| } |
| |
| #------------------------------------------------------------------------- |
| reset_db |
| do_execsql_test 6.0 { |
| CREATE TABLE t1(a, b); |
| CREATE TABLE t2(c, d); |
| INSERT INTO t1 VALUES(123,456); |
| INSERT INTO t2 VALUES(123,456); |
| } |
| do_execsql_test 6.1 { |
| SELECT count(DISTINCT c) FROM t1 LEFT JOIN t2; |
| } {1} |
| |
| do_execsql_test 7.0 { |
| CREATE TABLE v1 ( v2 UNIQUE, v3 AS( TYPEOF ( NULL ) ) UNIQUE ); |
| SELECT COUNT ( DISTINCT TRUE ) FROM v1 GROUP BY likelihood ( v3 , 0.100000 ); |
| } |
| |
| |
| finish_test |
| |