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Diffstat (limited to 'test/distinctagg.test')
| -rw-r--r-- | test/distinctagg.test | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/test/distinctagg.test b/test/distinctagg.test new file mode 100644 index 0000000..a34312e --- /dev/null +++ b/test/distinctagg.test @@ -0,0 +1,217 @@ +# 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 + |