Annotation of embedaddon/sqlite3/test/select3.test, revision 1.1
1.1 ! misho 1: # 2001 September 15
! 2: #
! 3: # The author disclaims copyright to this source code. In place of
! 4: # 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. The
! 12: # focus of this file is testing aggregate functions and the
! 13: # GROUP BY and HAVING clauses of SELECT statements.
! 14: #
! 15: # $Id: select3.test,v 1.23 2008/01/16 18:20:42 danielk1977 Exp $
! 16:
! 17: set testdir [file dirname $argv0]
! 18: source $testdir/tester.tcl
! 19:
! 20: # Build some test data
! 21: #
! 22: do_test select3-1.0 {
! 23: execsql {
! 24: CREATE TABLE t1(n int, log int);
! 25: BEGIN;
! 26: }
! 27: for {set i 1} {$i<32} {incr i} {
! 28: for {set j 0} {(1<<$j)<$i} {incr j} {}
! 29: execsql "INSERT INTO t1 VALUES($i,$j)"
! 30: }
! 31: execsql {
! 32: COMMIT
! 33: }
! 34: execsql {SELECT DISTINCT log FROM t1 ORDER BY log}
! 35: } {0 1 2 3 4 5}
! 36:
! 37: # Basic aggregate functions.
! 38: #
! 39: do_test select3-1.1 {
! 40: execsql {SELECT count(*) FROM t1}
! 41: } {31}
! 42: do_test select3-1.2 {
! 43: execsql {
! 44: SELECT min(n),min(log),max(n),max(log),sum(n),sum(log),avg(n),avg(log)
! 45: FROM t1
! 46: }
! 47: } {1 0 31 5 496 124 16.0 4.0}
! 48: do_test select3-1.3 {
! 49: execsql {SELECT max(n)/avg(n), max(log)/avg(log) FROM t1}
! 50: } {1.9375 1.25}
! 51:
! 52: # Try some basic GROUP BY clauses
! 53: #
! 54: do_test select3-2.1 {
! 55: execsql {SELECT log, count(*) FROM t1 GROUP BY log ORDER BY log}
! 56: } {0 1 1 1 2 2 3 4 4 8 5 15}
! 57: do_test select3-2.2 {
! 58: execsql {SELECT log, min(n) FROM t1 GROUP BY log ORDER BY log}
! 59: } {0 1 1 2 2 3 3 5 4 9 5 17}
! 60: do_test select3-2.3.1 {
! 61: execsql {SELECT log, avg(n) FROM t1 GROUP BY log ORDER BY log}
! 62: } {0 1.0 1 2.0 2 3.5 3 6.5 4 12.5 5 24.0}
! 63: do_test select3-2.3.2 {
! 64: execsql {SELECT log, avg(n)+1 FROM t1 GROUP BY log ORDER BY log}
! 65: } {0 2.0 1 3.0 2 4.5 3 7.5 4 13.5 5 25.0}
! 66: do_test select3-2.4 {
! 67: execsql {SELECT log, avg(n)-min(n) FROM t1 GROUP BY log ORDER BY log}
! 68: } {0 0.0 1 0.0 2 0.5 3 1.5 4 3.5 5 7.0}
! 69: do_test select3-2.5 {
! 70: execsql {SELECT log*2+1, avg(n)-min(n) FROM t1 GROUP BY log ORDER BY log}
! 71: } {1 0.0 3 0.0 5 0.5 7 1.5 9 3.5 11 7.0}
! 72: do_test select3-2.6 {
! 73: execsql {
! 74: SELECT log*2+1 as x, count(*) FROM t1 GROUP BY x ORDER BY x
! 75: }
! 76: } {1 1 3 1 5 2 7 4 9 8 11 15}
! 77: do_test select3-2.7 {
! 78: execsql {
! 79: SELECT log*2+1 AS x, count(*) AS y FROM t1 GROUP BY x ORDER BY y, x
! 80: }
! 81: } {1 1 3 1 5 2 7 4 9 8 11 15}
! 82: do_test select3-2.8 {
! 83: execsql {
! 84: SELECT log*2+1 AS x, count(*) AS y FROM t1 GROUP BY x ORDER BY 10-(x+y)
! 85: }
! 86: } {11 15 9 8 7 4 5 2 3 1 1 1}
! 87: #do_test select3-2.9 {
! 88: # catchsql {
! 89: # SELECT log, count(*) FROM t1 GROUP BY 'x' ORDER BY log;
! 90: # }
! 91: #} {1 {GROUP BY terms must not be non-integer constants}}
! 92: do_test select3-2.10 {
! 93: catchsql {
! 94: SELECT log, count(*) FROM t1 GROUP BY 0 ORDER BY log;
! 95: }
! 96: } {1 {1st GROUP BY term out of range - should be between 1 and 2}}
! 97: do_test select3-2.11 {
! 98: catchsql {
! 99: SELECT log, count(*) FROM t1 GROUP BY 3 ORDER BY log;
! 100: }
! 101: } {1 {1st GROUP BY term out of range - should be between 1 and 2}}
! 102: do_test select3-2.12 {
! 103: catchsql {
! 104: SELECT log, count(*) FROM t1 GROUP BY 1 ORDER BY log;
! 105: }
! 106: } {0 {0 1 1 1 2 2 3 4 4 8 5 15}}
! 107:
! 108: # Cannot have an empty GROUP BY
! 109: do_test select3-2.13 {
! 110: catchsql {
! 111: SELECT log, count(*) FROM t1 GROUP BY ORDER BY log;
! 112: }
! 113: } {1 {near "ORDER": syntax error}}
! 114: do_test select3-2.14 {
! 115: catchsql {
! 116: SELECT log, count(*) FROM t1 GROUP BY;
! 117: }
! 118: } {1 {near ";": syntax error}}
! 119:
! 120: # Cannot have a HAVING without a GROUP BY
! 121: #
! 122: do_test select3-3.1 {
! 123: set v [catch {execsql {SELECT log, count(*) FROM t1 HAVING log>=4}} msg]
! 124: lappend v $msg
! 125: } {1 {a GROUP BY clause is required before HAVING}}
! 126:
! 127: # Toss in some HAVING clauses
! 128: #
! 129: do_test select3-4.1 {
! 130: execsql {SELECT log, count(*) FROM t1 GROUP BY log HAVING log>=4 ORDER BY log}
! 131: } {4 8 5 15}
! 132: do_test select3-4.2 {
! 133: execsql {
! 134: SELECT log, count(*) FROM t1
! 135: GROUP BY log
! 136: HAVING count(*)>=4
! 137: ORDER BY log
! 138: }
! 139: } {3 4 4 8 5 15}
! 140: do_test select3-4.3 {
! 141: execsql {
! 142: SELECT log, count(*) FROM t1
! 143: GROUP BY log
! 144: HAVING count(*)>=4
! 145: ORDER BY max(n)+0
! 146: }
! 147: } {3 4 4 8 5 15}
! 148: do_test select3-4.4 {
! 149: execsql {
! 150: SELECT log AS x, count(*) AS y FROM t1
! 151: GROUP BY x
! 152: HAVING y>=4
! 153: ORDER BY max(n)+0
! 154: }
! 155: } {3 4 4 8 5 15}
! 156: do_test select3-4.5 {
! 157: execsql {
! 158: SELECT log AS x FROM t1
! 159: GROUP BY x
! 160: HAVING count(*)>=4
! 161: ORDER BY max(n)+0
! 162: }
! 163: } {3 4 5}
! 164:
! 165: do_test select3-5.1 {
! 166: execsql {
! 167: SELECT log, count(*), avg(n), max(n+log*2) FROM t1
! 168: GROUP BY log
! 169: ORDER BY max(n+log*2)+0, avg(n)+0
! 170: }
! 171: } {0 1 1.0 1 1 1 2.0 4 2 2 3.5 8 3 4 6.5 14 4 8 12.5 24 5 15 24.0 41}
! 172: do_test select3-5.2 {
! 173: execsql {
! 174: SELECT log, count(*), avg(n), max(n+log*2) FROM t1
! 175: GROUP BY log
! 176: ORDER BY max(n+log*2)+0, min(log,avg(n))+0
! 177: }
! 178: } {0 1 1.0 1 1 1 2.0 4 2 2 3.5 8 3 4 6.5 14 4 8 12.5 24 5 15 24.0 41}
! 179:
! 180: # Test sorting of GROUP BY results in the presence of an index
! 181: # on the GROUP BY column.
! 182: #
! 183: do_test select3-6.1 {
! 184: execsql {
! 185: SELECT log, min(n) FROM t1 GROUP BY log ORDER BY log;
! 186: }
! 187: } {0 1 1 2 2 3 3 5 4 9 5 17}
! 188: do_test select3-6.2 {
! 189: execsql {
! 190: SELECT log, min(n) FROM t1 GROUP BY log ORDER BY log DESC;
! 191: }
! 192: } {5 17 4 9 3 5 2 3 1 2 0 1}
! 193: do_test select3-6.3 {
! 194: execsql {
! 195: SELECT log, min(n) FROM t1 GROUP BY log ORDER BY 1;
! 196: }
! 197: } {0 1 1 2 2 3 3 5 4 9 5 17}
! 198: do_test select3-6.4 {
! 199: execsql {
! 200: SELECT log, min(n) FROM t1 GROUP BY log ORDER BY 1 DESC;
! 201: }
! 202: } {5 17 4 9 3 5 2 3 1 2 0 1}
! 203: do_test select3-6.5 {
! 204: execsql {
! 205: CREATE INDEX i1 ON t1(log);
! 206: SELECT log, min(n) FROM t1 GROUP BY log ORDER BY log;
! 207: }
! 208: } {0 1 1 2 2 3 3 5 4 9 5 17}
! 209: do_test select3-6.6 {
! 210: execsql {
! 211: SELECT log, min(n) FROM t1 GROUP BY log ORDER BY log DESC;
! 212: }
! 213: } {5 17 4 9 3 5 2 3 1 2 0 1}
! 214: do_test select3-6.7 {
! 215: execsql {
! 216: SELECT log, min(n) FROM t1 GROUP BY log ORDER BY 1;
! 217: }
! 218: } {0 1 1 2 2 3 3 5 4 9 5 17}
! 219: do_test select3-6.8 {
! 220: execsql {
! 221: SELECT log, min(n) FROM t1 GROUP BY log ORDER BY 1 DESC;
! 222: }
! 223: } {5 17 4 9 3 5 2 3 1 2 0 1}
! 224:
! 225: # Sometimes an aggregate query can return no rows at all.
! 226: #
! 227: do_test select3-7.1 {
! 228: execsql {
! 229: CREATE TABLE t2(a,b);
! 230: INSERT INTO t2 VALUES(1,2);
! 231: SELECT a, sum(b) FROM t2 WHERE b=5 GROUP BY a;
! 232: }
! 233: } {}
! 234: do_test select3-7.2 {
! 235: execsql {
! 236: SELECT a, sum(b) FROM t2 WHERE b=5;
! 237: }
! 238: } {{} {}}
! 239:
! 240: # If a table column is of type REAL but we are storing integer values
! 241: # in it, the values are stored as integers to take up less space. The
! 242: # values are converted by to REAL as they are read out of the table.
! 243: # Make sure the GROUP BY clause does this conversion correctly.
! 244: # Ticket #2251.
! 245: #
! 246: do_test select3-8.1 {
! 247: execsql {
! 248: CREATE TABLE A (
! 249: A1 DOUBLE,
! 250: A2 VARCHAR COLLATE NOCASE,
! 251: A3 DOUBLE
! 252: );
! 253: INSERT INTO A VALUES(39136,'ABC',1201900000);
! 254: INSERT INTO A VALUES(39136,'ABC',1207000000);
! 255: SELECT typeof(sum(a3)) FROM a;
! 256: }
! 257: } {real}
! 258: do_test select3-8.2 {
! 259: execsql {
! 260: SELECT typeof(sum(a3)) FROM a GROUP BY a1;
! 261: }
! 262: } {real}
! 263:
! 264: finish_test
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