1# 2014-03-31 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# 12# Test cases for query planning decisions where one candidate index 13# covers a proper superset of the WHERE clause terms of another 14# candidate index. 15# 16 17set testdir [file dirname $argv0] 18source $testdir/tester.tcl 19 20do_execsql_test whereH-1.1 { 21 CREATE TABLE t1(a,b,c,d); 22 CREATE INDEX t1abc ON t1(a,b,c); 23 CREATE INDEX t1bc ON t1(b,c); 24 25 EXPLAIN QUERY PLAN 26 SELECT d FROM t1 WHERE a=? AND b=? AND c>=? ORDER BY c; 27} {/INDEX t1abc /} 28do_execsql_test whereH-1.2 { 29 EXPLAIN QUERY PLAN 30 SELECT d FROM t1 WHERE a=? AND b=? AND c>=? ORDER BY c; 31} {~/TEMP B-TREE FOR ORDER BY/} 32 33do_execsql_test whereH-2.1 { 34 DROP TABLE t1; 35 CREATE TABLE t1(a,b,c,d); 36 CREATE INDEX t1bc ON t1(b,c); 37 CREATE INDEX t1abc ON t1(a,b,c); 38 39 EXPLAIN QUERY PLAN 40 SELECT d FROM t1 WHERE a=? AND b=? AND c>=? ORDER BY c; 41} {/INDEX t1abc /} 42do_execsql_test whereH-2.2 { 43 EXPLAIN QUERY PLAN 44 SELECT d FROM t1 WHERE a=? AND b=? AND c>=? ORDER BY c; 45} {~/TEMP B-TREE FOR ORDER BY/} 46 47do_execsql_test whereH-3.1 { 48 DROP TABLE t1; 49 CREATE TABLE t1(a,b,c,d,e); 50 CREATE INDEX t1cd ON t1(c,d); 51 CREATE INDEX t1bcd ON t1(b,c,d); 52 CREATE INDEX t1abcd ON t1(a,b,c,d); 53 54 EXPLAIN QUERY PLAN 55 SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d; 56} {/INDEX t1abcd /} 57do_execsql_test whereH-3.2 { 58 EXPLAIN QUERY PLAN 59 SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d; 60} {~/TEMP B-TREE FOR ORDER BY/} 61 62do_execsql_test whereH-4.1 { 63 DROP TABLE t1; 64 CREATE TABLE t1(a,b,c,d,e); 65 CREATE INDEX t1cd ON t1(c,d); 66 CREATE INDEX t1abcd ON t1(a,b,c,d); 67 CREATE INDEX t1bcd ON t1(b,c,d); 68 69 EXPLAIN QUERY PLAN 70 SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d; 71} {/INDEX t1abcd /} 72do_execsql_test whereH-4.2 { 73 EXPLAIN QUERY PLAN 74 SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d; 75} {~/TEMP B-TREE FOR ORDER BY/} 76 77do_execsql_test whereH-5.1 { 78 DROP TABLE t1; 79 CREATE TABLE t1(a,b,c,d,e); 80 CREATE INDEX t1bcd ON t1(b,c,d); 81 CREATE INDEX t1cd ON t1(c,d); 82 CREATE INDEX t1abcd ON t1(a,b,c,d); 83 84 EXPLAIN QUERY PLAN 85 SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d; 86} {/INDEX t1abcd /} 87do_execsql_test whereH-5.2 { 88 EXPLAIN QUERY PLAN 89 SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d; 90} {~/TEMP B-TREE FOR ORDER BY/} 91 92do_execsql_test whereH-6.1 { 93 DROP TABLE t1; 94 CREATE TABLE t1(a,b,c,d,e); 95 CREATE INDEX t1bcd ON t1(b,c,d); 96 CREATE INDEX t1abcd ON t1(a,b,c,d); 97 CREATE INDEX t1cd ON t1(c,d); 98 99 EXPLAIN QUERY PLAN 100 SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d; 101} {/INDEX t1abcd /} 102do_execsql_test whereH-6.2 { 103 EXPLAIN QUERY PLAN 104 SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d; 105} {~/TEMP B-TREE FOR ORDER BY/} 106 107do_execsql_test whereH-7.1 { 108 DROP TABLE t1; 109 CREATE TABLE t1(a,b,c,d,e); 110 CREATE INDEX t1abcd ON t1(a,b,c,d); 111 CREATE INDEX t1bcd ON t1(b,c,d); 112 CREATE INDEX t1cd ON t1(c,d); 113 114 EXPLAIN QUERY PLAN 115 SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d; 116} {/INDEX t1abcd /} 117do_execsql_test whereH-7.2 { 118 EXPLAIN QUERY PLAN 119 SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d; 120} {~/TEMP B-TREE FOR ORDER BY/} 121 122do_execsql_test whereH-8.1 { 123 DROP TABLE t1; 124 CREATE TABLE t1(a,b,c,d,e); 125 CREATE INDEX t1abcd ON t1(a,b,c,d); 126 CREATE INDEX t1cd ON t1(c,d); 127 CREATE INDEX t1bcd ON t1(b,c,d); 128 129 EXPLAIN QUERY PLAN 130 SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d; 131} {/INDEX t1abcd /} 132do_execsql_test whereH-8.2 { 133 EXPLAIN QUERY PLAN 134 SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d; 135} {~/TEMP B-TREE FOR ORDER BY/} 136 137 138 139finish_test 140