| # 2014-03-31 |
| # |
| # 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. |
| # |
| #*********************************************************************** |
| # |
| # Test cases for query planning decisions where one candidate index |
| # covers a proper superset of the WHERE clause terms of another |
| # candidate index. |
| # |
| |
| set testdir [file dirname $argv0] |
| source $testdir/tester.tcl |
| |
| do_execsql_test whereH-1.1 { |
| CREATE TABLE t1(a,b,c,d); |
| CREATE INDEX t1abc ON t1(a,b,c); |
| CREATE INDEX t1bc ON t1(b,c); |
| |
| EXPLAIN QUERY PLAN |
| SELECT d FROM t1 WHERE a=? AND b=? AND c>=? ORDER BY c; |
| } {/INDEX t1abc /} |
| do_execsql_test whereH-1.2 { |
| EXPLAIN QUERY PLAN |
| SELECT d FROM t1 WHERE a=? AND b=? AND c>=? ORDER BY c; |
| } {~/TEMP B-TREE FOR ORDER BY/} |
| |
| do_execsql_test whereH-2.1 { |
| DROP TABLE t1; |
| CREATE TABLE t1(a,b,c,d); |
| CREATE INDEX t1bc ON t1(b,c); |
| CREATE INDEX t1abc ON t1(a,b,c); |
| |
| EXPLAIN QUERY PLAN |
| SELECT d FROM t1 WHERE a=? AND b=? AND c>=? ORDER BY c; |
| } {/INDEX t1abc /} |
| do_execsql_test whereH-2.2 { |
| EXPLAIN QUERY PLAN |
| SELECT d FROM t1 WHERE a=? AND b=? AND c>=? ORDER BY c; |
| } {~/TEMP B-TREE FOR ORDER BY/} |
| |
| do_execsql_test whereH-3.1 { |
| DROP TABLE t1; |
| CREATE TABLE t1(a,b,c,d,e); |
| CREATE INDEX t1cd ON t1(c,d); |
| CREATE INDEX t1bcd ON t1(b,c,d); |
| CREATE INDEX t1abcd ON t1(a,b,c,d); |
| |
| EXPLAIN QUERY PLAN |
| SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d; |
| } {/INDEX t1abcd /} |
| do_execsql_test whereH-3.2 { |
| EXPLAIN QUERY PLAN |
| SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d; |
| } {~/TEMP B-TREE FOR ORDER BY/} |
| |
| do_execsql_test whereH-4.1 { |
| DROP TABLE t1; |
| CREATE TABLE t1(a,b,c,d,e); |
| CREATE INDEX t1cd ON t1(c,d); |
| CREATE INDEX t1abcd ON t1(a,b,c,d); |
| CREATE INDEX t1bcd ON t1(b,c,d); |
| |
| EXPLAIN QUERY PLAN |
| SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d; |
| } {/INDEX t1abcd /} |
| do_execsql_test whereH-4.2 { |
| EXPLAIN QUERY PLAN |
| SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d; |
| } {~/TEMP B-TREE FOR ORDER BY/} |
| |
| do_execsql_test whereH-5.1 { |
| DROP TABLE t1; |
| CREATE TABLE t1(a,b,c,d,e); |
| CREATE INDEX t1bcd ON t1(b,c,d); |
| CREATE INDEX t1cd ON t1(c,d); |
| CREATE INDEX t1abcd ON t1(a,b,c,d); |
| |
| EXPLAIN QUERY PLAN |
| SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d; |
| } {/INDEX t1abcd /} |
| do_execsql_test whereH-5.2 { |
| EXPLAIN QUERY PLAN |
| SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d; |
| } {~/TEMP B-TREE FOR ORDER BY/} |
| |
| do_execsql_test whereH-6.1 { |
| DROP TABLE t1; |
| CREATE TABLE t1(a,b,c,d,e); |
| CREATE INDEX t1bcd ON t1(b,c,d); |
| CREATE INDEX t1abcd ON t1(a,b,c,d); |
| CREATE INDEX t1cd ON t1(c,d); |
| |
| EXPLAIN QUERY PLAN |
| SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d; |
| } {/INDEX t1abcd /} |
| do_execsql_test whereH-6.2 { |
| EXPLAIN QUERY PLAN |
| SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d; |
| } {~/TEMP B-TREE FOR ORDER BY/} |
| |
| do_execsql_test whereH-7.1 { |
| DROP TABLE t1; |
| CREATE TABLE t1(a,b,c,d,e); |
| CREATE INDEX t1abcd ON t1(a,b,c,d); |
| CREATE INDEX t1bcd ON t1(b,c,d); |
| CREATE INDEX t1cd ON t1(c,d); |
| |
| EXPLAIN QUERY PLAN |
| SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d; |
| } {/INDEX t1abcd /} |
| do_execsql_test whereH-7.2 { |
| EXPLAIN QUERY PLAN |
| SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d; |
| } {~/TEMP B-TREE FOR ORDER BY/} |
| |
| do_execsql_test whereH-8.1 { |
| DROP TABLE t1; |
| CREATE TABLE t1(a,b,c,d,e); |
| CREATE INDEX t1abcd ON t1(a,b,c,d); |
| CREATE INDEX t1cd ON t1(c,d); |
| CREATE INDEX t1bcd ON t1(b,c,d); |
| |
| EXPLAIN QUERY PLAN |
| SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d; |
| } {/INDEX t1abcd /} |
| do_execsql_test whereH-8.2 { |
| EXPLAIN QUERY PLAN |
| SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d; |
| } {~/TEMP B-TREE FOR ORDER BY/} |
| |
| |
| |
| finish_test |