243 lines
7.2 KiB
Plaintext
243 lines
7.2 KiB
Plaintext
# 2014-10-08
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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# This file implements tests for using STAT4 information
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# on a descending index in a range query.
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#
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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set ::testprefix analyzeE
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ifcapable {!stat4} {
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finish_test
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return
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}
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# Verify that range queries on an ASCENDING index will use the
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# index only if the range covers only a small fraction of the
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# entries.
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#
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do_execsql_test analyzeE-1.0 {
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CREATE TABLE t1(a,b);
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WITH RECURSIVE
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cnt(x) AS (VALUES(1000) UNION ALL SELECT x+1 FROM cnt WHERE x<2000)
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INSERT INTO t1(a,b) SELECT x, x FROM cnt;
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CREATE INDEX t1a ON t1(a);
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ANALYZE;
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} {}
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do_execsql_test analyzeE-1.1 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a BETWEEN 500 AND 2500;
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} {/SCAN TABLE t1/}
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do_execsql_test analyzeE-1.2 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a BETWEEN 2900 AND 3000;
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} {/SEARCH TABLE t1 USING INDEX t1a/}
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do_execsql_test analyzeE-1.3 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a BETWEEN 1700 AND 1750;
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} {/SEARCH TABLE t1 USING INDEX t1a/}
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do_execsql_test analyzeE-1.4 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a BETWEEN 1 AND 500
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} {/SEARCH TABLE t1 USING INDEX t1a/}
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do_execsql_test analyzeE-1.5 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a BETWEEN 3000 AND 3000000
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} {/SEARCH TABLE t1 USING INDEX t1a/}
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do_execsql_test analyzeE-1.6 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a<500
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} {/SEARCH TABLE t1 USING INDEX t1a/}
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do_execsql_test analyzeE-1.7 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a>2500
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} {/SEARCH TABLE t1 USING INDEX t1a/}
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do_execsql_test analyzeE-1.8 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a>1900
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} {/SEARCH TABLE t1 USING INDEX t1a/}
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do_execsql_test analyzeE-1.9 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a>1100
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} {/SCAN TABLE t1/}
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do_execsql_test analyzeE-1.10 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a<1100
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} {/SEARCH TABLE t1 USING INDEX t1a/}
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do_execsql_test analyzeE-1.11 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a<1900
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} {/SCAN TABLE t1/}
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# Verify that everything works the same on a DESCENDING index.
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#
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do_execsql_test analyzeE-2.0 {
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DROP INDEX t1a;
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CREATE INDEX t1a ON t1(a DESC);
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ANALYZE;
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} {}
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do_execsql_test analyzeE-2.1 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a BETWEEN 500 AND 2500;
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} {/SCAN TABLE t1/}
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do_execsql_test analyzeE-2.2 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a BETWEEN 2900 AND 3000;
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} {/SEARCH TABLE t1 USING INDEX t1a/}
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do_execsql_test analyzeE-2.3 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a BETWEEN 1700 AND 1750;
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} {/SEARCH TABLE t1 USING INDEX t1a/}
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do_execsql_test analyzeE-2.4 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a BETWEEN 1 AND 500
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} {/SEARCH TABLE t1 USING INDEX t1a/}
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do_execsql_test analyzeE-2.5 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a BETWEEN 3000 AND 3000000
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} {/SEARCH TABLE t1 USING INDEX t1a/}
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do_execsql_test analyzeE-2.6 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a<500
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} {/SEARCH TABLE t1 USING INDEX t1a/}
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do_execsql_test analyzeE-2.7 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a>2500
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} {/SEARCH TABLE t1 USING INDEX t1a/}
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do_execsql_test analyzeE-2.8 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a>1900
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} {/SEARCH TABLE t1 USING INDEX t1a/}
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do_execsql_test analyzeE-2.9 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a>1100
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} {/SCAN TABLE t1/}
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do_execsql_test analyzeE-2.10 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a<1100
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} {/SEARCH TABLE t1 USING INDEX t1a/}
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do_execsql_test analyzeE-2.11 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a<1900
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} {/SCAN TABLE t1/}
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# Now do a range query on the second term of an ASCENDING index
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# where the first term is constrained by equality.
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#
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do_execsql_test analyzeE-3.0 {
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DROP TABLE t1;
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CREATE TABLE t1(a,b,c);
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WITH RECURSIVE
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cnt(x) AS (VALUES(1000) UNION ALL SELECT x+1 FROM cnt WHERE x<2000)
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INSERT INTO t1(a,b,c) SELECT x, x, 123 FROM cnt;
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CREATE INDEX t1ca ON t1(c,a);
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ANALYZE;
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} {}
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do_execsql_test analyzeE-3.1 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a BETWEEN 500 AND 2500 AND c=123;
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} {/SCAN TABLE t1/}
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do_execsql_test analyzeE-3.2 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a BETWEEN 2900 AND 3000 AND c=123;
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} {/SEARCH TABLE t1 USING INDEX t1ca/}
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do_execsql_test analyzeE-3.3 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a BETWEEN 1700 AND 1750 AND c=123;
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} {/SEARCH TABLE t1 USING INDEX t1ca/}
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do_execsql_test analyzeE-3.4 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a BETWEEN 1 AND 500 AND c=123
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} {/SEARCH TABLE t1 USING INDEX t1ca/}
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do_execsql_test analyzeE-3.5 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a BETWEEN 3000 AND 3000000 AND c=123
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} {/SEARCH TABLE t1 USING INDEX t1ca/}
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do_execsql_test analyzeE-3.6 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a<500 AND c=123
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} {/SEARCH TABLE t1 USING INDEX t1ca/}
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do_execsql_test analyzeE-3.7 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a>2500 AND c=123
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} {/SEARCH TABLE t1 USING INDEX t1ca/}
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do_execsql_test analyzeE-3.8 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a>1900 AND c=123
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} {/SEARCH TABLE t1 USING INDEX t1ca/}
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do_execsql_test analyzeE-3.9 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a>1100 AND c=123
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} {/SCAN TABLE t1/}
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do_execsql_test analyzeE-3.10 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a<1100 AND c=123
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} {/SEARCH TABLE t1 USING INDEX t1ca/}
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do_execsql_test analyzeE-3.11 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a<1900 AND c=123
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} {/SCAN TABLE t1/}
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# Repeat the 3.x tests using a DESCENDING index
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#
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do_execsql_test analyzeE-4.0 {
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DROP INDEX t1ca;
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CREATE INDEX t1ca ON t1(c ASC,a DESC);
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ANALYZE;
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} {}
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do_execsql_test analyzeE-4.1 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a BETWEEN 500 AND 2500 AND c=123;
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} {/SCAN TABLE t1/}
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do_execsql_test analyzeE-4.2 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a BETWEEN 2900 AND 3000 AND c=123;
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} {/SEARCH TABLE t1 USING INDEX t1ca/}
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do_execsql_test analyzeE-4.3 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a BETWEEN 1700 AND 1750 AND c=123;
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} {/SEARCH TABLE t1 USING INDEX t1ca/}
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do_execsql_test analyzeE-4.4 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a BETWEEN 1 AND 500 AND c=123
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} {/SEARCH TABLE t1 USING INDEX t1ca/}
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do_execsql_test analyzeE-4.5 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a BETWEEN 3000 AND 3000000 AND c=123
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} {/SEARCH TABLE t1 USING INDEX t1ca/}
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do_execsql_test analyzeE-4.6 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a<500 AND c=123
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} {/SEARCH TABLE t1 USING INDEX t1ca/}
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do_execsql_test analyzeE-4.7 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a>2500 AND c=123
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} {/SEARCH TABLE t1 USING INDEX t1ca/}
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do_execsql_test analyzeE-4.8 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a>1900 AND c=123
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} {/SEARCH TABLE t1 USING INDEX t1ca/}
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do_execsql_test analyzeE-4.9 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a>1100 AND c=123
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} {/SCAN TABLE t1/}
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do_execsql_test analyzeE-4.10 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a<1100 AND c=123
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} {/SEARCH TABLE t1 USING INDEX t1ca/}
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do_execsql_test analyzeE-4.11 {
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a<1900 AND c=123
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} {/SCAN TABLE t1/}
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finish_test
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