| Index: third_party/sqlite/sqlite-src-3080704/test/autoindex3.test
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| diff --git a/third_party/sqlite/sqlite-src-3080704/test/autoindex3.test b/third_party/sqlite/sqlite-src-3080704/test/autoindex3.test
|
| new file mode 100644
|
| index 0000000000000000000000000000000000000000..33053bba67e28e476e098ee251cb1a140d2cf451
|
| --- /dev/null
|
| +++ b/third_party/sqlite/sqlite-src-3080704/test/autoindex3.test
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| @@ -0,0 +1,58 @@
|
| +# 2014-06-17
|
| +#
|
| +# 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 testing automatic index creation logic,
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| +# and specifically that an automatic index will not be created that
|
| +# shadows a declared index.
|
| +#
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| +
|
| +set testdir [file dirname $argv0]
|
| +source $testdir/tester.tcl
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| +
|
| +# The t1b and t2d indexes are not very selective. It used to be that
|
| +# the autoindex mechanism would create automatic indexes on t1(b) or
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| +# t2(d), make assumptions that they were reasonably selective, and use
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| +# them instead of t1b or t2d. But that would be cheating, because the
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| +# automatic index cannot be any more selective than the real index.
|
| +#
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| +# This test verifies that the cheat is no longer allowed.
|
| +#
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| +do_execsql_test autoindex3-100 {
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| + CREATE TABLE t1(a,b,x);
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| + CREATE TABLE t2(c,d,y);
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| + CREATE INDEX t1b ON t1(b);
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| + CREATE INDEX t2d ON t2(d);
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| + ANALYZE sqlite_master;
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| + INSERT INTO sqlite_stat1 VALUES('t1','t1b','10000 500');
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| + INSERT INTO sqlite_stat1 VALUES('t2','t2d','10000 500');
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| + ANALYZE sqlite_master;
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| + EXPLAIN QUERY PLAN SELECT * FROM t1, t2 WHERE d=b;
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| +} {~/AUTO/}
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| +
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| +# Automatic indexes can still be used if existing indexes do not
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| +# participate in == constraints.
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| +#
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| +do_execsql_test autoindex3-110 {
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| + EXPLAIN QUERY PLAN SELECT * FROM t1, t2 WHERE d>b AND x=y;
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| +} {/AUTO/}
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| +do_execsql_test autoindex3-120 {
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| + EXPLAIN QUERY PLAN SELECT * FROM t1, t2 WHERE d<b AND x=y;
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| +} {/AUTO/}
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| +do_execsql_test autoindex3-130 {
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| + EXPLAIN QUERY PLAN SELECT * FROM t1, t2 WHERE d IS NULL AND x=y;
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| +} {/AUTO/}
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| +do_execsql_test autoindex3-140 {
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| + EXPLAIN QUERY PLAN SELECT * FROM t1, t2 WHERE d IN (5,b) AND x=y;
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| +} {/AUTO/}
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| +
|
| +
|
| +finish_test
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|
|