From 569c6676a6ddb0ff73821d7693b5e18ddef809b9 Mon Sep 17 00:00:00 2001 From: Hans-Christoph Steiner Date: Thu, 16 Oct 2014 22:51:35 -0400 Subject: Imported Upstream version 3.2.0 --- test/tkt-b75a9ca6b0.test | 77 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 test/tkt-b75a9ca6b0.test (limited to 'test/tkt-b75a9ca6b0.test') diff --git a/test/tkt-b75a9ca6b0.test b/test/tkt-b75a9ca6b0.test new file mode 100644 index 0000000..0c81a53 --- /dev/null +++ b/test/tkt-b75a9ca6b0.test @@ -0,0 +1,77 @@ +# 2014-04-21 +# +# 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 that ticket [b75a9ca6b0] has been fixed. +# +# Ticket [b75a9ca6b0] concerns queries that have both a GROUP BY +# and an ORDER BY. This code verifies that SQLite is able to +# optimize out the ORDER BY in some circumstances, but retains the +# ORDER BY when necessary. +# + +set testdir [file dirname $argv0] +source $testdir/tester.tcl +set testprefix tkt-b75a9ca6b0 + +do_execsql_test 1 { + CREATE TABLE t1 (x, y); + INSERT INTO t1 VALUES (1, 3); + INSERT INTO t1 VALUES (2, 2); + INSERT INTO t1 VALUES (3, 1); +} + +do_execsql_test 1.1 { + CREATE INDEX i1 ON t1(x, y); +} + +set idxscan {0 0 0 {SCAN TABLE t1 USING COVERING INDEX i1}} +set tblscan {0 0 0 {SCAN TABLE t1}} +set grpsort {0 0 0 {USE TEMP B-TREE FOR GROUP BY}} +set sort {0 0 0 {USE TEMP B-TREE FOR ORDER BY}} + +foreach {tn q res eqp} [subst -nocommands { + 1 "SELECT * FROM t1 GROUP BY x, y ORDER BY x,y" + {1 3 2 2 3 1} {$idxscan} + + 2 "SELECT * FROM t1 GROUP BY x, y ORDER BY x" + {1 3 2 2 3 1} {$idxscan $sort} + + 3 "SELECT * FROM t1 GROUP BY y, x ORDER BY y, x" + {3 1 2 2 1 3} {$idxscan $sort} + + 4 "SELECT * FROM t1 GROUP BY x ORDER BY x" + {1 3 2 2 3 1} {$idxscan} + + 5 "SELECT * FROM t1 GROUP BY y ORDER BY y" + {3 1 2 2 1 3} {$tblscan $grpsort} + + 6 "SELECT * FROM t1 GROUP BY y ORDER BY x" + {1 3 2 2 3 1} {$tblscan $grpsort $sort} + + 7 "SELECT * FROM t1 GROUP BY x, y ORDER BY x, y DESC" + {1 3 2 2 3 1} {$idxscan $sort} + + 8 "SELECT * FROM t1 GROUP BY x, y ORDER BY x DESC, y DESC" + {3 1 2 2 1 3} {$idxscan $sort} + + 9 "SELECT * FROM t1 GROUP BY x, y ORDER BY x ASC, y ASC" + {1 3 2 2 3 1} {$idxscan} + + 10 "SELECT * FROM t1 GROUP BY x, y ORDER BY x COLLATE nocase, y" + {1 3 2 2 3 1} {$idxscan $sort} + +}] { + do_execsql_test 1.$tn.1 $q $res + do_eqp_test 1.$tn.2 $q $eqp +} + + +finish_test -- cgit v1.2.3