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# 2015-03-16
#
# 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 file is testing OR expressions where terms can be
# factored from either side of the OR and combined into a single new
# AND term that is beneficial to the search. Examples:
#
# (x>A OR x=A) --> ... AND (x>=A)
# (x>A OR (x=A AND y>=B) --> ... AND (x>=A)
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
set ::testprefix whereK
do_execsql_test 1.1 {
CREATE TABLE t1(a,b,c);
WITH RECURSIVE c(x) AS (VALUES(0) UNION ALL SELECT x+1 FROM c WHERE x<99)
INSERT INTO t1(a,b,c) SELECT x, x/10, x%10 FROM c;
CREATE INDEX t1bc ON t1(b,c);
SELECT a FROM t1 WHERE b>9 OR b=9 ORDER BY +a;
} {90 91 92 93 94 95 96 97 98 99}
do_execsql_test 1.1eqp {
EXPLAIN QUERY PLAN
SELECT a FROM t1 WHERE b>9 OR b=9 ORDER BY +a;
} {/SEARCH t1 USING INDEX t1bc/}
do_execsql_test 1.2 {
SELECT a FROM t1 WHERE b>8 OR (b=8 AND c>7) ORDER BY +a;
} {88 89 90 91 92 93 94 95 96 97 98 99}
do_execsql_test 1.2eqp {
EXPLAIN QUERY PLAN
SELECT a FROM t1 WHERE b>8 OR (b=8 AND c>7) ORDER BY +a;
} {/SEARCH t1 USING INDEX t1bc/}
do_execsql_test 1.3 {
SELECT a FROM t1 WHERE (b=8 AND c>7) OR b>8 ORDER BY +a;
} {88 89 90 91 92 93 94 95 96 97 98 99}
do_execsql_test 1.3eqp {
EXPLAIN QUERY PLAN
SELECT a FROM t1 WHERE (b=8 AND c>7) OR b>8 ORDER BY +a;
} {/SEARCH t1 USING INDEX t1bc/}
do_execsql_test 1.4 {
SELECT a FROM t1 WHERE (b=8 AND c>7) OR 8<b ORDER BY +a;
} {88 89 90 91 92 93 94 95 96 97 98 99}
do_execsql_test 1.4eqp {
EXPLAIN QUERY PLAN
SELECT a FROM t1 WHERE (b=8 AND c>7) OR 8<b ORDER BY +a;
} {/SEARCH t1 USING INDEX t1bc/}
do_execsql_test 1.5 {
SELECT a FROM t1 WHERE (b=8 AND c>7) OR (b>8 AND c NOT IN (4,5,6))
ORDER BY +a;
} {88 89 90 91 92 93 97 98 99}
do_execsql_test 1.5eqp {
EXPLAIN QUERY PLAN
SELECT a FROM t1 WHERE (b=8 AND c>7) OR (b>8 AND c NOT IN (4,5,6))
ORDER BY +a;
} {/SEARCH t1 USING INDEX t1bc/}
finish_test
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