mirror of
https://github.com/tursodatabase/libsql.git
synced 2024-12-15 19:09:41 +00:00
38 lines
990 B
Plaintext
38 lines
990 B
Plaintext
|
|
-- random() is not optimized out
|
|
EXPLAIN SELECT * FROM x1, x2 WHERE x=1 ORDER BY random();
|
|
|
|
|
|
-- random() is not optimized out
|
|
EXPLAIN SELECT * FROM x1, x2 WHERE x=1 ORDER BY random();
|
|
|
|
|
|
-- other constant functions are optimized out
|
|
EXPLAIN SELECT * FROM x1, x2 WHERE x=1 ORDER BY abs(5);
|
|
|
|
|
|
-- other constant functions are optimized out
|
|
EXPLAIN SELECT * FROM x1, x2 WHERE x=1 ORDER BY abs(5);
|
|
|
|
|
|
CREATE TABLE t12(x INTEGER PRIMARY KEY, y INT, z CHAR(100));
|
|
CREATE INDEX t12y ON t12(y);
|
|
EXPLAIN QUERY PLAN
|
|
SELECT a.x, b.x
|
|
FROM t12 AS a JOIN t12 AS b ON a.y=b.x
|
|
WHERE (b.x=$abc OR b.y=$abc);
|
|
|
|
|
|
CREATE TABLE t13(a,b);
|
|
CREATE INDEX t13a ON t13(a);
|
|
INSERT INTO t13 VALUES(4,5);
|
|
SELECT * FROM t13 WHERE (1=2 AND a=3) OR a=4;
|
|
|
|
|
|
CREATE TABLE t14a(x INTEGER PRIMARY KEY);
|
|
INSERT INTO t14a(x) VALUES(1),(2),(3),(4);
|
|
CREATE TABLE t14b(y INTEGER PRIMARY KEY);
|
|
INSERT INTO t14b(y) VALUES(1);
|
|
SELECT x FROM t14a WHERE x NOT IN (SELECT x FROM t14b);
|
|
|