mirror of
https://github.com/tursodatabase/libsql.git
synced 2024-12-15 22:39:05 +00:00
160 lines
3.7 KiB
Plaintext
160 lines
3.7 KiB
Plaintext
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DROP TABLE IF EXISTS t3;
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CREATE TABLE t3(a INTEGER);
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INSERT INTO t3 VALUES(NULL), (10), (30), (20), (NULL);
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CREATE TABLE t2(a, b, c);
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CREATE INDEX i2 ON t2(a, b);
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INSERT INTO t2 VALUES(1, 1, 1);
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INSERT INTO t2 VALUES(1, NULL, 2);
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INSERT INTO t2 VALUES(1, NULL, 3);
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INSERT INTO t2 VALUES(1, 4, 4);
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SELECT * FROM t2 WHERE a=1 ORDER BY b NULLS LAST
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SELECT * FROM t2 WHERE a=1 ORDER BY b DESC NULLS FIRST
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CREATE TABLE t1(a, b, c, d, UNIQUE (b));
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CREATE TABLE first(nulls, last);
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INSERT INTO first(last, nulls) VALUES(100,200), (300,400), (200,300);
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SELECT * FROM first ORDER BY nulls;
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CREATE TABLE tx(a INTEGER PRIMARY KEY, b, c);
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CREATE INDEX i1 ON tx(b);
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INSERT INTO tx VALUES(1, 1, 1);
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INSERT INTO tx VALUES(2, NULL, 2);
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INSERT INTO tx VALUES(3, 3, 3);
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INSERT INTO tx VALUES(4, NULL, 4);
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INSERT INTO tx VALUES(5, 5, 5);
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CREATE VIRTUAL TABLE te USING echo(tx);
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SELECT * FROM tx ORDER BY b NULLS FIRST;
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SELECT * FROM te ORDER BY b NULLS FIRST;
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SELECT * FROM tx ORDER BY b NULLS LAST;
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SELECT * FROM te ORDER BY b NULLS LAST;
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CREATE TABLE t4(a, b, c);
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INSERT INTO t4 VALUES(1, 1, 11);
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INSERT INTO t4 VALUES(1, 2, 12);
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INSERT INTO t4 VALUES(1, NULL, 1);
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INSERT INTO t4 VALUES(2, NULL, 1);
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INSERT INTO t4 VALUES(2, 2, 12);
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INSERT INTO t4 VALUES(2, 1, 11);
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INSERT INTO t4 VALUES(3, NULL, 1);
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INSERT INTO t4 VALUES(3, 2, 12);
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INSERT INTO t4 VALUES(3, NULL, 3);
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SELECT * FROM t4 WHERE a IN (1, 2, 3) ORDER BY a, b NULLS LAST
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CREATE INDEX t4ab ON t4(a, b);
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SELECT * FROM t4 WHERE a IN (1, 2, 3) ORDER BY a, b NULLS LAST
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SELECT * FROM t4 WHERE a IN (1, 2, 3) ORDER BY a DESC, b DESC NULLS FIRST
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CREATE TABLE t5(a, b, c);
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WITH s(i) AS (
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VALUES(1) UNION ALL SELECT i+1 FROM s WHERE i<200
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)
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INSERT INTO t5 SELECT i%2, CASE WHEN (i%10)==0 THEN NULL ELSE i END, i FROM s;
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CREATE INDEX t5ab ON t5(a, b, c);
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SELECT a,b FROM t5 WHERE a=1 ORDER BY b NULLS LAST, c;
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SELECT a,b FROM t5 WHERE a=1 ORDER BY b DESC NULLS FIRST, c DESC
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CREATE TABLE t71(a, b, c);
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CREATE INDEX t71abc ON t71(a, b, c);
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SELECT * FROM t71 WHERE a=1 AND b=2 ORDER BY c NULLS LAST;
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SELECT * FROM t71 WHERE a=1 AND b=2 ORDER BY c DESC NULLS FIRST;
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SELECT * FROM t71 ORDER BY a NULLS LAST;
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SELECT * FROM t71 ORDER BY a DESC NULLS FIRST;
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CREATE TABLE v0 (c1, c2, c3);
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CREATE INDEX v3 ON v0 (c1, c2, c3);
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ANALYZE sqlite_master;
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INSERT INTO sqlite_stat1 VALUES('v0','v3','648 324 81');
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ANALYZE sqlite_master;
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INSERT INTO v0 VALUES
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(1, 10, 'b'),
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(1, 10, 'd'),
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(1, 10, NULL),
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(2, 10, 'a'),
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(2, 10, NULL),
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(1, 10, 'c'),
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(2, 10, 'b'),
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(1, 10, 'a'),
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(1, 10, NULL),
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(2, 10, NULL),
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(2, 10, 'd'),
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(2, 10, 'c');
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SELECT c1, c2, ifnull(c3, 'NULL') FROM v0
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WHERE c2=10 ORDER BY c1, c3 NULLS LAST
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CREATE TABLE t1(x);
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INSERT INTO t1(x) VALUES('X');
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CREATE TABLE t2(c, d);
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CREATE INDEX t2dc ON t2(d, c);
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SELECT c FROM t1 LEFT JOIN t2 ON d=NULL ORDER BY d, c NULLS LAST;
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INSERT INTO t2(c,d) VALUES(5,'X'),(6,'Y'),(7,'Z'),(3,'A'),(4,'B');
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SELECT c FROM t1 LEFT JOIN t2 ON d=x ORDER BY d, c NULLS LAST;
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UPDATE t2 SET d='X';
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UPDATE t2 SET c=NULL WHERE c=6;
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SELECT c FROM t1 LEFT JOIN t2 ON d=x ORDER BY d NULLS FIRST, c NULLS FIRST;
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SELECT c FROM t1 LEFT JOIN t2 ON d=x ORDER BY d NULLS LAST, c NULLS LAST;
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SELECT c FROM t1 LEFT JOIN t2 ON d=x ORDER BY c NULLS LAST;
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SELECT c FROM t1 LEFT JOIN t2 ON d=x ORDER BY +d NULLS LAST, +c NULLS LAST;
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INSERT INTO t1(x) VALUES(NULL),('Y');
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SELECT x, c, d, '|' FROM t1 LEFT JOIN t2 ON d=x
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ORDER BY d NULLS LAST, c NULLS LAST;
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SELECT x, c, d, '|' FROM t1 LEFT JOIN t2 ON d=x
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ORDER BY +d NULLS LAST, +c NULLS LAST;
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