mirror of
https://github.com/tursodatabase/libsql.git
synced 2024-12-15 19:09:41 +00:00
142 lines
3.0 KiB
Plaintext
142 lines
3.0 KiB
Plaintext
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CREATE TABLE t1(a,b,c);
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CREATE INDEX t1bc ON t1(b,c);
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EXPLAIN QUERY PLAN
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SELECT DISTINCT a, b, c FROM t1 WHERE a=0;
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EXPLAIN QUERY PLAN
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SELECT DISTINCT a, c, b FROM t1 WHERE a=0;
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EXPLAIN QUERY PLAN
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SELECT DISTINCT a, c, b FROM t1 WHERE a='xyz' COLLATE nocase;
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EXPLAIN QUERY PLAN
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SELECT DISTINCT a COLLATE nocase, c, b FROM t1 WHERE a='xyz';
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EXPLAIN QUERY PLAN
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SELECT DISTINCT a COLLATE nocase, c, b FROM t1 WHERE a='xyz' COLLATE nocase;
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EXPLAIN QUERY PLAN
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SELECT DISTINCT b, a, c FROM t1 WHERE a=0;
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EXPLAIN QUERY PLAN
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SELECT DISTINCT b, c, a FROM t1 WHERE a=0;
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EXPLAIN QUERY PLAN
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SELECT DISTINCT c, a, b FROM t1 WHERE a=0;
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EXPLAIN QUERY PLAN
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SELECT DISTINCT c, b, a FROM t1 WHERE a=0;
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EXPLAIN QUERY PLAN
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SELECT DISTINCT c, b, a FROM t1 WHERE +a=0;
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CREATE TABLE t2(a,b,c);
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CREATE INDEX t2bc ON t2(b,c);
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ANALYZE;
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INSERT INTO sqlite_stat1 VALUES('t1','t1bc','1000000 10 9');
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INSERT INTO sqlite_stat1 VALUES('t2','t2bc','100 10 5');
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ANALYZE sqlite_master;
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EXPLAIN QUERY PLAN
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SELECT * FROM t2 WHERE a=0 ORDER BY a, b, c;
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE likelihood(a=0, 0.03) ORDER BY a, b, c;
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE +a=0 ORDER BY a, b, c;
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a=0 ORDER BY b, a, c;
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a=0 ORDER BY b, c, a;
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a=0 ORDER BY a, c, b;
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a=0 ORDER BY c, a, b;
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EXPLAIN QUERY PLAN
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SELECT * FROM t1 WHERE a=0 ORDER BY c, b, a;
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CREATE TABLE t3(a INTEGER PRIMARY KEY, b, c, d, e, f);
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CREATE INDEX t3bcde ON t3(b, c, d, e);
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EXPLAIN QUERY PLAN
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SELECT a FROM t3 WHERE b=2 AND c=3 ORDER BY d DESC, e DESC, b, c, a DESC;
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DROP TABLE t3;
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CREATE TABLE t3(a INTEGER PRIMARY KEY, b, c, d, e, f) WITHOUT rowid;
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CREATE INDEX t3bcde ON t3(b, c, d, e);
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EXPLAIN QUERY PLAN
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SELECT a FROM t3 WHERE b=2 AND c=3 ORDER BY d DESC, e DESC, b, c, a DESC;
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CREATE TABLE t4(b COLLATE nocase);
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INSERT INTO t4 VALUES('abc');
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INSERT INTO t4 VALUES('ABC');
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INSERT INTO t4 VALUES('aBC');
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SELECT * FROM t4 ORDER BY b COLLATE binary
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SELECT * FROM t4 WHERE b='abc' ORDER BY b COLLATE binary
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CREATE TABLE Records(typeID INTEGER, key TEXT COLLATE nocase, value TEXT);
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CREATE INDEX RecordsIndex ON Records(typeID, key, value);
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explain query plan
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SELECT typeID, key, value FROM Records
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WHERE typeID = 2 AND key = 'x'
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ORDER BY key, value;
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explain query plan
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SELECT typeID, key, value FROM Records
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WHERE typeID = 2 AND (key = 'x' COLLATE binary)
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ORDER BY key, value;
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explain query plan
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SELECT typeID, key, value FROM Records
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WHERE typeID = 2
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ORDER BY key, value;
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CREATE TABLE t5(a INTEGER PRIMARY KEY, b COLLATE hello, c, d);
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DROP TABLE t1;
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CREATE TABLE t1(a);
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DROP TABLE t2;
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CREATE TABLE t2(b INTEGER PRIMARY KEY, c INT);
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SELECT DISTINCT *
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FROM t1 LEFT JOIN t2 ON b=c AND b=(SELECT a FROM t1)
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WHERE c>10;
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