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252 lines
6.1 KiB
Plaintext
252 lines
6.1 KiB
Plaintext
# 2009-02-24
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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# This file implements regression tests for SQLite library. The
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# focus of this file is testing "SELECT count(*)" statements.
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#
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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# Test plan:
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#
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# count-0.*: Make sure count(*) works on an empty database. (Ticket #3774)
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#
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# count-1.*: Test that the OP_Count instruction appears to work on both
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# tables and indexes. Test both when they contain 0 entries,
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# when all entries are on the root page, and when the b-tree
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# forms a structure 2 and 3 levels deep.
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#
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#
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do_test count-0.1 {
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db eval {
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SELECT count(*) FROM sqlite_master;
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}
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} {0}
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set iTest 0
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foreach zIndex [list {
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/* no-op */
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} {
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CREATE INDEX i1 ON t1(a);
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}] {
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incr iTest
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do_test count-1.$iTest.1 {
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execsql {
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DROP TABLE IF EXISTS t1;
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CREATE TABLE t1(a, b);
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}
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execsql $zIndex
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execsql { SELECT count(*) FROM t1 }
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} {0}
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do_test count-1.$iTest.2 {
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execsql {
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INSERT INTO t1 VALUES(1, 2);
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INSERT INTO t1 VALUES(3, 4);
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SELECT count(*) FROM t1;
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}
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} {2}
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do_test count-1.$iTest.3 {
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execsql {
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INSERT INTO t1 SELECT * FROM t1; -- 4
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INSERT INTO t1 SELECT * FROM t1; -- 8
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INSERT INTO t1 SELECT * FROM t1; -- 16
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INSERT INTO t1 SELECT * FROM t1; -- 32
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INSERT INTO t1 SELECT * FROM t1; -- 64
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INSERT INTO t1 SELECT * FROM t1; -- 128
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INSERT INTO t1 SELECT * FROM t1; -- 256
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SELECT count(*) FROM t1;
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}
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} {256}
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do_test count-1.$iTest.4 {
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execsql {
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INSERT INTO t1 SELECT * FROM t1; -- 512
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INSERT INTO t1 SELECT * FROM t1; -- 1024
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INSERT INTO t1 SELECT * FROM t1; -- 2048
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INSERT INTO t1 SELECT * FROM t1; -- 4096
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SELECT count(*) FROM t1;
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}
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} {4096}
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do_test count-1.$iTest.5 {
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execsql {
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BEGIN;
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INSERT INTO t1 SELECT * FROM t1; -- 8192
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INSERT INTO t1 SELECT * FROM t1; -- 16384
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INSERT INTO t1 SELECT * FROM t1; -- 32768
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INSERT INTO t1 SELECT * FROM t1; -- 65536
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COMMIT;
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SELECT count(*) FROM t1;
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}
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} {65536}
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}
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proc uses_op_count {sql} {
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if {[lsearch [execsql "EXPLAIN $sql"] Count]>=0} {
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return 1;
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}
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return 0
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}
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do_test count-2.1 {
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execsql {
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CREATE TABLE t2(a, b);
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}
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uses_op_count {SELECT count(*) FROM t2}
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} {1}
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do_test count-2.2 {
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catchsql {SELECT count(DISTINCT *) FROM t2}
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} {1 {near "*": syntax error}}
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do_test count-2.3 {
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uses_op_count {SELECT count(DISTINCT a) FROM t2}
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} {0}
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do_test count-2.4 {
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uses_op_count {SELECT count(a) FROM t2}
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} {0}
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do_test count-2.5 {
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uses_op_count {SELECT count() FROM t2}
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} {1}
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do_test count-2.6 {
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catchsql {SELECT count(DISTINCT) FROM t2}
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} {1 {DISTINCT aggregates must have exactly one argument}}
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do_test count-2.7 {
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uses_op_count {SELECT count(*)+1 FROM t2}
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} {0}
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do_test count-2.8 {
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uses_op_count {SELECT count(*) FROM t2 WHERE a IS NOT NULL}
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} {0}
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do_execsql_test count-2.9a {
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SELECT count(*) FROM t2 HAVING count(*)>1;
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} {}
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do_execsql_test count-2.9b {
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SELECT count(*) FROM t2 HAVING count(*)<10;
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} {0}
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do_test count-2.10 {
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uses_op_count {SELECT count(*) FROM (SELECT 1)}
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} {0}
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do_test count-2.11 {
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execsql { CREATE VIEW v1 AS SELECT 1 AS a }
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uses_op_count {SELECT count(*) FROM v1}
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} {0}
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do_test count-2.12 {
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uses_op_count {SELECT count(*), max(a) FROM t2}
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} {0}
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do_test count-2.13 {
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uses_op_count {SELECT count(*) FROM t1, t2}
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} {0}
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ifcapable vtab {
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register_echo_module [sqlite3_connection_pointer db]
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do_test count-2.14 {
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execsql { CREATE VIRTUAL TABLE techo USING echo(t1); }
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uses_op_count {SELECT count(*) FROM techo}
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} {0}
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}
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do_test count-3.1 {
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execsql {
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CREATE TABLE t3(a, b);
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SELECT a FROM (SELECT count(*) AS a FROM t3) WHERE a==0;
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}
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} {0}
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do_test count-3.2 {
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execsql {
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SELECT a FROM (SELECT count(*) AS a FROM t3) WHERE a==1;
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}
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} {}
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do_test count-4.1 {
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execsql {
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CREATE TABLE t4(a, b);
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INSERT INTO t4 VALUES('a', 'b');
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CREATE INDEX t4i1 ON t4(b, a);
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SELECT count(*) FROM t4;
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}
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} {1}
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do_test count-4.2 {
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execsql {
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CREATE INDEX t4i2 ON t4(b);
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SELECT count(*) FROM t4;
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}
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} {1}
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do_test count-4.3 {
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execsql {
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DROP INDEX t4i1;
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CREATE INDEX t4i1 ON t4(b, a);
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SELECT count(*) FROM t4;
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}
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} {1}
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do_execsql_test count-5.1 {
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CREATE TABLE t5(a TEXT PRIMARY KEY, b VARCHAR(50)) WITHOUT ROWID;
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INSERT INTO t5 VALUES('bison','jazz');
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SELECT count(*) FROM t5;
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} {1}
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do_catchsql_test count-6.1 {
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CREATE TABLE t6(x);
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SELECT count(DISTINCT) FROM t6 GROUP BY x;
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} {1 {DISTINCT aggregates must have exactly one argument}}
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# 2020-05-08.
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# The count() optimization should honor the NOT INDEXED clause
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#
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reset_db
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do_execsql_test count-7.1 {
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CREATE TABLE t1(a INTEGER PRIMARY KEY, b INT, c VARCHAR(1000));
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CREATE INDEX t1b ON t1(b);
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INSERT INTO t1(a,b,c) values(1,2,'count.test cases for NOT INDEXED');
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ANALYZE;
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UPDATE sqlite_stat1 SET stat='1000000 10' WHERE idx='t1b';
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ANALYZE sqlite_master;
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}
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do_eqp_test count-7.2 {
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SELECT count(1) FROM t1;
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} {
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QUERY PLAN
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`--SCAN t1 USING COVERING INDEX t1b
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}
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do_eqp_test count-7.3 {
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SELECT count(1) FROM t1 NOT INDEXED
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} {
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QUERY PLAN
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`--SCAN t1
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}
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do_eqp_test count-7.3 {
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SELECT count(*) FROM t1;
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} {
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QUERY PLAN
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`--SCAN t1 USING COVERING INDEX t1b
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}
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do_eqp_test count-7.4 {
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SELECT count(*) FROM t1 NOT INDEXED
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} {
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QUERY PLAN
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`--SCAN t1
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}
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do_execsql_test count-8.0 {
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CREATE TABLE t7(a INT,b TEXT,c BLOB,d REAL);
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CREATE TABLE t8(a INT,b TEXT,c BLOB,d REAL);
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CREATE INDEX t8a ON t8(a);
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}
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do_catchsql_test count-8.1 {
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SELECT * FROM t8 WHERE (a, b) IN (
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SELECT count(t8.b), count(*) FROM t7 AS ra0 ORDER BY count(*)
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) AND t8.b=0;
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} {1 {misuse of aggregate: count()}}
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finish_test
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