# 2005 July 22
#
# 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.
# This file implements tests for the ANALYZE command.
#
# $Id: analyze.test,v 1.9 2008/08/11 18:44:58 drh Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
# There is nothing to test if ANALYZE is disable for this build.
#
ifcapable {!analyze} {
finish_test
return
}
# Basic sanity checks.
#
do_test analyze-1.1 {
catchsql {
ANALYZE no_such_table
}
} {1 {no such table: no_such_table}}
do_test analyze-1.2 {
execsql {
SELECT count(*) FROM sqlite_master WHERE name='sqlite_stat1'
}
} {0}
do_test analyze-1.3 {
catchsql {
ANALYZE no_such_db.no_such_table
}
} {1 {unknown database no_such_db}}
do_test analyze-1.4 {
execsql {
SELECT count(*) FROM sqlite_master WHERE name='sqlite_stat1'
}
} {0}
do_test analyze-1.5.1 {
catchsql {
ANALYZE
}
} {0 {}}
do_test analyze-1.5.2 {
catchsql {
PRAGMA empty_result_callbacks=1;
ANALYZE
}
} {0 {}}
do_test analyze-1.6 {
execsql {
SELECT count(*) FROM sqlite_master WHERE name='sqlite_stat1'
}
} {1}
do_test analyze-1.6.2 {
catchsql {
CREATE INDEX stat1idx ON sqlite_stat1(idx);
}
} {1 {table sqlite_stat1 may not be indexed}}
do_test analyze-1.6.3 {
catchsql {
CREATE INDEX main.stat1idx ON SQLite_stat1(idx);
}
} {1 {table sqlite_stat1 may not be indexed}}
do_test analyze-1.7 {
execsql {
SELECT * FROM sqlite_stat1 WHERE idx NOT NULL
}
} {}
do_test analyze-1.8 {
catchsql {
ANALYZE main
}
} {0 {}}
do_test analyze-1.9 {
execsql {
SELECT * FROM sqlite_stat1 WHERE idx NOT NULL
}
} {}
do_test analyze-1.10 {
catchsql {
CREATE TABLE t1(a,b);
ANALYZE main.t1;
}
} {0 {}}
do_test analyze-1.11 {
execsql {
SELECT * FROM sqlite_stat1
}
} {}
do_test analyze-1.12 {
catchsql {
ANALYZE t1;
}
} {0 {}}
do_test analyze-1.13 {
execsql {
SELECT * FROM sqlite_stat1
}
} {}
# Create some indices that can be analyzed. But do not yet add
# data. Without data in the tables, no analysis is done.
#
do_test analyze-2.1 {
execsql {
CREATE INDEX t1i1 ON t1(a);
ANALYZE main.t1;
SELECT * FROM sqlite_stat1 ORDER BY idx;
}
} {}
do_test analyze-2.2 {
execsql {
CREATE INDEX t1i2 ON t1(b);
ANALYZE t1;
SELECT * FROM sqlite_stat1 ORDER BY idx;
}
} {}
do_test analyze-2.3 {
execsql {
CREATE INDEX t1i3 ON t1(a,b);
ANALYZE main;
SELECT * FROM sqlite_stat1 ORDER BY idx;
}
} {}
# Start adding data to the table. Verify that the analysis
# is done correctly.
#
do_test analyze-3.1 {
execsql {
INSERT INTO t1 VALUES(1,2);
INSERT INTO t1 VALUES(1,3);
ANALYZE main.t1;
SELECT idx, stat FROM sqlite_stat1 ORDER BY idx;
}
} {t1i1 {2 2} t1i2 {2 1} t1i3 {2 2 1}}
do_test analyze-3.2 {
execsql {
INSERT INTO t1 VALUES(1,4);
INSERT INTO t1 VALUES(1,5);
ANALYZE t1;
SELECT idx, stat FROM sqlite_stat1 ORDER BY idx;
}
} {t1i1 {4 4} t1i2 {4 1} t1i3 {4 4 1}}
do_test analyze-3.3 {
execsql {
INSERT INTO t1 VALUES(2,5);
ANALYZE main;
SELECT idx, stat FROM sqlite_stat1 ORDER BY idx;
}
} {t1i1 {5 3} t1i2 {5 2} t1i3 {5 3 1}}
do_test analyze-3.4 {
execsql {
CREATE TABLE t2 AS SELECT * FROM t1;
CREATE INDEX t2i1 ON t2(a);
CREATE INDEX t2i2 ON t2(b);
CREATE INDEX t2i3 ON t2(a,b);
ANALYZE;
SELECT idx, stat FROM sqlite_stat1 ORDER BY idx;
}
} {t1i1 {5 3} t1i2 {5 2} t1i3 {5 3 1} t2i1 {5 3} t2i2 {5 2} t2i3 {5 3 1}}
do_test analyze-3.5 {
execsql {
DROP INDEX t2i3;
ANALYZE t1;
SELECT idx, stat FROM sqlite_stat1 ORDER BY idx;
}
} {t1i1 {5 3} t1i2 {5 2} t1i3 {5 3 1} t2i1 {5 3} t2i2 {5 2}}
do_test analyze-3.6 {
execsql {
ANALYZE t2;
SELECT idx, stat FROM sqlite_stat1 ORDER BY idx;
}
} {t1i1 {5 3} t1i2 {5 2} t1i3 {5 3 1} t2i1 {5 3} t2i2 {5 2}}
do_test analyze-3.7 {
execsql {
DROP INDEX t2i2;
ANALYZE t2;
SELECT idx, stat FROM sqlite_stat1 ORDER BY idx;
}
} {t1i1 {5 3} t1i2 {5 2} t1i3 {5 3 1} t2i1 {5 3}}
do_test analyze-3.8 {
execsql {
CREATE TABLE t3 AS SELECT a, b, rowid AS c, 'hi' AS d FROM t1;
CREATE INDEX t3i1 ON t3(a);
CREATE INDEX t3i2 ON t3(a,b,c,d);
CREATE INDEX t3i3 ON t3(d,b,c,a);
DROP TABLE t1;
DROP TABLE t2;
SELECT idx, stat FROM sqlite_stat1 ORDER BY idx;
}
} {}
do_test analyze-3.9 {
execsql {
ANALYZE;
SELECT idx, stat FROM sqlite_stat1 ORDER BY idx;
}
} {t3i1 {5 3} t3i2 {5 3 1 1 1} t3i3 {5 5 2 1 1}}
do_test analyze-3.10 {
execsql {
CREATE TABLE [silly " name](a, b, c);
CREATE INDEX 'foolish '' name' ON [silly " name](a, b);
CREATE INDEX 'another foolish '' name' ON [silly " name](c);
INSERT INTO [silly " name] VALUES(1, 2, 3);
INSERT INTO [silly " name] VALUES(4, 5, 6);
ANALYZE;
SELECT idx, stat FROM sqlite_stat1 ORDER BY idx;
}
} {{another foolish ' name} {2 1} {foolish ' name} {2 1 1} t3i1 {5 3} t3i2 {5 3 1 1 1} t3i3 {5 5 2 1 1}}
do_test analyze-3.11 {
execsql {
DROP INDEX "foolish ' name";
SELECT idx, stat FROM sqlite_stat1 ORDER BY idx;
}
} {{another foolish ' name} {2 1} t3i1 {5 3} t3i2 {5 3 1 1 1} t3i3 {5 5 2 1 1}}
do_test analyze-3.11 {
execsql {
DROP TABLE "silly "" name";
SELECT idx, stat FROM sqlite_stat1 ORDER BY idx;
}
} {t3i1 {5 3} t3i2 {5 3 1 1 1} t3i3 {5 5 2 1 1}}
# Try corrupting the sqlite_stat1 table and make sure the
# database is still able to function.
#
do_test analyze-4.0 {
sqlite3 db2 test.db
db2 eval {
CREATE TABLE t4(x,y,z);
CREATE INDEX t4i1 ON t4(x);
CREATE INDEX t4i2 ON t4(y);
INSERT INTO t4 SELECT a,b,c FROM t3;
}
db2 close
db close
sqlite3 db test.db
execsql {
ANALYZE;
SELECT idx, stat FROM sqlite_stat1 ORDER BY idx;
}
} {t3i1 {5 3} t3i2 {5 3 1 1 1} t3i3 {5 5 2 1 1} t4i1 {5 3} t4i2 {5 2}}
do_test analyze-4.1 {
execsql {
PRAGMA writable_schema=on;
INSERT INTO sqlite_stat1 VALUES(null,null,null);
PRAGMA writable_schema=off;
}
db close
sqlite3 db test.db
execsql {
SELECT * FROM t4 WHERE x=1234;
}
} {}
do_test analyze-4.2 {
execsql {
PRAGMA writable_schema=on;
DELETE FROM sqlite_stat1;
INSERT INTO sqlite_stat1 VALUES('t4','t4i1','nonsense');
INSERT INTO sqlite_stat1 VALUES('t4','t4i2','120897349817238741092873198273409187234918720394817209384710928374109827172901827349871928741910');
PRAGMA writable_schema=off;
}
db close
sqlite3 db test.db
execsql {
SELECT * FROM t4 WHERE x=1234;
}
} {}
do_test analyze-4.3 {
execsql {
INSERT INTO sqlite_stat1 VALUES('t4','xyzzy','0 1 2 3');
}
db close
sqlite3 db test.db
execsql {
SELECT * FROM t4 WHERE x=1234;
}
} {}
# Verify that DROP TABLE and DROP INDEX remove entries from the
# sqlite_stat1, sqlite_stat3 and sqlite_stat4 tables.
#
do_test analyze-5.0 {
execsql {
DELETE FROM t3;
DELETE FROM t4;
INSERT INTO t3 VALUES(1,2,3,4);
INSERT INTO t3 VALUES(5,6,7,8);
INSERT INTO t3 SELECT a+8, b+8, c+8, d+8 FROM t3;
INSERT INTO t3 SELECT a+16, b+16, c+16, d+16 FROM t3;
INSERT INTO t3 SELECT a+32, b+32, c+32, d+32 FROM t3;
INSERT INTO t3 SELECT a+64, b+64, c+64, d+64 FROM t3;
INSERT INTO t4 SELECT a, b, c FROM t3;
ANALYZE;
SELECT DISTINCT idx FROM sqlite_stat1 ORDER BY 1;
SELECT DISTINCT tbl FROM sqlite_stat1 ORDER BY 1;
}
} {t3i1 t3i2 t3i3 t4i1 t4i2 t3 t4}
ifcapable stat4||stat3 {
ifcapable stat4 {set stat sqlite_stat4} else {set stat sqlite_stat3}
do_test analyze-5.1 {
execsql "
SELECT DISTINCT idx FROM $stat ORDER BY 1;
SELECT DISTINCT tbl FROM $stat ORDER BY 1;
"
} {t3i1 t3i2 t3i3 t4i1 t4i2 t3 t4}
}
do_test analyze-5.2 {
execsql {
DROP INDEX t3i2;
SELECT DISTINCT idx FROM sqlite_stat1 ORDER BY 1;
SELECT DISTINCT tbl FROM sqlite_stat1 ORDER BY 1;
}
} {t3i1 t3i3 t4i1 t4i2 t3 t4}
ifcapable stat4||stat3 {
do_test analyze-5.3 {
execsql "
SELECT DISTINCT idx FROM $stat ORDER BY 1;
SELECT DISTINCT tbl FROM $stat ORDER BY 1;
"
} {t3i1 t3i3 t4i1 t4i2 t3 t4}
}
do_test analyze-5.4 {
execsql {
DROP TABLE t3;
SELECT DISTINCT idx FROM sqlite_stat1 ORDER BY 1;
SELECT DISTINCT tbl FROM sqlite_stat1 ORDER BY 1;
}
} {t4i1 t4i2 t4}
ifcapable stat4||stat3 {
do_test analyze-5.5 {
execsql "
SELECT DISTINCT idx FROM $stat ORDER BY 1;
SELECT DISTINCT tbl FROM $stat ORDER BY 1;
"
} {t4i1 t4i2 t4}
}
# This test corrupts the database file so it must be the last test
# in the series.
#
do_test analyze-99.1 {
execsql {
PRAGMA writable_schema=on;
UPDATE sqlite_master SET sql='nonsense' WHERE name='sqlite_stat1';
}
db close
catch { sqlite3 db test.db }
catchsql {
ANALYZE
}
} {1 {malformed database schema (sqlite_stat1) - near "nonsense": syntax error}}
finish_test