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Full-coverage testing and documentation for the ANALYZE command. The

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results of analysis are still not loaded or used, however. (CVS 2561)

FossilOrigin-Name: bd7583a5d63412785a9c5de54d25b509da241605
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drh
2005-07-23 02:17:03 +00:00
parent ff2d5ea408
commit e6e049694d
9 changed files with 305 additions and 32 deletions
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test/analyze.test Normal file
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# 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 1.1 2005/07/23 02:17:03 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 {
catchsql {
ANALYZE
}
} {0 {}}
do_test analyze-1.6 {
execsql {
SELECT count(*) FROM sqlite_master WHERE name='sqlite_stat1'
}
} {1}
do_test analyze-1.7 {
execsql {
SELECT * FROM sqlite_stat1
}
} {}
do_test analyze-1.8 {
catchsql {
ANALYZE main
}
} {0 {}}
do_test analyze-1.9 {
execsql {
SELECT * FROM sqlite_stat1
}
} {}
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 t1i2 1 t1i3 {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 t1i2 1 t1i3 {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 3 t1i2 2 t1i3 {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 3 t1i2 2 t1i3 {3 1} t2i1 3 t2i2 2 t2i3 {3 1}}
do_test analyze-3.5 {
execsql {
DROP INDEX t2i3;
ANALYZE t1;
SELECT idx, stat FROM sqlite_stat1 ORDER BY idx;
}
} {t1i1 3 t1i2 2 t1i3 {3 1} t2i1 3 t2i2 2 t2i3 {3 1}}
do_test analyze-3.6 {
execsql {
ANALYZE t2;
SELECT idx, stat FROM sqlite_stat1 ORDER BY idx;
}
} {t1i1 3 t1i2 2 t1i3 {3 1} t2i1 3 t2i2 2}
do_test analyze-3.7 {
execsql {
DROP INDEX t2i2;
ANALYZE t2;
SELECT idx, stat FROM sqlite_stat1 ORDER BY idx;
}
} {t1i1 3 t1i2 2 t1i3 {3 1}}
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;
ANALYZE;
SELECT idx, stat FROM sqlite_stat1 ORDER BY idx;
}
} {t3i1 3 t3i2 {3 1 1 1} t3i3 {5 2 1 1}}
finish_test