434 lines
11 KiB
Plaintext
434 lines
11 KiB
Plaintext
# 2005 February 18
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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 script is testing that SQLite can handle a subtle
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# file format change that may be used in the future to implement
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# "ALTER TABLE ... ADD COLUMN".
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#
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# $Id: alter2.test,v 1.6 2007/01/04 14:36:02 drh Exp $
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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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# We have to have pragmas in order to do this test
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ifcapable {!pragma} return
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# These tests do not work if there is a codec. The
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# btree_open command does not know how to handle codecs.
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#
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#if {[catch {sqlite3 -has_codec} r] || $r} return
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# The file format change affects the way row-records stored in tables (but
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# not indices) are interpreted. Before version 3.1.3, a row-record for a
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# table with N columns was guaranteed to contain exactly N fields. As
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# of version 3.1.3, the record may contain up to N fields. In this case
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# the M fields that are present are the values for the left-most M
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# columns. The (N-M) rightmost columns contain NULL.
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#
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# If any records in the database contain less fields than their table
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# has columns, then the file-format meta value should be set to (at least) 2.
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#
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# This procedure sets the value of the file-format in file 'test.db'
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# to $newval. Also, the schema cookie is incremented.
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#
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proc set_file_format {newval} {
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set bt [btree_open test.db 10 0]
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btree_begin_transaction $bt
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set meta [btree_get_meta $bt]
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lset meta 2 $newval ;# File format
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lset meta 1 [expr [lindex $meta 1]+1] ;# Schema cookie
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eval "btree_update_meta $bt $meta"
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btree_commit $bt
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btree_close $bt
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}
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# This procedure returns the value of the file-format in file 'test.db'.
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#
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proc get_file_format {{fname test.db}} {
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set bt [btree_open $fname 10 0]
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set meta [btree_get_meta $bt]
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btree_close $bt
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lindex $meta 2
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}
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# This procedure sets the SQL statement stored for table $tbl in the
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# sqlite_master table of file 'test.db' to $sql. Also set the file format
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# to the supplied value. This is 2 if the added column has a default that is
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# NULL, or 3 otherwise.
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#
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proc alter_table {tbl sql {file_format 2}} {
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sqlite3 dbat test.db
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dbat eval {
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PRAGMA writable_schema = 1;
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UPDATE sqlite_master SET sql = $sql WHERE name = $tbl AND type = 'table';
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PRAGMA writable_schema = 0;
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}
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dbat close
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set_file_format 2
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}
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#-----------------------------------------------------------------------
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# Some basic tests to make sure short rows are handled.
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#
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do_test alter2-1.1 {
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execsql {
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CREATE TABLE abc(a, b);
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INSERT INTO abc VALUES(1, 2);
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INSERT INTO abc VALUES(3, 4);
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INSERT INTO abc VALUES(5, 6);
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}
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} {}
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do_test alter2-1.2 {
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# ALTER TABLE abc ADD COLUMN c;
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alter_table abc {CREATE TABLE abc(a, b, c);}
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} {}
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do_test alter2-1.3 {
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execsql {
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SELECT * FROM abc;
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}
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} {1 2 {} 3 4 {} 5 6 {}}
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do_test alter2-1.4 {
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execsql {
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UPDATE abc SET c = 10 WHERE a = 1;
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SELECT * FROM abc;
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}
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} {1 2 10 3 4 {} 5 6 {}}
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do_test alter2-1.5 {
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execsql {
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CREATE INDEX abc_i ON abc(c);
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}
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} {}
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do_test alter2-1.6 {
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execsql {
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SELECT c FROM abc ORDER BY c;
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}
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} {{} {} 10}
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do_test alter2-1.7 {
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execsql {
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SELECT * FROM abc WHERE c = 10;
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}
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} {1 2 10}
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do_test alter2-1.8 {
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execsql {
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SELECT sum(a), c FROM abc GROUP BY c;
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}
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} {8 {} 1 10}
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do_test alter2-1.9 {
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# ALTER TABLE abc ADD COLUMN d;
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alter_table abc {CREATE TABLE abc(a, b, c, d);}
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execsql { SELECT * FROM abc; }
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execsql {
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UPDATE abc SET d = 11 WHERE c IS NULL AND a<4;
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SELECT * FROM abc;
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}
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} {1 2 10 {} 3 4 {} 11 5 6 {} {}}
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do_test alter2-1.10 {
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execsql {
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SELECT typeof(d) FROM abc;
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}
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} {null integer null}
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do_test alter2-1.99 {
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execsql {
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DROP TABLE abc;
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}
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} {}
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#-----------------------------------------------------------------------
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# Test that views work when the underlying table structure is changed.
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#
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ifcapable view {
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do_test alter2-2.1 {
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execsql {
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CREATE TABLE abc2(a, b, c);
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INSERT INTO abc2 VALUES(1, 2, 10);
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INSERT INTO abc2 VALUES(3, 4, NULL);
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INSERT INTO abc2 VALUES(5, 6, NULL);
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CREATE VIEW abc2_v AS SELECT * FROM abc2;
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SELECT * FROM abc2_v;
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}
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} {1 2 10 3 4 {} 5 6 {}}
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do_test alter2-2.2 {
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# ALTER TABLE abc ADD COLUMN d;
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alter_table abc2 {CREATE TABLE abc2(a, b, c, d);}
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execsql {
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SELECT * FROM abc2_v;
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}
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} {1 2 10 {} 3 4 {} {} 5 6 {} {}}
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do_test alter2-2.3 {
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execsql {
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DROP TABLE abc2;
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DROP VIEW abc2_v;
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}
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} {}
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}
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#-----------------------------------------------------------------------
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# Test that triggers work when a short row is copied to the old.*
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# trigger pseudo-table.
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#
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ifcapable trigger {
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do_test alter2-3.1 {
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execsql {
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CREATE TABLE abc3(a, b);
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CREATE TABLE blog(o, n);
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CREATE TRIGGER abc3_t AFTER UPDATE OF b ON abc3 BEGIN
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INSERT INTO blog VALUES(old.b, new.b);
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END;
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}
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} {}
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do_test alter2-3.2 {
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execsql {
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INSERT INTO abc3 VALUES(1, 4);
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UPDATE abc3 SET b = 2 WHERE b = 4;
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SELECT * FROM blog;
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}
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} {4 2}
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do_test alter2-3.3 {
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execsql {
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INSERT INTO abc3 VALUES(3, 4);
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INSERT INTO abc3 VALUES(5, 6);
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}
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alter_table abc3 {CREATE TABLE abc3(a, b, c);}
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execsql {
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SELECT * FROM abc3;
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}
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} {1 2 {} 3 4 {} 5 6 {}}
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do_test alter2-3.4 {
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execsql {
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UPDATE abc3 SET b = b*2 WHERE a<4;
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SELECT * FROM abc3;
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}
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} {1 4 {} 3 8 {} 5 6 {}}
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do_test alter2-3.5 {
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execsql {
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SELECT * FROM blog;
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}
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} {4 2 2 4 4 8}
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do_test alter2-3.6 {
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execsql {
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CREATE TABLE clog(o, n);
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CREATE TRIGGER abc3_t2 AFTER UPDATE OF c ON abc3 BEGIN
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INSERT INTO clog VALUES(old.c, new.c);
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END;
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UPDATE abc3 SET c = a*2;
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SELECT * FROM clog;
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}
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} {{} 2 {} 6 {} 10}
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}
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#---------------------------------------------------------------------
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# Check that an error occurs if the database is upgraded to a file
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# format that SQLite does not support (in this case 5). Note: The
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# file format is checked each time the schema is read, so changing the
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# file format requires incrementing the schema cookie.
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#
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do_test alter2-4.1 {
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set_file_format 5
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} {}
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do_test alter2-4.2 {
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catchsql {
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SELECT * FROM sqlite_master;
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}
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} {1 {unsupported file format}}
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do_test alter2-4.3 {
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sqlite3_errcode $::DB
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} {SQLITE_ERROR}
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do_test alter2-4.4 {
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set ::DB [sqlite3_connection_pointer db]
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catchsql {
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SELECT * FROM sqlite_master;
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}
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} {1 {unsupported file format}}
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do_test alter2-4.5 {
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sqlite3_errcode $::DB
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} {SQLITE_ERROR}
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#---------------------------------------------------------------------
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# Check that executing VACUUM on a file with file-format version 2
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# resets the file format to 1.
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#
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do_test alter2-5.1 {
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set_file_format 2
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get_file_format
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} {2}
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do_test alter2-5.2 {
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execsql {
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VACUUM;
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}
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} {}
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do_test alter2-5.3 {
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get_file_format
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} {1}
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#---------------------------------------------------------------------
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# Test that when a database with file-format 2 is opened, new
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# databases are still created with file-format 1.
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#
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do_test alter2-6.1 {
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db close
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set_file_format 2
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sqlite3 db test.db
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set ::DB [sqlite3_connection_pointer db]
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get_file_format
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} {2}
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do_test alter2-6.2 {
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file delete -force test2.db-journal
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file delete -force test2.db
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execsql {
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ATTACH 'test2.db' AS aux;
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CREATE TABLE aux.t1(a, b);
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}
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get_file_format test2.db
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} {1}
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do_test alter2-6.3 {
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execsql {
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CREATE TABLE t1(a, b);
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}
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get_file_format
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} {2}
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#---------------------------------------------------------------------
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# Test that types and values for columns added with default values
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# other than NULL work with SELECT statements.
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#
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do_test alter2-7.1 {
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execsql {
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DROP TABLE t1;
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CREATE TABLE t1(a);
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INSERT INTO t1 VALUES(1);
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INSERT INTO t1 VALUES(2);
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INSERT INTO t1 VALUES(3);
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INSERT INTO t1 VALUES(4);
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SELECT * FROM t1;
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}
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} {1 2 3 4}
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do_test alter2-7.2 {
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set sql {CREATE TABLE t1(a, b DEFAULT '123', c INTEGER DEFAULT '123')}
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alter_table t1 $sql 3
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execsql {
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SELECT * FROM t1 LIMIT 1;
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}
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} {1 123 123}
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do_test alter2-7.3 {
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execsql {
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SELECT a, typeof(a), b, typeof(b), c, typeof(c) FROM t1 LIMIT 1;
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}
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} {1 integer 123 text 123 integer}
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do_test alter2-7.4 {
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execsql {
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SELECT a, typeof(a), b, typeof(b), c, typeof(c) FROM t1 LIMIT 1;
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}
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} {1 integer 123 text 123 integer}
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do_test alter2-7.5 {
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set sql {CREATE TABLE t1(a, b DEFAULT -123.0, c VARCHAR(10) default 5)}
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alter_table t1 $sql 3
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execsql {
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SELECT a, typeof(a), b, typeof(b), c, typeof(c) FROM t1 LIMIT 1;
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}
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} {1 integer -123 integer 5 text}
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#-----------------------------------------------------------------------
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# Test that UPDATE trigger tables work with default values, and that when
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# a row is updated the default values are correctly transfered to the
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# new row.
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#
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ifcapable trigger {
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db function set_val {set ::val}
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do_test alter2-8.1 {
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execsql {
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CREATE TRIGGER trig1 BEFORE UPDATE ON t1 BEGIN
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SELECT set_val(
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old.b||' '||typeof(old.b)||' '||old.c||' '||typeof(old.c)||' '||
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new.b||' '||typeof(new.b)||' '||new.c||' '||typeof(new.c)
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);
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END;
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}
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list
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} {}
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}
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do_test alter2-8.2 {
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execsql {
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UPDATE t1 SET c = 10 WHERE a = 1;
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SELECT a, typeof(a), b, typeof(b), c, typeof(c) FROM t1 LIMIT 1;
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}
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} {1 integer -123 integer 10 text}
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ifcapable trigger {
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do_test alter2-8.3 {
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set ::val
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} {-123 integer 5 text -123 integer 10 text}
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}
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#-----------------------------------------------------------------------
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# Test that DELETE trigger tables work with default values, and that when
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# a row is updated the default values are correctly transfered to the
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# new row.
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#
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ifcapable trigger {
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do_test alter2-9.1 {
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execsql {
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CREATE TRIGGER trig2 BEFORE DELETE ON t1 BEGIN
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SELECT set_val(
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old.b||' '||typeof(old.b)||' '||old.c||' '||typeof(old.c)
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);
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END;
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}
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list
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} {}
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do_test alter2-9.2 {
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execsql {
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DELETE FROM t1 WHERE a = 2;
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}
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set ::val
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} {-123 integer 5 text}
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}
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#-----------------------------------------------------------------------
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# Test creating an index on a column added with a default value.
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#
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do_test alter2-10.1 {
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execsql {
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CREATE TABLE t2(a);
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INSERT INTO t2 VALUES('a');
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INSERT INTO t2 VALUES('b');
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INSERT INTO t2 VALUES('c');
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INSERT INTO t2 VALUES('d');
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}
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alter_table t2 {CREATE TABLE t2(a, b DEFAULT X'ABCD', c DEFAULT NULL);} 3
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catchsql {
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SELECT * FROM sqlite_master;
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}
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execsql {
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SELECT quote(a), quote(b), quote(c) FROM t2 LIMIT 1;
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}
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} {'a' X'ABCD' NULL}
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do_test alter2-10.2 {
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execsql {
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CREATE INDEX i1 ON t2(b);
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SELECT a FROM t2 WHERE b = X'ABCD';
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}
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} {a b c d}
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do_test alter2-10.3 {
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execsql {
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DELETE FROM t2 WHERE a = 'c';
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SELECT a FROM t2 WHERE b = X'ABCD';
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}
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} {a b d}
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do_test alter2-10.4 {
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execsql {
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SELECT count(b) FROM t2 WHERE b = X'ABCD';
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}
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} {3}
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finish_test
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