# 2001 September 27## 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.  The# focus of this file is testing the CREATE UNIQUE INDEX statement,# and primary keys, and the UNIQUE constraint on table columns## $Id: unique.test,v 1.8 2005/06/24 03:53:06 drh Exp $set testdir [file dirname $argv0]source $testdir/tester.tcl# Try to create a table with two primary keys.# (This is allowed in SQLite even that it is not valid SQL)#do_test unique-1.1 {  catchsql {    CREATE TABLE t1(       a int PRIMARY KEY,       b int PRIMARY KEY,       c text    );  }} {1 {table "t1" has more than one primary key}}do_test unique-1.1b {  catchsql {    CREATE TABLE t1(       a int PRIMARY KEY,       b int UNIQUE,       c text    );  }} {0 {}}do_test unique-1.2 {  catchsql {    INSERT INTO t1(a,b,c) VALUES(1,2,3)  }} {0 {}}do_test unique-1.3 {  catchsql {    INSERT INTO t1(a,b,c) VALUES(1,3,4)  }} {1 {column a is not unique}}do_test unique-1.4 {  execsql {    SELECT * FROM t1 ORDER BY a;  }} {1 2 3}do_test unique-1.5 {  catchsql {    INSERT INTO t1(a,b,c) VALUES(3,2,4)  }} {1 {column b is not unique}}do_test unique-1.6 {  execsql {    SELECT * FROM t1 ORDER BY a;  }} {1 2 3}do_test unique-1.7 {  catchsql {    INSERT INTO t1(a,b,c) VALUES(3,4,5)  }} {0 {}}do_test unique-1.8 {  execsql {    SELECT * FROM t1 ORDER BY a;  }} {1 2 3 3 4 5}integrity_check unique-1.9do_test unique-2.0 {  execsql {    DROP TABLE t1;    CREATE TABLE t2(a int, b int);    INSERT INTO t2(a,b) VALUES(1,2);    INSERT INTO t2(a,b) VALUES(3,4);    SELECT * FROM t2 ORDER BY a;  }} {1 2 3 4}do_test unique-2.1 {  catchsql {    CREATE UNIQUE INDEX i2 ON t2(a)  }} {0 {}}do_test unique-2.2 {  catchsql {    SELECT * FROM t2 ORDER BY a  }} {0 {1 2 3 4}}do_test unique-2.3 {  catchsql {    INSERT INTO t2 VALUES(1,5);  }} {1 {column a is not unique}}do_test unique-2.4 {  catchsql {    SELECT * FROM t2 ORDER BY a  }} {0 {1 2 3 4}}do_test unique-2.5 {  catchsql {    DROP INDEX i2;    SELECT * FROM t2 ORDER BY a;  }} {0 {1 2 3 4}}do_test unique-2.6 {  catchsql {    INSERT INTO t2 VALUES(1,5)  }} {0 {}}do_test unique-2.7 {  catchsql {    SELECT * FROM t2 ORDER BY a, b;  }} {0 {1 2 1 5 3 4}}do_test unique-2.8 {  catchsql {    CREATE UNIQUE INDEX i2 ON t2(a);  }} {1 {indexed columns are not unique}}do_test unique-2.9 {  catchsql {    CREATE INDEX i2 ON t2(a);  }} {0 {}}integrity_check unique-2.10# Test the UNIQUE keyword as used on two or more fields.#do_test unique-3.1 {  catchsql {    CREATE TABLE t3(       a int,       b int,       c int,       d int,       unique(a,c,d)     );  }} {0 {}}do_test unique-3.2 {  catchsql {    INSERT INTO t3(a,b,c,d) VALUES(1,2,3,4);    SELECT * FROM t3 ORDER BY a,b,c,d;  }} {0 {1 2 3 4}}do_test unique-3.3 {  catchsql {    INSERT INTO t3(a,b,c,d) VALUES(1,2,3,5);    SELECT * FROM t3 ORDER BY a,b,c,d;  }} {0 {1 2 3 4 1 2 3 5}}do_test unique-3.4 {  catchsql {    INSERT INTO t3(a,b,c,d) VALUES(1,4,3,5);    SELECT * FROM t3 ORDER BY a,b,c,d;  }} {1 {columns a, c, d are not unique}}integrity_check unique-3.5# Make sure NULLs are distinct as far as the UNIQUE tests are# concerned.#do_test unique-4.1 {  execsql {    CREATE TABLE t4(a UNIQUE, b, c, UNIQUE(b,c));    INSERT INTO t4 VALUES(1,2,3);    INSERT INTO t4 VALUES(NULL, 2, NULL);    SELECT * FROM t4;  }} {1 2 3 {} 2 {}}do_test unique-4.2 {  catchsql {    INSERT INTO t4 VALUES(NULL, 3, 4);  }} {0 {}}do_test unique-4.3 {  execsql {    SELECT * FROM t4  }} {1 2 3 {} 2 {} {} 3 4}do_test unique-4.4 {  catchsql {    INSERT INTO t4 VALUES(2, 2, NULL);  }} {0 {}}do_test unique-4.5 {  execsql {    SELECT * FROM t4  }} {1 2 3 {} 2 {} {} 3 4 2 2 {}}# Ticket #1301.  Any NULL value in a set of unique columns should# cause the rows to be distinct.#do_test unique-4.6 {  catchsql {    INSERT INTO t4 VALUES(NULL, 2, NULL);  }} {0 {}}do_test unique-4.7 {  execsql {SELECT * FROM t4}} {1 2 3 {} 2 {} {} 3 4 2 2 {} {} 2 {}}do_test unique-4.8 {  catchsql {CREATE UNIQUE INDEX i4a ON t4(a,b)}} {0 {}}do_test unique-4.9 {  catchsql {CREATE UNIQUE INDEX i4b ON t4(a,b,c)}} {0 {}}do_test unique-4.10 {  catchsql {CREATE UNIQUE INDEX i4c ON t4(b)}} {1 {indexed columns are not unique}}integrity_check unique-4.99# Test the error message generation logic.  In particular, make sure we# do not overflow the static buffer used to generate the error message.#do_test unique-5.1 {  execsql {    CREATE TABLE t5(      first_column_with_long_name,      second_column_with_long_name,      third_column_with_long_name,      fourth_column_with_long_name,      fifth_column_with_long_name,      sixth_column_with_long_name,      UNIQUE(        first_column_with_long_name,        second_column_with_long_name,        third_column_with_long_name,        fourth_column_with_long_name,        fifth_column_with_long_name,        sixth_column_with_long_name      )    );    INSERT INTO t5 VALUES(1,2,3,4,5,6);    SELECT * FROM t5;  }} {1 2 3 4 5 6}do_test unique-5.2 {  catchsql {    INSERT INTO t5 VALUES(1,2,3,4,5,6);  }} {1 {columns first_column_with_long_name, second_column_with_long_name, third_column_with_long_name, fourth_column_with_long_name, fifth_column_with_long_name, ... are not unique}}finish_test