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# 2007 January 24
#
# 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 INSERT transfer optimization.
#
# $Id: insert4.test,v 1.10 2008/01/21 16:22:46 drh Exp $
 
set testdir [file dirname $argv0]
source $testdir/tester.tcl
 
ifcapable !view||!subquery {
finish_test
return
}
 
# The sqlite3_xferopt_count variable is incremented whenever the
# insert transfer optimization applies.
#
# This procedure runs a test to see if the sqlite3_xferopt_count is
# set to N.
#
proc xferopt_test {testname N} {
do_test $testname {set ::sqlite3_xferopt_count} $N
}
 
# Create tables used for testing.
#
execsql {
PRAGMA legacy_file_format = 0;
CREATE TABLE t1(a int, b int, check(b>a));
CREATE TABLE t2(x int, y int);
CREATE VIEW v2 AS SELECT y, x FROM t2;
CREATE TABLE t3(a int, b int);
}
 
# Ticket #2252. Make sure the an INSERT from identical tables
# does not violate constraints.
#
do_test insert4-1.1 {
set sqlite3_xferopt_count 0
execsql {
DELETE FROM t1;
DELETE FROM t2;
INSERT INTO t2 VALUES(9,1);
}
catchsql {
INSERT INTO t1 SELECT * FROM t2;
}
} {1 {constraint failed}}
xferopt_test insert4-1.2 0
do_test insert4-1.3 {
execsql {
SELECT * FROM t1;
}
} {}
 
# Tests to make sure that the transfer optimization is not occurring
# when it is not a valid optimization.
#
# The SELECT must be against a real table.
do_test insert4-2.1.1 {
execsql {
DELETE FROM t1;
INSERT INTO t1 SELECT 4, 8;
SELECT * FROM t1;
}
} {4 8}
xferopt_test insert4-2.1.2 0
do_test insert4-2.2.1 {
catchsql {
DELETE FROM t1;
INSERT INTO t1 SELECT * FROM v2;
SELECT * FROM t1;
}
} {0 {1 9}}
xferopt_test insert4-2.2.2 0
 
# Do not run the transfer optimization if there is a LIMIT clause
#
do_test insert4-2.3.1 {
execsql {
DELETE FROM t2;
INSERT INTO t2 VALUES(9,1);
INSERT INTO t2 SELECT y, x FROM t2;
INSERT INTO t3 SELECT * FROM t2 LIMIT 1;
SELECT * FROM t3;
}
} {9 1}
xferopt_test insert4-2.3.2 0
do_test insert4-2.3.3 {
catchsql {
DELETE FROM t1;
INSERT INTO t1 SELECT * FROM t2 LIMIT 1;
SELECT * FROM t1;
}
} {1 {constraint failed}}
xferopt_test insert4-2.3.4 0
 
# Do not run the transfer optimization if there is a DISTINCT
#
do_test insert4-2.4.1 {
execsql {
DELETE FROM t3;
INSERT INTO t3 SELECT DISTINCT * FROM t2;
SELECT * FROM t3;
}
} {1 9 9 1}
xferopt_test insert4-2.4.2 0
do_test insert4-2.4.3 {
catchsql {
DELETE FROM t1;
INSERT INTO t1 SELECT DISTINCT * FROM t2;
}
} {1 {constraint failed}}
xferopt_test insert4-2.4.4 0
 
# The following procedure constructs two tables then tries to transfer
# data from one table to the other. Checks are made to make sure the
# transfer is successful and that the transfer optimization was used or
# not, as appropriate.
#
# xfer_check TESTID XFER-USED INIT-DATA DEST-SCHEMA SRC-SCHEMA
#
# The TESTID argument is the symbolic name for this test. The XFER-USED
# argument is true if the transfer optimization should be employed and
# false if not. INIT-DATA is a single row of data that is to be
# transfered. DEST-SCHEMA and SRC-SCHEMA are table declarations for
# the destination and source tables.
#
proc xfer_check {testid xferused initdata destschema srcschema} {
execsql "CREATE TABLE dest($destschema)"
execsql "CREATE TABLE src($srcschema)"
execsql "INSERT INTO src VALUES([join $initdata ,])"
set ::sqlite3_xferopt_count 0
do_test $testid.1 {
execsql {
INSERT INTO dest SELECT * FROM src;
SELECT * FROM dest;
}
} $initdata
do_test $testid.2 {
set ::sqlite3_xferopt_count
} $xferused
execsql {
DROP TABLE dest;
DROP TABLE src;
}
}
 
 
# Do run the transfer optimization if tables have identical
# CHECK constraints.
#
xfer_check insert4-3.1 1 {1 9} \
{a int, b int CHECK(b>a)} \
{x int, y int CHECK(y>x)}
xfer_check insert4-3.2 1 {1 9} \
{a int, b int CHECK(b>a)} \
{x int CHECK(y>x), y int}
 
# Do run the transfer optimization if the destination table lacks
# any CHECK constraints regardless of whether or not there are CHECK
# constraints on the source table.
#
xfer_check insert4-3.3 1 {1 9} \
{a int, b int} \
{x int, y int CHECK(y>x)}
 
# Do run the transfer optimization if the destination table omits
# NOT NULL constraints that the source table has.
#
xfer_check insert4-3.4 0 {1 9} \
{a int, b int CHECK(b>a)} \
{x int, y int}
 
# Do not run the optimization if the destination has NOT NULL
# constraints that the source table lacks.
#
xfer_check insert4-3.5 0 {1 9} \
{a int, b int NOT NULL} \
{x int, y int}
xfer_check insert4-3.6 0 {1 9} \
{a int, b int NOT NULL} \
{x int NOT NULL, y int}
xfer_check insert4-3.7 0 {1 9} \
{a int NOT NULL, b int NOT NULL} \
{x int NOT NULL, y int}
xfer_check insert4-3.8 0 {1 9} \
{a int NOT NULL, b int} \
{x int, y int}
 
 
# Do run the transfer optimization if the destination table and
# source table have the same NOT NULL constraints or if the
# source table has extra NOT NULL constraints.
#
xfer_check insert4-3.9 1 {1 9} \
{a int, b int} \
{x int NOT NULL, y int}
xfer_check insert4-3.10 1 {1 9} \
{a int, b int} \
{x int NOT NULL, y int NOT NULL}
xfer_check insert4-3.11 1 {1 9} \
{a int NOT NULL, b int} \
{x int NOT NULL, y int NOT NULL}
xfer_check insert4-3.12 1 {1 9} \
{a int, b int NOT NULL} \
{x int NOT NULL, y int NOT NULL}
 
# Do not run the optimization if any corresponding table
# columns have different affinities.
#
xfer_check insert4-3.20 0 {1 9} \
{a text, b int} \
{x int, b int}
xfer_check insert4-3.21 0 {1 9} \
{a int, b int} \
{x text, b int}
 
# "int" and "integer" are equivalent so the optimization should
# run here.
#
xfer_check insert4-3.22 1 {1 9} \
{a int, b int} \
{x integer, b int}
 
# Ticket #2291.
#
 
do_test insert4-4.1a {
execsql {CREATE TABLE t4(a, b, UNIQUE(a,b))}
} {}
ifcapable vacuum {
do_test insert4-4.1b {
execsql {
INSERT INTO t4 VALUES(NULL,0);
INSERT INTO t4 VALUES(NULL,1);
INSERT INTO t4 VALUES(NULL,1);
VACUUM;
}
} {}
}
 
# Check some error conditions:
#
do_test insert4-5.1 {
# Table does not exist.
catchsql { INSERT INTO t2 SELECT * FROM nosuchtable }
} {1 {no such table: nosuchtable}}
do_test insert4-5.2 {
# Number of columns does not match.
catchsql {
CREATE TABLE t5(a, b, c);
INSERT INTO t4 SELECT * FROM t5;
}
} {1 {table t4 has 2 columns but 3 values were supplied}}
 
do_test insert4-6.1 {
set ::sqlite3_xferopt_count 0
execsql {
CREATE INDEX t2_i2 ON t2(x, y COLLATE nocase);
CREATE INDEX t2_i1 ON t2(x ASC, y DESC);
CREATE INDEX t3_i1 ON t3(a, b);
INSERT INTO t2 SELECT * FROM t3;
}
set ::sqlite3_xferopt_count
} {0}
do_test insert4-6.2 {
set ::sqlite3_xferopt_count 0
execsql {
DROP INDEX t2_i2;
INSERT INTO t2 SELECT * FROM t3;
}
set ::sqlite3_xferopt_count
} {0}
do_test insert4-6.3 {
set ::sqlite3_xferopt_count 0
execsql {
DROP INDEX t2_i1;
CREATE INDEX t2_i1 ON t2(x ASC, y ASC);
INSERT INTO t2 SELECT * FROM t3;
}
set ::sqlite3_xferopt_count
} {1}
do_test insert4-6.4 {
set ::sqlite3_xferopt_count 0
execsql {
DROP INDEX t2_i1;
CREATE INDEX t2_i1 ON t2(x ASC, y COLLATE RTRIM);
INSERT INTO t2 SELECT * FROM t3;
}
set ::sqlite3_xferopt_count
} {0}
 
 
do_test insert4-6.5 {
execsql {
CREATE TABLE t6a(x CHECK( x<>'abc' ));
INSERT INTO t6a VALUES('ABC');
SELECT * FROM t6a;
}
} {ABC}
do_test insert4-6.6 {
execsql {
CREATE TABLE t6b(x CHECK( x<>'abc' COLLATE nocase ));
}
catchsql {
INSERT INTO t6b SELECT * FROM t6a;
}
} {1 {constraint failed}}
do_test insert4-6.7 {
execsql {
DROP TABLE t6b;
CREATE TABLE t6b(x CHECK( x COLLATE nocase <>'abc' ));
}
catchsql {
INSERT INTO t6b SELECT * FROM t6a;
}
} {1 {constraint failed}}
 
# Ticket [6284df89debdfa61db8073e062908af0c9b6118e]
# Disable the xfer optimization if the destination table contains
# a foreign key constraint
#
ifcapable foreignkey {
do_test insert4-7.1 {
set ::sqlite3_xferopt_count 0
execsql {
CREATE TABLE t7a(x INTEGER PRIMARY KEY); INSERT INTO t7a VALUES(123);
CREATE TABLE t7b(y INTEGER REFERENCES t7a);
CREATE TABLE t7c(z INT); INSERT INTO t7c VALUES(234);
INSERT INTO t7b SELECT * FROM t7c;
SELECT * FROM t7b;
}
} {234}
do_test insert4-7.2 {
set ::sqlite3_xferopt_count
} {1}
do_test insert4-7.3 {
set ::sqlite3_xferopt_count 0
execsql {
DELETE FROM t7b;
PRAGMA foreign_keys=ON;
}
catchsql {
INSERT INTO t7b SELECT * FROM t7c;
}
} {1 {foreign key constraint failed}}
do_test insert4-7.4 {
execsql {SELECT * FROM t7b}
} {}
do_test insert4-7.5 {
set ::sqlite3_xferopt_count
} {0}
do_test insert4-7.6 {
set ::sqlite3_xferopt_count 0
execsql {
DELETE FROM t7b; DELETE FROM t7c;
INSERT INTO t7c VALUES(123);
INSERT INTO t7b SELECT * FROM t7c;
SELECT * FROM t7b;
}
} {123}
do_test insert4-7.7 {
set ::sqlite3_xferopt_count
} {0}
do_test insert4-7.7 {
set ::sqlite3_xferopt_count 0
execsql {
PRAGMA foreign_keys=OFF;
DELETE FROM t7b;
INSERT INTO t7b SELECT * FROM t7c;
SELECT * FROM t7b;
}
} {123}
do_test insert4-7.8 {
set ::sqlite3_xferopt_count
} {1}
}
 
finish_test