# 2007 May 8
#
# 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 contains tests to verify that the limits defined in
# sqlite source file limits.h are enforced.
#
# $Id: sqllimits1.test,v 1.33 2009/06/25 01:47:12 drh Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
# Verify that the default per-connection limits are the same as
# the compile-time hard limits.
#
sqlite3 db2 :memory:
do_test sqllimits1-1.1 {
sqlite3_limit db SQLITE_LIMIT_LENGTH -1
} $SQLITE_MAX_LENGTH
do_test sqllimits1-1.2 {
sqlite3_limit db SQLITE_LIMIT_SQL_LENGTH -1
} $SQLITE_MAX_SQL_LENGTH
do_test sqllimits1-1.3 {
sqlite3_limit db SQLITE_LIMIT_COLUMN -1
} $SQLITE_MAX_COLUMN
do_test sqllimits1-1.4 {
sqlite3_limit db SQLITE_LIMIT_EXPR_DEPTH -1
} $SQLITE_MAX_EXPR_DEPTH
do_test sqllimits1-1.5 {
sqlite3_limit db SQLITE_LIMIT_COMPOUND_SELECT -1
} $SQLITE_MAX_COMPOUND_SELECT
do_test sqllimits1-1.6 {
sqlite3_limit db SQLITE_LIMIT_VDBE_OP -1
} $SQLITE_MAX_VDBE_OP
do_test sqllimits1-1.7 {
sqlite3_limit db SQLITE_LIMIT_FUNCTION_ARG -1
} $SQLITE_MAX_FUNCTION_ARG
do_test sqllimits1-1.8 {
sqlite3_limit db SQLITE_LIMIT_ATTACHED -1
} $SQLITE_MAX_ATTACHED
do_test sqllimits1-1.9 {
sqlite3_limit db SQLITE_LIMIT_LIKE_PATTERN_LENGTH -1
} $SQLITE_MAX_LIKE_PATTERN_LENGTH
do_test sqllimits1-1.10 {
sqlite3_limit db SQLITE_LIMIT_VARIABLE_NUMBER -1
} $SQLITE_MAX_VARIABLE_NUMBER
# Limit parameters out of range.
#
do_test sqllimits1-1.20 {
sqlite3_limit db SQLITE_LIMIT_TOOSMALL 123
} {-1}
do_test sqllimits1-1.21 {
sqlite3_limit db SQLITE_LIMIT_TOOSMALL 123
} {-1}
do_test sqllimits1-1.22 {
sqlite3_limit db SQLITE_LIMIT_TOOBIG 123
} {-1}
do_test sqllimits1-1.23 {
sqlite3_limit db SQLITE_LIMIT_TOOBIG 123
} {-1}
# Decrease all limits by half. Verify that the new limits take.
#
if {$SQLITE_MAX_LENGTH>=2} {
do_test sqllimits1-2.1.1 {
sqlite3_limit db SQLITE_LIMIT_LENGTH \
[expr {$::SQLITE_MAX_LENGTH/2}]
} $SQLITE_MAX_LENGTH
do_test sqllimits1-2.1.2 {
sqlite3_limit db SQLITE_LIMIT_LENGTH -1
} [expr {$SQLITE_MAX_LENGTH/2}]
}
if {$SQLITE_MAX_SQL_LENGTH>=2} {
do_test sqllimits1-2.2.1 {
sqlite3_limit db SQLITE_LIMIT_SQL_LENGTH \
[expr {$::SQLITE_MAX_SQL_LENGTH/2}]
} $SQLITE_MAX_SQL_LENGTH
do_test sqllimits1-2.2.2 {
sqlite3_limit db SQLITE_LIMIT_SQL_LENGTH -1
} [expr {$SQLITE_MAX_SQL_LENGTH/2}]
}
if {$SQLITE_MAX_COLUMN>=2} {
do_test sqllimits1-2.3.1 {
sqlite3_limit db SQLITE_LIMIT_COLUMN \
[expr {$::SQLITE_MAX_COLUMN/2}]
} $SQLITE_MAX_COLUMN
do_test sqllimits1-2.3.2 {
sqlite3_limit db SQLITE_LIMIT_COLUMN -1
} [expr {$SQLITE_MAX_COLUMN/2}]
}
if {$SQLITE_MAX_EXPR_DEPTH>=2} {
do_test sqllimits1-2.4.1 {
sqlite3_limit db SQLITE_LIMIT_EXPR_DEPTH \
[expr {$::SQLITE_MAX_EXPR_DEPTH/2}]
} $SQLITE_MAX_EXPR_DEPTH
do_test sqllimits1-2.4.2 {
sqlite3_limit db SQLITE_LIMIT_EXPR_DEPTH -1
} [expr {$SQLITE_MAX_EXPR_DEPTH/2}]
}
if {$SQLITE_MAX_COMPOUND_SELECT>=2} {
do_test sqllimits1-2.5.1 {
sqlite3_limit db SQLITE_LIMIT_COMPOUND_SELECT \
[expr {$::SQLITE_MAX_COMPOUND_SELECT/2}]
} $SQLITE_MAX_COMPOUND_SELECT
do_test sqllimits1-2.5.2 {
sqlite3_limit db SQLITE_LIMIT_COMPOUND_SELECT -1
} [expr {$SQLITE_MAX_COMPOUND_SELECT/2}]
}
if {$SQLITE_MAX_VDBE_OP>=2} {
do_test sqllimits1-2.6.1 {
sqlite3_limit db SQLITE_LIMIT_VDBE_OP \
[expr {$::SQLITE_MAX_VDBE_OP/2}]
} $SQLITE_MAX_VDBE_OP
do_test sqllimits1-2.6.2 {
sqlite3_limit db SQLITE_LIMIT_VDBE_OP -1
} [expr {$SQLITE_MAX_VDBE_OP/2}]
}
if {$SQLITE_MAX_FUNCTION_ARG>=2} {
do_test sqllimits1-2.7.1 {
sqlite3_limit db SQLITE_LIMIT_FUNCTION_ARG \
[expr {$::SQLITE_MAX_FUNCTION_ARG/2}]
} $SQLITE_MAX_FUNCTION_ARG
do_test sqllimits1-2.7.2 {
sqlite3_limit db SQLITE_LIMIT_FUNCTION_ARG -1
} [expr {$SQLITE_MAX_FUNCTION_ARG/2}]
}
if {$SQLITE_MAX_ATTACHED>=2} {
do_test sqllimits1-2.8.1 {
sqlite3_limit db SQLITE_LIMIT_ATTACHED \
[expr {$::SQLITE_MAX_ATTACHED/2}]
} $SQLITE_MAX_ATTACHED
do_test sqllimits1-2.8.2 {
sqlite3_limit db SQLITE_LIMIT_ATTACHED -1
} [expr {$SQLITE_MAX_ATTACHED/2}]
}
if {$SQLITE_MAX_LIKE_PATTERN_LENGTH>=2} {
do_test sqllimits1-2.9.1 {
sqlite3_limit db SQLITE_LIMIT_LIKE_PATTERN_LENGTH \
[expr {$::SQLITE_MAX_LIKE_PATTERN_LENGTH/2}]
} $SQLITE_MAX_LIKE_PATTERN_LENGTH
do_test sqllimits1-2.9.2 {
sqlite3_limit db SQLITE_LIMIT_LIKE_PATTERN_LENGTH -1
} [expr {$SQLITE_MAX_LIKE_PATTERN_LENGTH/2}]
}
if {$SQLITE_MAX_VARIABLE_NUMBER>=2} {
do_test sqllimits1-2.10.1 {
sqlite3_limit db SQLITE_LIMIT_VARIABLE_NUMBER \
[expr {$::SQLITE_MAX_VARIABLE_NUMBER/2}]
} $SQLITE_MAX_VARIABLE_NUMBER
do_test sqllimits1-2.10.2 {
sqlite3_limit db SQLITE_LIMIT_VARIABLE_NUMBER -1
} [expr {$SQLITE_MAX_VARIABLE_NUMBER/2}]
}
# In a separate database connection, verify that the limits are unchanged.
#
do_test sqllimits1-3.1 {
sqlite3_limit db2 SQLITE_LIMIT_LENGTH -1
} $SQLITE_MAX_LENGTH
do_test sqllimits1-3.2 {
sqlite3_limit db2 SQLITE_LIMIT_SQL_LENGTH -1
} $SQLITE_MAX_SQL_LENGTH
do_test sqllimits1-3.3 {
sqlite3_limit db2 SQLITE_LIMIT_COLUMN -1
} $SQLITE_MAX_COLUMN
do_test sqllimits1-3.4 {
sqlite3_limit db2 SQLITE_LIMIT_EXPR_DEPTH -1
} $SQLITE_MAX_EXPR_DEPTH
do_test sqllimits1-3.5 {
sqlite3_limit db2 SQLITE_LIMIT_COMPOUND_SELECT -1
} $SQLITE_MAX_COMPOUND_SELECT
do_test sqllimits1-3.6 {
sqlite3_limit db2 SQLITE_LIMIT_VDBE_OP -1
} $SQLITE_MAX_VDBE_OP
do_test sqllimits1-3.7 {
sqlite3_limit db2 SQLITE_LIMIT_FUNCTION_ARG -1
} $SQLITE_MAX_FUNCTION_ARG
do_test sqllimits1-3.8 {
sqlite3_limit db2 SQLITE_LIMIT_ATTACHED -1
} $SQLITE_MAX_ATTACHED
do_test sqllimits1-3.9 {
sqlite3_limit db2 SQLITE_LIMIT_LIKE_PATTERN_LENGTH -1
} $SQLITE_MAX_LIKE_PATTERN_LENGTH
do_test sqllimits1-3.10 {
sqlite3_limit db2 SQLITE_LIMIT_VARIABLE_NUMBER -1
} $SQLITE_MAX_VARIABLE_NUMBER
db2 close
# Attempt to set all limits to the maximum 32-bit integer. Verify
# that the limit does not exceed the compile-time upper bound.
#
do_test sqllimits1-4.1.1 {
sqlite3_limit db SQLITE_LIMIT_LENGTH 0x7fffffff
sqlite3_limit db SQLITE_LIMIT_LENGTH -1
} $SQLITE_MAX_LENGTH
do_test sqllimits1-4.2.1 {
sqlite3_limit db SQLITE_LIMIT_SQL_LENGTH 0x7fffffff
sqlite3_limit db SQLITE_LIMIT_SQL_LENGTH -1
} $SQLITE_MAX_SQL_LENGTH
do_test sqllimits1-4.3.1 {
sqlite3_limit db SQLITE_LIMIT_COLUMN 0x7fffffff
sqlite3_limit db SQLITE_LIMIT_COLUMN -1
} $SQLITE_MAX_COLUMN
do_test sqllimits1-4.4.1 {
sqlite3_limit db SQLITE_LIMIT_EXPR_DEPTH 0x7fffffff
sqlite3_limit db SQLITE_LIMIT_EXPR_DEPTH -1
} $SQLITE_MAX_EXPR_DEPTH
do_test sqllimits1-4.5.1 {
sqlite3_limit db SQLITE_LIMIT_COMPOUND_SELECT 0x7fffffff
sqlite3_limit db SQLITE_LIMIT_COMPOUND_SELECT -1
} $SQLITE_MAX_COMPOUND_SELECT
do_test sqllimits1-4.6.1 {
sqlite3_limit db SQLITE_LIMIT_VDBE_OP 0x7fffffff
sqlite3_limit db SQLITE_LIMIT_VDBE_OP -1
} $SQLITE_MAX_VDBE_OP
do_test sqllimits1-4.7.1 {
sqlite3_limit db SQLITE_LIMIT_FUNCTION_ARG 0x7fffffff
sqlite3_limit db SQLITE_LIMIT_FUNCTION_ARG -1
} $SQLITE_MAX_FUNCTION_ARG
do_test sqllimits1-4.8.1 {
sqlite3_limit db SQLITE_LIMIT_ATTACHED 0x7fffffff
sqlite3_limit db SQLITE_LIMIT_ATTACHED -1
} $SQLITE_MAX_ATTACHED
do_test sqllimits1-4.9.1 {
sqlite3_limit db SQLITE_LIMIT_LIKE_PATTERN_LENGTH 0x7fffffff
sqlite3_limit db SQLITE_LIMIT_LIKE_PATTERN_LENGTH -1
} $SQLITE_MAX_LIKE_PATTERN_LENGTH
do_test sqllimits1-4.10.1 {
sqlite3_limit db SQLITE_LIMIT_VARIABLE_NUMBER 0x7fffffff
sqlite3_limit db SQLITE_LIMIT_VARIABLE_NUMBER -1
} $SQLITE_MAX_VARIABLE_NUMBER
#--------------------------------------------------------------------
# Test cases sqllimits1-5.* test that the SQLITE_MAX_LENGTH limit
# is enforced.
#
db close
sqlite3 db test.db
set LARGESIZE 99999
set SQLITE_LIMIT_LENGTH 100000
sqlite3_limit db SQLITE_LIMIT_LENGTH $SQLITE_LIMIT_LENGTH
do_test sqllimits1-5.1.1 {
catchsql { SELECT randomblob(2147483647) }
} {1 {string or blob too big}}
do_test sqllimits1-5.1.2 {
catchsql { SELECT zeroblob(2147483647) }
} {1 {string or blob too big}}
do_test sqllimits1-5.2 {
catchsql { SELECT LENGTH(randomblob($::LARGESIZE)) }
} [list 0 $LARGESIZE]
do_test sqllimits1-5.3 {
catchsql { SELECT quote(randomblob($::LARGESIZE)) }
} {1 {string or blob too big}}
do_test sqllimits1-5.4 {
catchsql { SELECT LENGTH(zeroblob($::LARGESIZE)) }
} [list 0 $LARGESIZE]
do_test sqllimits1-5.5 {
catchsql { SELECT quote(zeroblob($::LARGESIZE)) }
} {1 {string or blob too big}}
do_test sqllimits1-5.6 {
catchsql { SELECT zeroblob(-1) }
} {0 {{}}}
do_test sqllimits1-5.9 {
set ::str [string repeat A 65537]
set ::rep [string repeat B 65537]
catchsql { SELECT replace($::str, 'A', $::rep) }
} {1 {string or blob too big}}
do_test sqllimits1-5.10 {
set ::str [string repeat %J 2100]
catchsql { SELECT strftime($::str, '2003-10-31') }
} {1 {string or blob too big}}
do_test sqllimits1-5.11 {
set ::str1 [string repeat A [expr {$SQLITE_LIMIT_LENGTH - 10}]]
set ::str2 [string repeat B [expr {$SQLITE_LIMIT_LENGTH - 10}]]
catchsql { SELECT $::str1 || $::str2 }
} {1 {string or blob too big}}
do_test sqllimits1-5.12 {
set ::str1 [string repeat ' [expr {$SQLITE_LIMIT_LENGTH - 10}]]
catchsql { SELECT quote($::str1) }
} {1 {string or blob too big}}
do_test sqllimits1-5.13 {
set ::str1 [string repeat ' [expr {$SQLITE_LIMIT_LENGTH - 10}]]
catchsql { SELECT hex($::str1) }
} {1 {string or blob too big}}
do_test sqllimits1-5.14.1 {
set ::STMT [sqlite3_prepare db "SELECT ?" -1 TAIL]
sqlite3_bind_zeroblob $::STMT 1 [expr {$SQLITE_LIMIT_LENGTH + 1}]
} {}
do_test sqllimits1-5.14.2 {
sqlite3_step $::STMT
} {SQLITE_ERROR}
do_test sqllimits1-5.14.3 {
sqlite3_reset $::STMT
} {SQLITE_TOOBIG}
do_test sqllimits1-5.14.4 {
set np1 [expr {$SQLITE_LIMIT_LENGTH + 1}]
set ::str1 [string repeat A $np1]
catch {sqlite3_bind_text $::STMT 1 $::str1 -1} res
set res
} {SQLITE_TOOBIG}
ifcapable utf16 {
do_test sqllimits1-5.14.5 {
catch {sqlite3_bind_text16 $::STMT 1 $::str1 -1} res
set res
} {SQLITE_TOOBIG}
}
do_test sqllimits1-5.14.6 {
catch {sqlite3_bind_text $::STMT 1 $::str1 $np1} res
set res
} {SQLITE_TOOBIG}
ifcapable utf16 {
do_test sqllimits1-5.14.7 {
catch {sqlite3_bind_text16 $::STMT 1 $::str1 $np1} res
set res
} {SQLITE_TOOBIG}
}
do_test sqllimits1-5.14.8 {
set n [expr {$np1-1}]
catch {sqlite3_bind_text $::STMT 1 $::str1 $n} res
set res
} {}
do_test sqllimits1-5.14.9 {
catch {sqlite3_bind_text16 $::STMT 1 $::str1 $n} res
set res
} {}
sqlite3_finalize $::STMT
do_test sqllimits1-5.15 {
execsql {
CREATE TABLE t4(x);
INSERT INTO t4 VALUES(1);
INSERT INTO t4 VALUES(2);
INSERT INTO t4 SELECT 2+x FROM t4;
}
catchsql {
SELECT group_concat(hex(randomblob(20000))) FROM t4;
}
} {1 {string or blob too big}}
db eval {DROP TABLE t4}
sqlite3_limit db SQLITE_LIMIT_SQL_LENGTH 0x7fffffff
set strvalue [string repeat A $::SQLITE_LIMIT_LENGTH]
do_test sqllimits1-5.16 {
catchsql "SELECT '$strvalue'"
} [list 0 $strvalue]
do_test sqllimits1-5.17.1 {
catchsql "SELECT 'A$strvalue'"
} [list 1 {string or blob too big}]
do_test sqllimits1-5.17.2 {
sqlite3_limit db SQLITE_LIMIT_LENGTH 0x7fffffff
catchsql {SELECT 'A' || $::strvalue}
} [list 0 A$strvalue]
do_test sqllimits1-5.17.3 {
sqlite3_limit db SQLITE_LIMIT_LENGTH $SQLITE_LIMIT_LENGTH
catchsql {SELECT 'A' || $::strvalue}
} [list 1 {string or blob too big}]
set blobvalue [string repeat 41 $::SQLITE_LIMIT_LENGTH]
do_test sqllimits1-5.18 {
catchsql "SELECT x'$blobvalue'"
} [list 0 $strvalue]
do_test sqllimits1-5.19 {
catchsql "SELECT '41$blobvalue'"
} [list 1 {string or blob too big}]
unset blobvalue
ifcapable datetime {
set strvalue [string repeat D [expr {$SQLITE_LIMIT_LENGTH-12}]]
do_test sqllimits1-5.20 {
catchsql {SELECT strftime('%Y ' || $::strvalue, '2008-01-02')}
} [list 0 [list "2008 $strvalue"]]
do_test sqllimits1-5.21 {
catchsql {SELECT strftime('%Y-%m-%d ' || $::strvalue, '2008-01-02')}
} {1 {string or blob too big}}
}
unset strvalue
#--------------------------------------------------------------------
# Test cases sqllimits1-6.* test that the SQLITE_MAX_SQL_LENGTH limit
# is enforced.
#
do_test sqllimits1-6.1 {
sqlite3_limit db SQLITE_LIMIT_SQL_LENGTH 50000
set sql "SELECT 1 WHERE 1==1"
set tail " /* A comment to take up space in order to make the string\
longer without increasing the expression depth */\
AND 1 == 1"
set N [expr {(50000 / [string length $tail])+1}]
append sql [string repeat $tail $N]
catchsql $sql
} {1 {string or blob too big}}
do_test sqllimits1-6.3 {
sqlite3_limit db SQLITE_LIMIT_SQL_LENGTH 50000
set sql "SELECT 1 WHERE 1==1"
set tail " /* A comment to take up space in order to make the string\
longer without increasing the expression depth */\
AND 1 == 1"
set N [expr {(50000 / [string length $tail])+1}]
append sql [string repeat $tail $N]
set nbytes [string length $sql]
append sql { AND 0}
set rc [catch {sqlite3_prepare db $sql $nbytes TAIL} STMT]
lappend rc $STMT
} {1 {(18) statement too long}}
do_test sqllimits1-6.4 {
sqlite3_errmsg db
} {statement too long}
#--------------------------------------------------------------------
# Test cases sqllimits1-7.* test that the limit set using the
# max_page_count pragma.
#
do_test sqllimits1-7.1 {
execsql {
PRAGMA max_page_count = 1000;
}
} {1000}
do_test sqllimits1-7.2 {
execsql { CREATE TABLE trig (a INTEGER, b INTEGER); }
# Set up a tree of triggers to fire when a row is inserted
# into table "trig".
#
# INSERT -> insert_b -> update_b -> insert_a -> update_a (chain 1)
# -> update_a -> insert_a -> update_b (chain 2)
# -> insert_a -> update_b -> insert_b -> update_a (chain 3)
# -> update_a -> insert_b -> update_b (chain 4)
#
# Table starts with N rows.
#
# Chain 1: insert_b (update N rows)
# -> update_b (insert 1 rows)
# -> insert_a (update N rows)
# -> update_a (insert 1 rows)
#
# chains 2, 3 and 4 are similar. Each inserts more than N^2 rows, where
# N is the number of rows at the conclusion of the previous chain.
#
# Therefore, a single insert adds (N^16 plus some) rows to the database.
# A really long loop...
#
execsql {
CREATE TRIGGER update_b BEFORE UPDATE ON trig
FOR EACH ROW BEGIN
INSERT INTO trig VALUES (65, 'update_b');
END;
CREATE TRIGGER update_a AFTER UPDATE ON trig
FOR EACH ROW BEGIN
INSERT INTO trig VALUES (65, 'update_a');
END;
CREATE TRIGGER insert_b BEFORE INSERT ON trig
FOR EACH ROW BEGIN
UPDATE trig SET a = 1;
END;
CREATE TRIGGER insert_a AFTER INSERT ON trig
FOR EACH ROW BEGIN
UPDATE trig SET a = 1;
END;
}
} {}
do_test sqllimits1-7.3 {
execsql {
INSERT INTO trig VALUES (1,1);
}
} {}
do_test sqllimits1-7.4 {
execsql {
SELECT COUNT(*) FROM trig;
}
} {7}
# This tries to insert so many rows it fills up the database (limited
# to 1MB, so not that noteworthy an achievement).
#
do_test sqllimits1-7.5 {
catchsql {
INSERT INTO trig VALUES (1,10);
}
} {1 {database or disk is full}}
do_test sqllimits1-7.6 {
catchsql {
SELECT COUNT(*) FROM trig;
}
} {0 7}
# Now check the response of the library to opening a file larger than
# the current max_page_count value. The response is to change the
# internal max_page_count value to match the actual size of the file.
if {[db eval {PRAGMA auto_vacuum}]} {
set fsize 1700
} else {
set fsize 1691
}
do_test sqllimits1-7.7.1 {
execsql {
PRAGMA max_page_count = 1000000;
CREATE TABLE abc(a, b, c);
INSERT INTO abc VALUES(1, 2, 3);
INSERT INTO abc SELECT a||b||c, b||c||a, c||a||b FROM abc;
INSERT INTO abc SELECT a||b||c, b||c||a, c||a||b FROM abc;
INSERT INTO abc SELECT a||b||c, b||c||a, c||a||b FROM abc;
INSERT INTO abc SELECT a||b||c, b||c||a, c||a||b FROM abc;
INSERT INTO abc SELECT a||b||c, b||c||a, c||a||b FROM abc;
INSERT INTO abc SELECT a||b||c, b||c||a, c||a||b FROM abc;
INSERT INTO abc SELECT a||b||c, b||c||a, c||a||b FROM abc;
INSERT INTO abc SELECT a||b||c, b||c||a, c||a||b FROM abc;
INSERT INTO abc SELECT a, b, c FROM abc;
INSERT INTO abc SELECT b, a, c FROM abc;
INSERT INTO abc SELECT c, b, a FROM abc;
}
expr [file size test.db] / 1024
} $fsize
do_test sqllimits1-7.7.2 {
db close
sqlite3 db test.db
execsql {
PRAGMA max_page_count = 1000;
}
execsql {
SELECT count(*) FROM sqlite_master;
}
} {6}
do_test sqllimits1-7.7.3 {
execsql {
PRAGMA max_page_count;
}
} $fsize
do_test sqllimits1-7.7.4 {
execsql {
DROP TABLE abc;
}
} {}
#--------------------------------------------------------------------
# Test cases sqllimits1-8.* test the SQLITE_MAX_COLUMN limit.
#
set SQLITE_LIMIT_COLUMN 200
sqlite3_limit db SQLITE_LIMIT_COLUMN $SQLITE_LIMIT_COLUMN
do_test sqllimits1-8.1 {
# Columns in a table.
set cols [list]
for {set i 0} {$i <= $SQLITE_LIMIT_COLUMN} {incr i} {
lappend cols "c$i"
}
catchsql "CREATE TABLE t([join $cols ,])"
} {1 {too many columns on t}}
do_test sqllimits1-8.2 {
# Columns in the result-set of a SELECT.
set cols [list]
for {set i 0} {$i <= $SQLITE_LIMIT_COLUMN} {incr i} {
lappend cols "sql AS sql$i"
}
catchsql "SELECT [join $cols ,] FROM sqlite_master"
} {1 {too many columns in result set}}
do_test sqllimits1-8.3 {
# Columns in the result-set of a sub-SELECT.
set cols [list]
for {set i 0} {$i <= $SQLITE_LIMIT_COLUMN} {incr i} {
lappend cols "sql AS sql$i"
}
catchsql "SELECT sql4 FROM (SELECT [join $cols ,] FROM sqlite_master)"
} {1 {too many columns in result set}}
do_test sqllimits1-8.4 {
# Columns in an index.
set cols [list]
for {set i 0} {$i <= $SQLITE_LIMIT_COLUMN} {incr i} {
lappend cols c
}
set sql1 "CREATE TABLE t1(c);"
set sql2 "CREATE INDEX i1 ON t1([join $cols ,]);"
catchsql "$sql1 ; $sql2"
} {1 {too many columns in index}}
do_test sqllimits1-8.5 {
# Columns in a GROUP BY clause.
catchsql "SELECT * FROM t1 GROUP BY [join $cols ,]"
} {1 {too many terms in GROUP BY clause}}
do_test sqllimits1-8.6 {
# Columns in an ORDER BY clause.
catchsql "SELECT * FROM t1 ORDER BY [join $cols ,]"
} {1 {too many terms in ORDER BY clause}}
do_test sqllimits1-8.7 {
# Assignments in an UPDATE statement.
set cols [list]
for {set i 0} {$i <= $SQLITE_LIMIT_COLUMN} {incr i} {
lappend cols "c = 1"
}
catchsql "UPDATE t1 SET [join $cols ,];"
} {1 {too many columns in set list}}
do_test sqllimits1-8.8 {
# Columns in a view definition:
set cols [list]
for {set i 0} {$i <= $SQLITE_LIMIT_COLUMN} {incr i} {
lappend cols "c$i"
}
catchsql "CREATE VIEW v1 AS SELECT [join $cols ,] FROM t1;"
} {1 {too many columns in result set}}
do_test sqllimits1-8.9 {
# Columns in a view definition (testing * expansion):
set cols [list]
for {set i 0} {$i < $SQLITE_LIMIT_COLUMN} {incr i} {
lappend cols "c$i"
}
catchsql "CREATE TABLE t2([join $cols ,])"
catchsql "CREATE VIEW v1 AS SELECT *, c1 AS o FROM t2;"
} {1 {too many columns in result set}}
do_test sqllimits1-8.10 {
# ORDER BY columns
set cols [list]
for {set i 0} {$i <= $SQLITE_LIMIT_COLUMN} {incr i} {
lappend cols c
}
set sql "SELECT c FROM t1 ORDER BY [join $cols ,]"
catchsql $sql
} {1 {too many terms in ORDER BY clause}}
do_test sqllimits1-8.11 {
# ORDER BY columns
set cols [list]
for {set i 0} {$i <= $SQLITE_LIMIT_COLUMN} {incr i} {
lappend cols [expr {$i%3 + 1}]
}
set sql "SELECT c, c+1, c+2 FROM t1 UNION SELECT c-1, c-2, c-3 FROM t1"
append sql " ORDER BY [join $cols ,]"
catchsql $sql
} {1 {too many terms in ORDER BY clause}}
#--------------------------------------------------------------------
# These tests - sqllimits1-9.* - test that the SQLITE_LIMIT_EXPR_DEPTH
# limit is enforced. The limit refers to the number of terms in
# the expression.
#
if {$SQLITE_MAX_EXPR_DEPTH==0} {
puts -nonewline stderr "WARNING: Compile with -DSQLITE_MAX_EXPR_DEPTH to run "
puts stderr "tests sqllimits1-9.X"
} else {
do_test sqllimits1-9.1 {
set max $::SQLITE_MAX_EXPR_DEPTH
set expr "(1 [string repeat {AND 1 } $max])"
catchsql [subst {
SELECT $expr
}]
} "1 {Expression tree is too large (maximum depth $::SQLITE_MAX_EXPR_DEPTH)}"
# Attempting to beat the expression depth limit using nested SELECT
# queries causes a parser stack overflow.
do_test sqllimits1-9.2 {
set max $::SQLITE_MAX_EXPR_DEPTH
set expr "SELECT 1"
for {set i 0} {$i <= $max} {incr i} {
set expr "SELECT ($expr)"
}
catchsql [subst { $expr }]
} "1 {parser stack overflow}"
if 0 {
do_test sqllimits1-9.3 {
execsql {
PRAGMA max_page_count = 1000000; -- 1 GB
CREATE TABLE v0(a);
INSERT INTO v0 VALUES(1);
}
db transaction {
for {set i 1} {$i < 200} {incr i} {
set expr "(a [string repeat {AND 1 } 50]) AS a"
execsql [subst {
CREATE VIEW v${i} AS SELECT $expr FROM v[expr {$i-1}]
}]
}
}
} {}
do_test sqllimits1-9.4 {
catchsql {
SELECT a FROM v199
}
} "1 {Expression tree is too large (maximum depth $::SQLITE_MAX_EXPR_DEPTH)}"
}
}
#--------------------------------------------------------------------
# Test cases sqllimits1-10.* test that the SQLITE_MAX_VDBE_OP
# limit works as expected. The limit refers to the number of opcodes
# in a single VDBE program.
#
# TODO
#--------------------------------------------------------------------
# Test the SQLITE_LIMIT_FUNCTION_ARG limit works. Test case names
# match the pattern "sqllimits1-11.*".
#
for {set max 5} {$max<=$SQLITE_MAX_FUNCTION_ARG} {incr max} {
do_test sqllimits1-11.$max.1 {
set vals [list]
sqlite3_limit db SQLITE_LIMIT_FUNCTION_ARG $::max
for {set i 0} {$i < $::max} {incr i} {
lappend vals $i
}
catchsql "SELECT max([join $vals ,])"
} "0 [expr {$::max - 1}]"
do_test sqllimits1-11.$max.2 {
set vals [list]
for {set i 0} {$i <= $::max} {incr i} {
lappend vals $i
}
catchsql "SELECT max([join $vals ,])"
} {1 {too many arguments on function max}}
# Test that it is SQLite, and not the implementation of the
# user function that is throwing the error.
proc myfunc {args} {error "I don't like to be called!"}
do_test sqllimits1-11.$max.2 {
db function myfunc myfunc
set vals [list]
for {set i 0} {$i <= $::max} {incr i} {
lappend vals $i
}
catchsql "SELECT myfunc([join $vals ,])"
} {1 {too many arguments on function myfunc}}
}
#--------------------------------------------------------------------
# Test cases sqllimits1-12.*: Test the SQLITE_MAX_ATTACHED limit.
#
ifcapable attach {
do_test sqllimits1-12.1 {
set max $::SQLITE_MAX_ATTACHED
for {set i 0} {$i < ($max)} {incr i} {
forcedelete test${i}.db test${i}.db-journal
}
for {set i 0} {$i < ($max)} {incr i} {
execsql "ATTACH 'test${i}.db' AS aux${i}"
}
catchsql "ATTACH 'test${i}.db' AS aux${i}"
} "1 {too many attached databases - max $::SQLITE_MAX_ATTACHED}"
do_test sqllimits1-12.2 {
set max $::SQLITE_MAX_ATTACHED
for {set i 0} {$i < ($max)} {incr i} {
execsql "DETACH aux${i}"
}
} {}
}
#--------------------------------------------------------------------
# Test cases sqllimits1-13.*: Check that the SQLITE_MAX_VARIABLE_NUMBER
# limit works.
#
do_test sqllimits1-13.1 {
set max $::SQLITE_MAX_VARIABLE_NUMBER
catchsql "SELECT ?[expr {$max+1}] FROM t1"
} "1 {variable number must be between ?1 and ?$::SQLITE_MAX_VARIABLE_NUMBER}"
do_test sqllimits1-13.2 {
set max $::SQLITE_MAX_VARIABLE_NUMBER
set vals [list]
for {set i 0} {$i < ($max+3)} {incr i} {
lappend vals ?
}
catchsql "SELECT [join $vals ,] FROM t1"
} "1 {too many SQL variables}"
#--------------------------------------------------------------------
# Test cases sqllimits1-15.* verify that the
# SQLITE_MAX_LIKE_PATTERN_LENGTH limit is enforced. This limit only
# applies to the built-in LIKE operator, supplying an external
# implementation by overriding the like() scalar function bypasses
# this limitation.
#
# These tests check that the limit is not incorrectly applied to
# the left-hand-side of the LIKE operator (the string being tested
# against the pattern).
#
set SQLITE_LIMIT_LIKE_PATTERN 1000
sqlite3_limit db SQLITE_LIMIT_LIKE_PATTERN_LENGTH $SQLITE_LIMIT_LIKE_PATTERN
do_test sqllimits1-15.1 {
set max $::SQLITE_LIMIT_LIKE_PATTERN
set ::pattern [string repeat "A%" [expr $max/2]]
set ::string [string repeat "A" [expr {$max*2}]]
execsql {
SELECT $::string LIKE $::pattern;
}
} {1}
do_test sqllimits1-15.2 {
set max $::SQLITE_LIMIT_LIKE_PATTERN
set ::pattern [string repeat "A%" [expr {($max/2) + 1}]]
set ::string [string repeat "A" [expr {$max*2}]]
catchsql {
SELECT $::string LIKE $::pattern;
}
} {1 {LIKE or GLOB pattern too complex}}
#--------------------------------------------------------------------
# This test case doesn't really belong with the other limits tests.
# It is in this file because it is taxing to run, like the limits tests.
#
do_test sqllimits1-16.1 {
set ::N [expr int(([expr pow(2,32)]/50) + 1)]
expr (($::N*50) & 0xffffffff)<55
} {1}
do_test sqllimits1-16.2 {
set ::format "[string repeat A 60][string repeat "%J" $::N]"
catchsql {
SELECT strftime($::format, 1);
}
} {1 {string or blob too big}}
foreach {key value} [array get saved] {
catch {set $key $value}
}
finish_test