SQLite

# 2001 September 15
#
# 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 DELETE FROM statement.
#
# $Id: delete.test,v 1.12 2003/05/04 20:42:56 drh Exp $

set testdir [file dirname $argv0]
source $testdir/tester.tcl

# Try to delete from a non-existant table.
#
do_test delete-1.1 {

    INSERT INTO t3 SELECT a+2 FROM t3;
    CREATE TABLE t4 AS SELECT * FROM t3;
    PRAGMA count_changes=ON;
    DELETE FROM t3;
    DELETE FROM t4;
  }
} {4 4}

# Make sure error messages are consistent when attempting to delete
# from a read-only database.  Ticket #304.
#
do_test delete-8.0 {
  execsql {
    PRAGMA count_changes=OFF;
    INSERT INTO t3 VALUES(123);
    SELECT * FROM t3;
  }
} {123}
db close
catch {file attributes test.db -permissions 0444}
catch {file attributes test.db -readonly 1}
sqlite db test.db
do_test delete-8.1 {
  catchsql {
    DELETE FROM t3;
  }
} {1 {attempt to write a readonly database}}
do_test delete-8.2 {
  execsql {SELECT * FROM t3} 
} {123}
do_test delete-8.3 {
  catchsql {
    DELETE FROM t3 WHERE 1;
  }
} {1 {attempt to write a readonly database}}
do_test delete-8.4 {
  execsql {SELECT * FROM t3} 
} {123}
do_test delete-8.5 {
  catchsql {
    DELETE FROM t3 WHERE a<100;
  }
} {0 {}}
do_test delete-8.6 {
  execsql {SELECT * FROM t3}
} {123}


finish_test