sql-delete

I tried to truncate a table with foreign keys and got the message: " Cannot truncate table because it is being referenced by a FOREIGN KEY constraint ". I read a lot of literature about the problem and thought that I found the solution by using delete DELETE FROM table_name DBCC CHECKIDENT (table_name, RESEED, 0) But I still got an error message: " The DELETE statement conflicted with the REFERENCE constraint ". When I try to delete with Microsoft Management Studio and execute the previous query DELETE FROM table_name DBCC CHECKIDENT (table_name, RESEED, 0) it doesn't give an error and works

Using PHP, I have a simple database that may store multiple items with the same content. I want to delete the first occurrence of an instance when I use DELETE. How do you enable LIMIT for DELETE in SQLite using PHP? You cannot enable these options from within PHP, you need to compile SQLite yourself in order to enable these options. Importantly, you need to download the full version, not the amalgamation source release from SQLite download page . If you're on Unix, get the sqlite-3.6.20.tar.gz tarball and download it. Then: tar xzf sqlite-3.6.20.tar.gz cd sqlite-3.6.20 export CFLAGS='-DSQLITE

I'm trying to use SQL to delete multiple rows from multiple tables that are joined together. Table A is joined to Table B Table B is joined to Table C I want to delete all rows in table B & C that correspond to a row in Table A CREATE TABLE `boards` ( `boardid` int(2) NOT NULL AUTO_INCREMENT, `boardname` varchar(255) NOT NULL DEFAULT '', PRIMARY KEY (`boardid`) ); -- -------------------------------------------------------- -- -- Table structure for table `messages` -- CREATE TABLE `messages` ( `messageid` int(6) NOT NULL AUTO_INCREMENT, `boardid` int(2) NOT NULL DEFAULT '0', `topicid` int(4)

I am attempting to use the DELETE clause in MS Access and have an issue when also using the JOIN clause. I have notice this can be accomplished by using the DISTINCTROW key word. For example, the following SQL statement does not allow for deletion: DELETE Table1.* FROM Table1 INNER JOIN Table2 ON Table1.Name=Table2.Name; However, this statement does: DELETE DISTINCTROW Table1.* FROM Table1 INNER JOIN Table2 ON Table1.Name=Table2.Name; Why does the DELETE work when using the DISTINCTROW key word? More specifically, what is happening in the JET engine to require this? Delete Table1.* From Table1