> You can't split a transaction between multiple calls to
> mssql_query. The memory used (in the server and client)
> are cleared between each call.
Are you sure?
Because this denies that:
mssql_query("SELECT @@TRANCOUNT"); // returns 0
mssql_query("BEGIN TRANSACTION");
mssql_query("SELECT @@TRANCOUNT"); // returns 1
mssql_query("INSERT INTO TABLE (DATE) VALUES ('$date')");
mssql_query("SELECT @@TRANCOUNT"); // returns 1 if previous INSERT
INTO was completed successfully, 0 if not. It looks like an error
will cause auto ROLLBACK TRANSACTION!
If INSERT INTO is completed successfully, I can call mssql_query
with ROLLBACK/COMMIT TRANSACTION and they work fine.
They don't work only if there was an error during INSERT INTO.
>> I have an opened connection to MS SQL Server 7
>> and I try to do this:
>>
>> $commit = FALSE;
>>
>> // SELECT @@TRANCOUNT returns 0 here = OK
>>
>> if(mssql_query("BEGIN TRANSACTION")) {
>>
>> // SELECT @@TRANCOUNT returns 1 here = OK
>>
>> if(mssql_query("INSERT INTO TABLE (DATE) VALUES ('$date')")) {
>>
>> // ...
>>
>> $commit = TRUE;
>> }
>>
>> if($commit) {
>> mssql_query("COMMIT TRANSACTION");
>> return TRUE;
>> }
>> else {
>> mssql_query("ROLLBACK TRANSACTION");
>> return FALSE;
>> }
>> }
>> else
>> return FALSE;
>>
>> When INSERT is done without errors, everything is OK.
>> But when it is not possible to insert data into a table
>> for any reason, SQL server returns this error message:
>>
>> The ROLLBACK TRANSACTION request has no corresponding BEGIN
>> TRANSACTION. (severity 16) in ... .php
>>
>> But using SELECT @@TRANCOUNT I can check that TRANSACTION
>> is started, I tried to name the transaction, it didn't help.
>>
>> I thought it is because I can't COMMIT/ROLLBACK empty
>> transaction, but this works fine:
>>
>> mssql_query("BEGIN TRANSACTION");
>> mssql_query("ROLLBACK TRANSACTION");
>>
>> What's wrong?!?
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