membender:

Not all databases allow you to submit multiple statements in a batch. But if you're using one that does, there shouldn't be a problem. However, you haven't showed any code, so it's possible that your problem is related to string handling and/or error handling rather than multiple statements in a batch. Something like this should be fine:

my $SQL1 = q{
SET @t_id:=(SELECT Team_ID FROM Teams WHERE Name='Boston');
SELECT * FROM Games WHERE Team_ID=@t_id AND Date>'2012-05-01';
};

[download]

while something like these will fail because perl will try to put the value of @t_id into the string for you, which will usually cause the SQL to fail:

my $SQL2 = "
SET @t_id:=(SELECT Team_ID FROM Teams WHERE Name='Boston');
SELECT * FROM Games WHERE Team_ID=@t_id AND Date>'2012-05-01';
";
my $SQL3 = <<EOSQL;
SET @t_id:=(SELECT Team_ID FROM Teams WHERE Name='Boston');
SELECT * FROM Games WHERE Team_ID=@t_id AND Date>'2012-05-01';
EOSQL

[download]

But we can't tell what the error is, because you've provided no code nor error messages. So it's purely a shot in the dark.

...roboticus

When your only tool is a hammer, all problems look like your thumb.

In reply to Re: Executing multiple mysql commands in a single execute() call. by roboticus
in thread Executing multiple mysql commands in a single execute() call. by membender

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