Re^4: SQL Insert with blank in the middle

Thanks everyone for your input. This works like a charm - thanks a lot.

$mystreet=$_;
$dbh2->do("INSERT INTO PerlTest (Postcode,Street,streetCount) VALUES (
+?,?,?)", undef, '', $mystreet, 0);
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Not sure what "undef" does though. I also dont understand why putting it into a variable makes it work as it seems to need quotes around it so it doesnt split it into two words, as in the "high" and "street" example. Street is a just a varchar for info and it was on sql server for anybody else coming to this topic.

CREATE TABLE [dbo].[PerlTest](
    [Postcode] [varchar](50) NULL,
    [Street] [varchar](50) NULL,
    [streetCount] [int] NULL
) ON [PRIMARY]
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Re^5: SQL Insert with blank in the middle by mje (Curate) on Jul 12, 2010 at 09:21 UTC
Not sure what "undef" does though. The undef in your do call is for attributes to pass to the do method (I've never seen anyone use those but I guess it may apply if you want an attribute passed to the prepare method) - see DBI. I also dont understand why putting it into a variable makes it work... The difference between what you were doing (which did not work) and what you are doing is you were passing you insert data in the SQL string before and now you are passing it as a parameter: before "insert into mytable (x) values($street)" results in insert into mytable(x) values(high street)" which will not parse correctly because of the unquoted "high street". now you are using insert into mytable(x) values(?)" which does parse correctly and the DBD passes the $street variable as a bound parameter which does not need quoting (as it is not in the SQL string) and the driver takes all of the string as the replacement parameter.	[reply]

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Re^5: SQL Insert with blank in the middle
by mje (Curate) on Jul 12, 2010 at 09:21 UTC

Not sure what "undef" does though.

The undef in your do call is for attributes to pass to the do method (I've never seen anyone use those but I guess it may apply if you want an attribute passed to the prepare method) - see DBI.

I also dont understand why putting it into a variable makes it work...

The difference between what you were doing (which did not work) and what you are doing is you were passing you insert data in the SQL string before and now you are passing it as a parameter:

before "insert into mytable (x) values($street)" results in insert into mytable(x) values(high street)" which will not parse correctly because of the unquoted "high street".

now you are using insert into mytable(x) values(?)" which does parse correctly and the DBD passes the $street variable as a bound parameter which does not need quoting (as it is not in the SQL string) and the driver takes all of the string as the replacement parameter.

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