Re: BUG #2189: Prepared Statement is not parsed correctly

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Kris Senden wrote:
>
> The following bug has been logged online:
>
> Bug reference: 2189
> Logged by: Kris Senden
> Email address: kris(dot)senden(at)realsoftware(dot)be
> PostgreSQL version: 8.0.2
> Operating system: Windows XP/2K/2003
> Description: Prepared Statement is not parsed correctly
> Details:
>
> Recently we discovered a defect in the jdbc driver of PostgreSQL. It is
> detected in version 8.1dev-401 and also found in all later versions. The
> problem is that we had a faulty SQL statement in our code that was partly
> executed by the jdbc-driver without any warning or error log.
> The statement is SELECT * FROM POSTransaction WHERE DatTransEnd = (SELECT
> MAX(DatTransEnd) FROM POSTransaction WHERE IdtCheckout = 9 AND FlgTraining =
> ?) AND IdtCheckout = 9 AND FlgTraining = ?) ORDER BY HouTransEnd DESC. As
> you can see this statement contains 1 closing bracket ('(') too much.
> However while debugging the driver I saw that the problem is caused in
> method AbstractJdbc2Statement.parseSql(String, int, StringBuffer, boolean)
> throws SQLException. In that method a counter is activated which holds the
> number of open brackets. Each time it encounters a ( it adds one and each
> time it encounters a ) it substracts one. When the counter's value is less
> than zero, the parsings stops.
> In our case, this resulted that our sql statement was shortened to SELECT *
> FROM POSTransaction WHERE DatTransEnd = (SELECT MAX(DatTransEnd) FROM
> POSTransaction WHERE IdtCheckout = 9 AND FlgTraining = ?) AND IdtCheckout =
> 9 AND FlgTraining = ?
> When executing the same query in pgAdmin III Query, I got a syntax error :
> ERROR: syntax error at or near ")" at character 136. I would expected to
> have the same syntax error using the prepared statement.
>
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