## 例

`

     resource pg_query ([ resource $connection ], string $query )

`

## 説明

pg_query() executes the query on the specified database connection. If an error occurs, and FALSE is returned, details of the error can be retrieved using the pg_last_error() function if the connection is valid. Note: Although connection can be omitted, it is not recommended, since it can be the cause of hard to find bugs in scripts. Note: This function used to be called pg_exec(). pg_exec() is still available for compatibility reasons, but users are encouraged to use the newer name.

## 戻り値

A query result resource on success or FALSE on failure.