(PHP 5, PECL sqlite >= 1.0.0)
sqlite_query -- SQLiteDatabase->query — Executes a query against a given database and returns a result handle
Object oriented style (method):
Executes an SQL statement given by the query against a given database handle.
The SQLite Database resource; returned from sqlite_open() when used procedurally. This parameter is not required when using the object-oriented method.
The query to be executed.
Data inside the query should be properly escaped.
El parámetro opcional result_type acepta una constante y determina cómo se indexará el array devuelto. Usar SQLITE_ASSOC devolverá índices asociativos (los nombres de los campos) mientras que SQLITE_NUM devolverá sólo índices numéricos (los campos en números ordinales). SQLITE_BOTH devolverá índices tanto asociativos como numéricos. SQLITE_BOTH es el valor por defecto para esta función.
The specified variable will be filled if an error occurs. This is specially important because SQL syntax errors can't be fetched using the sqlite_last_error() function.
Note: Dos sintaxis alternativas son soportadas para la compatibilidad con otras extensiones de base de datos (tal como MySQL). La forma preferida es la primera, donde el parámetro dbhandle es el primero de la función.
This function will return a result handle o FALSE en caso de error. For queries that return rows, the result handle can then be used with functions such as sqlite_fetch_array() and sqlite_seek().
Regardless of the query type, this function will return FALSE if the query failed.
sqlite_query() returns a buffered, seekable result handle. This is useful for reasonably small queries where you need to be able to randomly access the rows. Buffered result handles will allocate memory to hold the entire result and will not return until it has been fetched. If you only need sequential access to the data, it is recommended that you use the much higher performance sqlite_unbuffered_query() instead.
Versión | Descripción |
---|---|
5.1.0 | Added the error_msg parameter |
SQLite will execute multiple queries separated by semicolons, so you can use it to execute a batch of SQL that you have loaded from a file or have embedded in a script. However, this works only when the result of the function is not used - if it is used, only the first SQL statement would be executed. Function sqlite_exec() will always execute multiple SQL statements.
When executing multiple queries, the return value of this function will be FALSE if there was an error, but undefined otherwise (it might be TRUE for success or it might return a result handle).