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sqlite_unbuffered_query

SQLiteDatabase->unbufferedQuery

(PHP 5, PECL sqlite >= 1.0.0)

sqlite_unbuffered_query -- SQLiteDatabase->unbufferedQueryExecute a query that does not prefetch and buffer all data

Descripción

resource sqlite_unbuffered_query ( resource $dbhandle , string $query [, int $result_type [, string &$error_msg ]] )
resource sqlite_unbuffered_query ( string $query , resource $dbhandle [, int $result_type [, string &$error_msg ]] )

Object oriented style (method):

SQLiteUnbuffered SQLiteDatabase::unbufferedQuery ( string $query [, int $result_type [, string &$error_msg ]] )

sqlite_unbuffered_query() is identical to sqlite_query() except that the result that is returned is a sequential forward-only result set that can only be used to read each row, one after the other.

This function is ideal for generating things such as HTML tables where you only need to process one row at a time and don't need to randomly access the row data.

Note:

Functions such as sqlite_seek(), sqlite_rewind(), sqlite_next(), sqlite_current(), and sqlite_num_rows() do not work on result handles returned from sqlite_unbuffered_query().

Parámetros

dbhandle

The SQLite Database resource; returned from sqlite_open() when used procedurally. This parameter is not required when using the object-oriented method.

query

The query to be executed.

Data inside the query should be properly escaped.

result_type

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.

error_msg

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.

Valores devueltos

Returns a result handle o FALSE en caso de error.

sqlite_unbuffered_query() returns a sequential forward-only result set that can only be used to read each row, one after the other.

Historial de cambios

Versión Descripción
5.1.0 Added the error_msg parameter

Ver también


SQLite Funciones
PHP Manual