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# sqlite_unbuffered_query

(PHP 5)

sqlite_unbuffered_query

(no version information, might be only in CVS)

SQLiteDatabase->unbufferedQuery -- Execute a query that does not prefetch and buffer all data

## Description

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):

class SQLiteDatabase {
SQLiteUnbuffered 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.

> 注: 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().

## Parameters

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.

result_type

  The optional result_type parameter accepts a constant and determines how the returned array will be indexed. Using `SQLITE_ASSOC` will return only associative indices (named fields) while `SQLITE_NUM` will return only numerical indices (ordinal field numbers). `SQLITE_BOTH` will return both associative and numerical indices. `SQLITE_BOTH` is the default for this function.

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.

> 注: Two alternative syntaxes are supported for compatibility with other database extensions (such as MySQL). The preferred form is the first, where the dbhandle parameter is the first parameter to the function.

## Return Values

Returns a result handle or `FALSE` on failure.

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

## ChangeLog

Version | Description
--- | ---
5.1.0 | Added the error_msg parameter

## �Ѧ�

sqlite_query()

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