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SQLITE_UNBUFFERED_QUERY(3) SQLITE_UNBUFFERED_QUERY(3)
sqlite_unbuffered_query - Execute a query that does not prefetch and buffer all data
SYNOPSIS
resource sqlite_unbuffered_query (resource $dbhandle, string $query, [int $result_type = SQLITE_BOTH], [string &$error_msg])
DESCRIPTION
resource sqlite_unbuffered_query (string $query, resource $dbhandle, [int $result_type = SQLITE_BOTH], [string &$error_msg])
Object oriented style (method): SQLiteUnbuffered SQLiteDatabase::unbufferedQuery (string $query, [int $result_type = SQLITE_BOTH],
[string &$error_msg])
sqlite_unbuffered_query(3) is identical to sqlite_query(3) 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 ran-
domly access the row data.
Note
Functions such as sqlite_seek(3), sqlite_rewind(3), sqlite_next(3), sqlite_current(3), and sqlite_num_rows(3) do not work on result
handles returned from sqlite_unbuffered_query(3).
PARAMETERS
o $dbhandle
- The SQLite Database resource; returned from sqlite_open(3) when used procedurally. This parameter is not required when using the
object-oriented method.
o $query
- The query to be executed. Data inside the query should be properly escaped.
o $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.
o $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(3) function.
Note
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(3) 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 |
| | |
+--------+---------------------------------+
SEE ALSO
sqlite_query(3).
PHP Documentation Group SQLITE_UNBUFFERED_QUERY(3)
