Prepare a query for later execution

说明

ingres_prepare ( resource $link , string $query ) : mixed

Prepares a query for execution by ingres_execute().

The query becomes part of the currently open transaction. If there is no open transaction, ingres_query() opens a new transaction. To close the transaction, you can call either ingres_commit() to commit the changes made to the database or ingres_rollback() to cancel these changes. When the script ends, any open transaction is rolled back (by calling ingres_rollback()). You can also use ingres_autocommit() before opening a new transaction to have every SQL query immediately committed.

注意: Related Configurations

See also the ingres.describe, ingres.scrollable and ingres.utf8 directives in Runtime Configuration.

参数

link: The connection link identifier
query: A valid SQL query (see the Ingres SQL reference guide) in the Ingres documentation. See the query parameter in ingres_query() for a list of SQL statements which cannot be executed using ingres_prepare()

返回值

ingres_prepare() returns a query result identifier that is used with ingres_execute() to execute the query. To see if an error occurred, use ingres_errno(), ingres_error(), or ingres_errsqlstate().

参见

ingres_unbuffered_query() - Send an unbuffered SQL query to Ingres
ingres_fetch_array() - Fetch a row of result into an array
ingres_fetch_assoc() - Fetch a row of result into an associative array
ingres_fetch_object() - Fetch a row of result into an object
ingres_fetch_row() - Fetch a row of result into an enumerated array
ingres_commit() - Commit a transaction
ingres_rollback() - Roll back a transaction
ingres_autocommit() - Switch autocommit on or off
ingres_set_environment() - Set environment features controlling output options
ingres_errno() - Get the last Ingres error number generated
ingres_error() - Get a meaningful error message for the last error generated