java.sql.Statement is an SQL statement interface.
Description
java.sql.Statement is used for executing a static SQL statement and returning the execution results.
By default, only one ResultSet object can be opened for each Statement object at a given time. Therefore, only ResultSet objects generated by different Statement objects can be read in an interleaved manner. If an open ResultSet object exists, all execution methods in the Statement interface implicitly close the current ResultSet object of the statement.
Methods
| Method | Return type | Description | Supported in Oracle mode | Supported in MySQL mode |
|---|---|---|---|---|
| executeQuery(String sql) | ResultSet | Executes an SQL query that returns a single ResultSet object. |
Yes | Yes |
| executeUpdate(String sql) | int | Executes an INSERT, UPDATE, or DELETE statement and returns the number of affected rows. |
Yes | Yes |
| close() | void | Closes a Statement object and releases its resources. |
Yes | Yes |
| getMaxFieldSize() | int | Obtains the maximum column size of a result set. | Yes | Yes |
| setMaxFieldSize(int max) | void | Sets the maximum column size of a result set. | Yes | Yes |
| getMaxRows() | int | Obtains the maximum number of rows that can be contained in any ResultSet object produced by a Statement object. |
Yes | Yes |
| setMaxRows(int max) | void | Sets the maximum number of rows that can be contained in any ResultSet object produced by a Statement object. |
Yes. This parameter takes effect in OceanBase Connector/J V2.4.11 and later. | Yes |
| setEscapeProcessing(boolean enable) | void | Specifies whether to enable SQL escape processing. | Yes | Yes |
| getQueryTimeout() | int | Obtains the query timeout period, in seconds. | Yes | Yes |
| setQueryTimeout(int seconds) | void | Sets the query timeout period, in seconds. | Yes | Yes |
| cancel() | void | Cancels the current execution of a Statement object. |
Yes | Yes |
| getWarnings() | SQLWarning | Obtains the warnings generated during the execution of a Statement object. |
Yes | Yes |
| clearWarnings() | void | Clears all warnings generated on a Statement object. |
Yes | Yes |
| setCursorName(String name) | void | Sets the cursor name of a ResultSet object. This method is not supported in either MySQL or Oracle mode. |
No | No |
| getResultSet() | ResultSet | Obtains the current ResultSet object. |
Yes | Yes |
| getUpdateCount() | int | Obtains the number of rows affected by an update operation. | Yes | Yes |
| getMoreResults() | Boolean | Moves to the next result. | Yes | Yes |
| setFetchDirection(int direction) | void | Sets the fetch direction of a ResultSet object. This method is not supported in either MySQL or Oracle mode. |
No | No |
| getFetchDirection() | int | Obtains the fetch direction of a ResultSet object. |
Yes | Yes |
| setFetchSize(int rows) | void | Sets the fetch size (number of rows) of a Statement object. |
Yes | Yes |
| getFetchSize() | int | Obtains the fetch size of a Statement object. |
Yes | Yes |
| getResultSetConcurrency() | int | Obtains the concurrency mode of a ResultSet object. |
Yes | Yes |
| getResultSetType() | int | Obtains the type of a ResultSet object. |
Yes | Yes |
| addBatch(String sql) | void | Adds an SQL command to the list of commands that will be executed as a batch. | Yes | Yes |
| clearBatch() | void | Clears the list of commands that will be executed as a batch. | Yes | Yes |
| executeBatch() | int[] | Executes a batch of commands and returns an array of update counts. | Yes | Yes |
| getConnection() | Connection | Obtains the Connection object that produced this Statement object. |
Yes | Yes |
| getGeneratedKeys() | ResultSet | Obtains the auto-generated keys created after an INSERT statement is executed. If the configuration compatibleOjdbcVersion=8&useArrayBinding=true&useOraclePrepareExecute=true is specified in Oracle mode, the RETURNING...INTO.. clause can be used to implement the getGeneratedKeys() method for obtaining the batch operation result set. |
Yes | Yes |
| execute(String sql, int autoGeneratedKeys) | Boolean | Executes a given SQL statement, and instructs the driver whether to make any auto-generated keys available for retrieval. | Yes | Yes |
| execute(String sql, int columnIndexes[]) | Boolean | Executes a given SQL statement, and instructs the driver whether to make only the auto-generated keys corresponding to columns specified in the columnIndexes[] array available for retrieval. |
Yes | Yes |
| execute(String sql, String columnNames[]) | Boolean | Executes the given SQL statement, and instructs the driver whether to make only the auto-generated keys corresponding to columns specified in the columnNames[] array available for retrieval. |
Yes | Yes |
| getResultSetHoldability() | int | Obtains the holdability of a ResultSet object. |
Yes | Yes |
| isClosed() | Boolean | Verifies whether a Statement object has been closed. |
Yes | Yes |
| setPoolable(boolean poolable) | void | Specifies whether the application can pool a Statement object. |
No | No |
| isPoolable() | Boolean | Verifies whether a Statement object is poolable. |
Yes | Yes |
| closeOnCompletion() | void | Specifies to close a Statement object when all its dependent ResultSet objects are closed. |
Yes | Yes |
| isCloseOnCompletion() | Boolean | Verifies whether a Statement object will be closed when all its dependent ResultSet objects are closed. |
Yes | Yes |
| getLargeUpdateCount() | long | Obtains the number of rows affected by an update operation. This method is used when the returned row count is large. | Yes | Yes |
| setLargeMaxRows(long max) | void | Sets the maximum number of rows that can be contained in any ResultSet object produced by a Statement object. This method is used when the row limit is large. |
Yes | Yes |
| getLargeMaxRows() | long | Obtains the maximum number of rows that can be contained in any ResultSet object produced by a Statement object. This method is used when the returned row limit is large. |
Yes | Yes |
| executeLargeBatch() | long[] | Executes a batch of commands and returns an array of update counts. This method is used when the returned row count is large. | Yes | Yes |
| executeLargeUpdate(String sql) | long | Executes a given SQL statement. This method is applicable to update operations and is used when the returned row count is large. | Yes | Yes |
| executeLargeUpdate(String sql, int autoGeneratedKeys) | long | Executes a given SQL statement and instructs the driver whether to make any auto-generated keys available for retrieval. This method is used when the returned row count is large. | Yes | Yes |
| executeLargeUpdate(String sql, int columnIndexes[]) | long | Executes a given SQL statement and instructs the driver whether to make only the auto-generated keys corresponding to the columns specified in the columnIndexes[] array available for retrieval. This method is used when the returned row count is large. |
Yes | Yes |
| executeLargeUpdate(String sql,String columnNames[]) | long | Executes a given SQL statement and instructs the driver whether to make only the auto-generated keys corresponding to the columns specified in the columnNames[] array available for retrieval. This method is used when the returned row count is large. |
Yes | Yes |
