JdbcStatement (H2 Database Engine 2.0.0 API)

java.lang.Object
- org.h2.message.TraceObject
- - org.h2.jdbc.JdbcStatement

所有已实现的接口:

AutoCloseable, Statement, Wrapper, JdbcStatementBackwardsCompat

直接已知子类:

JdbcPreparedStatement
```
public class JdbcStatement
extends TraceObject
implements Statement, JdbcStatementBackwardsCompat
```
Represents a statement.
Thread safety: the statement is not thread-safe. If the same statement is used by multiple threads access to it must be synchronized. The single synchronized block must include execution of the command and all operations with its result.
```
 synchronized (stat) {
     try (ResultSet rs = stat.executeQuery(queryString)) {
         while (rs.next) {
             // Do something
         }
     }
 }
 synchronized (stat) {
     updateCount = stat.executeUpdate(commandString);
 }
 
```

字段概要

字段
限定符和类型	字段和说明
`protected JdbcConnection`	`conn`
`protected int`	`fetchSize`
`protected JdbcResultSet`	`generatedKeys`
`protected long`	`maxRows`
`protected JdbcResultSet`	`resultSet`
`protected int`	`resultSetConcurrency`
`protected int`	`resultSetType`
`protected Session`	`session`
`protected long`	`updateCount`

从类继承的字段 org.h2.message.TraceObject
ARRAY, BLOB, CALLABLE_STATEMENT, CLOB, CONNECTION, DATA_SOURCE, DATABASE_META_DATA, PARAMETER_META_DATA, PREPARED_STATEMENT, RESULT_SET, RESULT_SET_META_DATA, SAVEPOINT, SQLXML, STATEMENT, trace, XA_DATA_SOURCE, XID

从接口继承的字段 java.sql.Statement
CLOSE_ALL_RESULTS, CLOSE_CURRENT_RESULT, EXECUTE_FAILED, KEEP_CURRENT_RESULT, NO_GENERATED_KEYS, RETURN_GENERATED_KEYS, SUCCESS_NO_INFO

方法概要

所有方法实例方法具体方法
限定符和类型	方法和说明
`void`	`addBatch(String sql)` Adds a statement to the batch.
`void`	`cancel()` Cancels a currently running statement.
`void`	`clearBatch()` Clears the batch.
`void`	`clearWarnings()` Clears all warnings.
`void`	`close()` Closes this statement.
`protected void`	`closeOldResultSet()` INTERNAL.
`void`	`closeOnCompletion()` Specifies that this statement will be closed when its dependent result set is closed.
`String`	`enquoteIdentifier(String identifier, boolean alwaysQuote)` Enquotes the specified identifier.
`boolean`	`execute(String sql)` Executes a statement and returns type of its result.
`boolean`	`execute(String sql, int autoGeneratedKeys)` Executes a statement and returns type of its result.
`boolean`	`execute(String sql, int[] columnIndexes)` Executes a statement and returns type of its result.
`boolean`	`execute(String sql, String[] columnNames)` Executes a statement and returns type of its result.
`int[]`	`executeBatch()` Executes the batch.
`long[]`	`executeLargeBatch()` Executes the batch.
`long`	`executeLargeUpdate(String sql)` Executes a statement (insert, update, delete, create, drop) and returns the update count.
`long`	`executeLargeUpdate(String sql, int autoGeneratedKeys)` Executes a statement and returns the update count.
`long`	`executeLargeUpdate(String sql, int[] columnIndexes)` Executes a statement and returns the update count.
`long`	`executeLargeUpdate(String sql, String[] columnNames)` Executes a statement and returns the update count.
`ResultSet`	`executeQuery(String sql)` Executes a query (select statement) and returns the result set.
`int`	`executeUpdate(String sql)` Executes a statement (insert, update, delete, create, drop) and returns the update count.
`int`	`executeUpdate(String sql, int autoGeneratedKeys)` Executes a statement and returns the update count.
`int`	`executeUpdate(String sql, int[] columnIndexes)` Executes a statement and returns the update count.
`int`	`executeUpdate(String sql, String[] columnNames)` Executes a statement and returns the update count.
`Connection`	`getConnection()` Returns the connection that created this object.
`int`	`getFetchDirection()` Gets the fetch direction.
`int`	`getFetchSize()` Gets the number of rows suggested to read in one step.
`ResultSet`	`getGeneratedKeys()` Return a result set with generated keys from the latest executed command or an empty result set if keys were not generated or were not requested with `Statement.RETURN_GENERATED_KEYS`, column indexes, or column names.
`long`	`getLargeMaxRows()` Gets the maximum number of rows for a ResultSet.
`long`	`getLargeUpdateCount()` Returns the last update count of this statement.
`int`	`getMaxFieldSize()` Gets the maximum number of bytes for a result set column.
`int`	`getMaxRows()` Gets the maximum number of rows for a ResultSet.
`boolean`	`getMoreResults()` Moves to the next result set - however there is always only one result set.
`boolean`	`getMoreResults(int current)` Move to the next result set.
`int`	`getQueryTimeout()` Gets the current query timeout in seconds.
`ResultSet`	`getResultSet()` Returns the last result set produces by this statement.
`int`	`getResultSetConcurrency()` Gets the result set concurrency created by this object.
`int`	`getResultSetHoldability()` Gets the result set holdability.
`int`	`getResultSetType()` Gets the result set type.
`int`	`getUpdateCount()` Returns the last update count of this statement.
`SQLWarning`	`getWarnings()` Gets the first warning reported by calls on this object.
`boolean`	`isCancelled()` Check whether the statement was cancelled.
`boolean`	`isClosed()` Returns whether this statement is closed.
`boolean`	`isCloseOnCompletion()` Returns whether this statement will be closed when its dependent result set is closed.
`boolean`	`isPoolable()` Returns whether this object is poolable.
`boolean`	`isSimpleIdentifier(String identifier)` Checks if specified identifier may be used without quotes.
`boolean`	`isWrapperFor(Class<?> iface)` Checks if unwrap can return an object of this class.
`void`	`setCursorName(String name)` Sets the name of the cursor.
`void`	`setEscapeProcessing(boolean enable)` Enables or disables processing or JDBC escape syntax.
`void`	`setFetchDirection(int direction)` Sets the fetch direction.
`void`	`setFetchSize(int rows)` Sets the number of rows suggested to read in one step.
`void`	`setLargeMaxRows(long maxRows)` Gets the maximum number of rows for a ResultSet.
`void`	`setMaxFieldSize(int max)` Sets the maximum number of bytes for a result set column.
`void`	`setMaxRows(int maxRows)` Gets the maximum number of rows for a ResultSet.
`void`	`setPoolable(boolean poolable)` Requests that this object should be pooled or not.
`void`	`setQueryTimeout(int seconds)` Sets the current query timeout in seconds.
`String`	`toString()` INTERNAL
`<T> T`	`unwrap(Class<T> iface)` Return an object of this class if possible.

从类继承的方法 org.h2.message.TraceObject
debugCode, debugCodeAssign, debugCodeCall, debugCodeCall, debugCodeCall, getNextId, getTraceId, getTraceObjectName, isDebugEnabled, isInfoEnabled, logAndConvert, quote, quoteArray, quoteBigDecimal, quoteBytes, quoteDate, quoteIntArray, quoteMap, quoteTime, quoteTimestamp, setTrace, unsupported

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- 字段详细资料
  - conn
```
protected JdbcConnection conn
```
  - session
```
protected Session session
```
  - resultSet
```
protected JdbcResultSet resultSet
```
  - maxRows
```
protected long maxRows
```
  - fetchSize
```
protected int fetchSize
```
  - updateCount
```
protected long updateCount
```
  - generatedKeys
```
protected JdbcResultSet generatedKeys
```
  - resultSetType
```
protected final int resultSetType
```
  - resultSetConcurrency
```
protected final int resultSetConcurrency
```
- 方法详细资料
  - executeQuery
```
public ResultSet executeQuery(String sql)
                       throws SQLException
```
    Executes a query (select statement) and returns the result set. If another result set exists for this statement, this will be closed (even if this statement fails).
    
    指定者:
    
    executeQuery 在接口中 Statement
    
    参数:
    
    sql - the SQL statement to execute
    
    返回:
    
    the result set
    
    抛出:
    
    SQLException
  - executeUpdate
```
public final int executeUpdate(String sql)
                        throws SQLException
```
    Executes a statement (insert, update, delete, create, drop) and returns the update count. This method is not allowed for prepared statements. If another result set exists for this statement, this will be closed (even if this statement fails). If auto commit is on, this statement will be committed. If the statement is a DDL statement (create, drop, alter) and does not throw an exception, the current transaction (if any) is committed after executing the statement.
    
    指定者:
    
    executeUpdate 在接口中 Statement
    
    参数:
    
    sql - the SQL statement
    
    返回:
    
    the update count (number of affected rows by a DML statement or other statement able to return number of rows, or 0 if no rows were affected or the statement returned nothing, or Statement.SUCCESS_NO_INFO if number of rows is too large for the int data type)
    
    抛出:
    
    SQLException - if a database error occurred or a select statement was executed
    
    另请参阅:
    
    executeLargeUpdate(String)
  - executeLargeUpdate
```
public final long executeLargeUpdate(String sql)
                              throws SQLException
```
    Executes a statement (insert, update, delete, create, drop) and returns the update count. This method is not allowed for prepared statements. If another result set exists for this statement, this will be closed (even if this statement fails). If auto commit is on, this statement will be committed. If the statement is a DDL statement (create, drop, alter) and does not throw an exception, the current transaction (if any) is committed after executing the statement.
    
    指定者:
    
    executeLargeUpdate 在接口中 Statement
    
    参数:
    
    sql - the SQL statement
    
    返回:
    
    the update count (number of affected rows by a DML statement or other statement able to return number of rows, or 0 if no rows were affected or the statement returned nothing)
    
    抛出:
    
    SQLException - if a database error occurred or a select statement was executed
  - execute
```
public final boolean execute(String sql)
                      throws SQLException
```
    Executes a statement and returns type of its result. This method is not allowed for prepared statements. If another result set exists for this statement, this will be closed (even if this statement fails). If the statement is a create or drop and does not throw an exception, the current transaction (if any) is committed after executing the statement. If auto commit is on, and the statement is not a select, this statement will be committed.
    
    指定者:
    
    execute 在接口中 Statement
    
    参数:
    
    sql - the SQL statement to execute
    
    返回:
    
    true if result is a result set, false otherwise
    
    抛出:
    
    SQLException
  - getResultSet
```
public ResultSet getResultSet()
                       throws SQLException
```
    Returns the last result set produces by this statement.
    
    指定者:
    
    getResultSet 在接口中 Statement
    
    返回:
    
    the result set
    
    抛出:
    
    SQLException
  - getUpdateCount
```
public final int getUpdateCount()
                         throws SQLException
```
    Returns the last update count of this statement.
    
    指定者:
    
    getUpdateCount 在接口中 Statement
    
    返回:
    
    the update count (number of affected rows by a DML statement or other statement able to return number of rows, or 0 if no rows were affected or the statement returned nothing, or -1 if statement was a query, or Statement.SUCCESS_NO_INFO if number of rows is too large for the int data type)
    
    抛出:
    
    SQLException - if this object is closed or invalid
    
    另请参阅:
    
    getLargeUpdateCount()
  - getLargeUpdateCount
```
public final long getLargeUpdateCount()
                               throws SQLException
```
    Returns the last update count of this statement.
    
    指定者:
    
    getLargeUpdateCount 在接口中 Statement
    
    返回:
    
    the update count (number of affected rows by a DML statement or other statement able to return number of rows, or 0 if no rows were affected or the statement returned nothing, or -1 if statement was a query)
    
    抛出:
    
    SQLException - if this object is closed or invalid
  - close
```
public void close()
           throws SQLException
```
    Closes this statement. All result sets that where created by this statement become invalid after calling this method.
    
    指定者:
    
    close 在接口中 AutoCloseable
    
    指定者:
    
    close 在接口中 Statement
    
    抛出:
    
    SQLException
  - getConnection
```
public Connection getConnection()
```
    Returns the connection that created this object.
    
    指定者:
    
    getConnection 在接口中 Statement
    
    返回:
    
    the connection
  - getWarnings
```
public SQLWarning getWarnings()
                       throws SQLException
```
    Gets the first warning reported by calls on this object. This driver does not support warnings, and will always return null.
    
    指定者:
    
    getWarnings 在接口中 Statement
    
    返回:
    
    null
    
    抛出:
    
    SQLException
  - clearWarnings
```
public void clearWarnings()
                   throws SQLException
```
    Clears all warnings. As this driver does not support warnings, this call is ignored.
    
    指定者:
    
    clearWarnings 在接口中 Statement
    
    抛出:
    
    SQLException
  - setCursorName
```
public void setCursorName(String name)
                   throws SQLException
```
    Sets the name of the cursor. This call is ignored.
    
    指定者:
    
    setCursorName 在接口中 Statement
    
    参数:
    
    name - ignored
    
    抛出:
    
    SQLException - if this object is closed
  - setFetchDirection
```
public void setFetchDirection(int direction)
                       throws SQLException
```
    Sets the fetch direction. This call is ignored by this driver.
    
    指定者:
    
    setFetchDirection 在接口中 Statement
    
    参数:
    
    direction - ignored
    
    抛出:
    
    SQLException - if this object is closed
  - getFetchDirection
```
public int getFetchDirection()
                      throws SQLException
```
    Gets the fetch direction.
    
    指定者:
    
    getFetchDirection 在接口中 Statement
    
    返回:
    
    FETCH_FORWARD
    
    抛出:
    
    SQLException - if this object is closed
  - getMaxRows
```
public int getMaxRows()
               throws SQLException
```
    Gets the maximum number of rows for a ResultSet.
    
    指定者:
    
    getMaxRows 在接口中 Statement
    
    返回:
    
    the number of rows where 0 means no limit
    
    抛出:
    
    SQLException - if this object is closed
  - getLargeMaxRows
```
public long getLargeMaxRows()
                     throws SQLException
```
    Gets the maximum number of rows for a ResultSet.
    
    指定者:
    
    getLargeMaxRows 在接口中 Statement
    
    返回:
    
    the number of rows where 0 means no limit
    
    抛出:
    
    SQLException - if this object is closed
  - setMaxRows
```
public void setMaxRows(int maxRows)
                throws SQLException
```
    Gets the maximum number of rows for a ResultSet.
    
    指定者:
    
    setMaxRows 在接口中 Statement
    
    参数:
    
    maxRows - the number of rows where 0 means no limit
    
    抛出:
    
    SQLException - if this object is closed
  - setLargeMaxRows
```
public void setLargeMaxRows(long maxRows)
                     throws SQLException
```
    Gets the maximum number of rows for a ResultSet.
    
    指定者:
    
    setLargeMaxRows 在接口中 Statement
    
    参数:
    
    maxRows - the number of rows where 0 means no limit
    
    抛出:
    
    SQLException - if this object is closed
  - setFetchSize
```
public void setFetchSize(int rows)
                  throws SQLException
```
    Sets the number of rows suggested to read in one step. This value cannot be higher than the maximum rows (setMaxRows) set by the statement or prepared statement, otherwise an exception is throws. Setting the value to 0 will set the default value. The default value can be changed using the system property h2.serverResultSetFetchSize.
    
    指定者:
    
    setFetchSize 在接口中 Statement
    
    参数:
    
    rows - the number of rows
    
    抛出:
    
    SQLException - if this object is closed
  - getFetchSize
```
public int getFetchSize()
                 throws SQLException
```
    Gets the number of rows suggested to read in one step.
    
    指定者:
    
    getFetchSize 在接口中 Statement
    
    返回:
    
    the current fetch size
    
    抛出:
    
    SQLException - if this object is closed
  - getResultSetConcurrency
```
public int getResultSetConcurrency()
                            throws SQLException
```
    Gets the result set concurrency created by this object.
    
    指定者:
    
    getResultSetConcurrency 在接口中 Statement
    
    返回:
    
    the concurrency
    
    抛出:
    
    SQLException
  - getResultSetType
```
public int getResultSetType()
                     throws SQLException
```
    Gets the result set type.
    
    指定者:
    
    getResultSetType 在接口中 Statement
    
    返回:
    
    the type
    
    抛出:
    
    SQLException - if this object is closed
  - getMaxFieldSize
```
public int getMaxFieldSize()
                    throws SQLException
```
    Gets the maximum number of bytes for a result set column.
    
    指定者:
    
    getMaxFieldSize 在接口中 Statement
    
    返回:
    
    always 0 for no limit
    
    抛出:
    
    SQLException - if this object is closed
  - setMaxFieldSize
```
public void setMaxFieldSize(int max)
                     throws SQLException
```
    Sets the maximum number of bytes for a result set column. This method does currently do nothing for this driver.
    
    指定者:
    
    setMaxFieldSize 在接口中 Statement
    
    参数:
    
    max - the maximum size - ignored
    
    抛出:
    
    SQLException - if this object is closed
  - setEscapeProcessing
```
public void setEscapeProcessing(boolean enable)
                         throws SQLException
```
    Enables or disables processing or JDBC escape syntax. See also Connection.nativeSQL.
    
    指定者:
    
    setEscapeProcessing 在接口中 Statement
    
    参数:
    
    enable - - true (default) or false (no conversion is attempted)
    
    抛出:
    
    SQLException - if this object is closed
  - cancel
```
public void cancel()
            throws SQLException
```
    Cancels a currently running statement. This method must be called from within another thread than the execute method. Operations on large objects are not interrupted, only operations that process many rows.
    
    指定者:
    
    cancel 在接口中 Statement
    
    抛出:
    
    SQLException - if this object is closed
  - isCancelled
```
public boolean isCancelled()
```
    Check whether the statement was cancelled.
    
    返回:
    
    true if yes
  - getQueryTimeout
```
public int getQueryTimeout()
                    throws SQLException
```
    Gets the current query timeout in seconds. This method will return 0 if no query timeout is set. The result is rounded to the next second. For performance reasons, only the first call to this method will query the database. If the query timeout was changed in another way than calling setQueryTimeout, this method will always return the last value.
    
    指定者:
    
    getQueryTimeout 在接口中 Statement
    
    返回:
    
    the timeout in seconds
    
    抛出:
    
    SQLException - if this object is closed
  - setQueryTimeout
```
public void setQueryTimeout(int seconds)
                     throws SQLException
```
    Sets the current query timeout in seconds. Changing the value will affect all statements of this connection. This method does not commit a transaction, and rolling back a transaction does not affect this setting.
    
    指定者:
    
    setQueryTimeout 在接口中 Statement
    
    参数:
    
    seconds - the timeout in seconds - 0 means no timeout, values smaller 0 will throw an exception
    
    抛出:
    
    SQLException - if this object is closed
  - addBatch
```
public void addBatch(String sql)
              throws SQLException
```
    Adds a statement to the batch.
    
    指定者:
    
    addBatch 在接口中 Statement
    
    参数:
    
    sql - the SQL statement
    
    抛出:
    
    SQLException
  - clearBatch
```
public void clearBatch()
                throws SQLException
```
    Clears the batch.
    
    指定者:
    
    clearBatch 在接口中 Statement
    
    抛出:
    
    SQLException
  - executeBatch
```
public int[] executeBatch()
                   throws SQLException
```
    Executes the batch. If one of the batched statements fails, this database will continue.
    
    指定者:
    
    executeBatch 在接口中 Statement
    
    返回:
    
    the array of update counts
    
    抛出:
    
    SQLException
    
    另请参阅:
    
    executeLargeBatch()
  - executeLargeBatch
```
public long[] executeLargeBatch()
                         throws SQLException
```
    Executes the batch. If one of the batched statements fails, this database will continue.
    
    指定者:
    
    executeLargeBatch 在接口中 Statement
    
    返回:
    
    the array of update counts
    
    抛出:
    
    SQLException
  - getGeneratedKeys
```
public ResultSet getGeneratedKeys()
                           throws SQLException
```
    Return a result set with generated keys from the latest executed command or an empty result set if keys were not generated or were not requested with Statement.RETURN_GENERATED_KEYS, column indexes, or column names.
    Generated keys are only returned from from INSERT, UPDATE, MERGE INTO, and MERGE INTO ... USING commands.
    
    If SQL command inserts or updates multiple rows with generated keys each such inserted or updated row is returned. Batch methods are also supported.
    
    When Statement.RETURN_GENERATED_KEYS is used H2 chooses columns to return automatically. The following columns are chosen:
    - Columns with sequences including IDENTITY columns and columns with AUTO_INCREMENT.
    - Columns with other default values that are not evaluated into constant expressions (like DEFAULT RANDOM_UUID()).
    - Columns that are included into the PRIMARY KEY constraint.
    Exact required columns for the returning result set may be specified on execution of command with names or indexes of columns.
    指定者:
    
    getGeneratedKeys 在接口中 Statement
    
    返回:
    
    the possibly empty result set with generated keys
    
    抛出:
    
    SQLException - if this object is closed
  - getMoreResults
```
public boolean getMoreResults()
                       throws SQLException
```
    Moves to the next result set - however there is always only one result set. This call also closes the current result set (if there is one). Returns true if there is a next result set (that means - it always returns false).
    
    指定者:
    
    getMoreResults 在接口中 Statement
    
    返回:
    
    false
    
    抛出:
    
    SQLException - if this object is closed.
  - getMoreResults
```
public boolean getMoreResults(int current)
                       throws SQLException
```
    Move to the next result set. This method always returns false.
    
    指定者:
    
    getMoreResults 在接口中 Statement
    
    参数:
    
    current - Statement.CLOSE_CURRENT_RESULT, Statement.KEEP_CURRENT_RESULT, or Statement.CLOSE_ALL_RESULTS
    
    返回:
    
    false
    
    抛出:
    
    SQLException
  - executeUpdate
```
public final int executeUpdate(String sql,
                               int autoGeneratedKeys)
                        throws SQLException
```
    Executes a statement and returns the update count. This method is not allowed for prepared statements.
    
    指定者:
    
    executeUpdate 在接口中 Statement
    
    参数:
    
    sql - the SQL statement
    
    autoGeneratedKeys - Statement.RETURN_GENERATED_KEYS if generated keys should be available for retrieval, Statement.NO_GENERATED_KEYS if generated keys should not be available
    
    返回:
    
    the update count (number of affected rows by a DML statement or other statement able to return number of rows, or 0 if no rows were affected or the statement returned nothing, or Statement.SUCCESS_NO_INFO if number of rows is too large for the int data type)
    
    抛出:
    
    SQLException - if a database error occurred or a select statement was executed
    
    另请参阅:
    
    executeLargeUpdate(String, int)
  - executeLargeUpdate
```
public final long executeLargeUpdate(String sql,
                                     int autoGeneratedKeys)
                              throws SQLException
```
    Executes a statement and returns the update count. This method is not allowed for prepared statements.
    
    指定者:
    
    executeLargeUpdate 在接口中 Statement
    
    参数:
    
    sql - the SQL statement
    
    autoGeneratedKeys - Statement.RETURN_GENERATED_KEYS if generated keys should be available for retrieval, Statement.NO_GENERATED_KEYS if generated keys should not be available
    
    返回:
    
    the update count (number of affected rows by a DML statement or other statement able to return number of rows, or 0 if no rows were affected or the statement returned nothing)
    
    抛出:
    
    SQLException - if a database error occurred or a select statement was executed
  - executeUpdate
```
public final int executeUpdate(String sql,
                               int[] columnIndexes)
                        throws SQLException
```
    Executes a statement and returns the update count. This method is not allowed for prepared statements.
    
    指定者:
    
    executeUpdate 在接口中 Statement
    
    参数:
    
    sql - the SQL statement
    
    columnIndexes - an array of column indexes indicating the columns with generated keys that should be returned from the inserted row
    
    返回:
    
    the update count (number of affected rows by a DML statement or other statement able to return number of rows, or 0 if no rows were affected or the statement returned nothing, or Statement.SUCCESS_NO_INFO if number of rows is too large for the int data type)
    
    抛出:
    
    SQLException - if a database error occurred or a select statement was executed
    
    另请参阅:
    
    executeLargeUpdate(String, int[])
  - executeLargeUpdate
```
public final long executeLargeUpdate(String sql,
                                     int[] columnIndexes)
                              throws SQLException
```
    Executes a statement and returns the update count. This method is not allowed for prepared statements.
    
    指定者:
    
    executeLargeUpdate 在接口中 Statement
    
    参数:
    
    sql - the SQL statement
    
    columnIndexes - an array of column indexes indicating the columns with generated keys that should be returned from the inserted row
    
    返回:
    
    the update count (number of affected rows by a DML statement or other statement able to return number of rows, or 0 if no rows were affected or the statement returned nothing)
    
    抛出:
    
    SQLException - if a database error occurred or a select statement was executed
  - executeUpdate
```
public final int executeUpdate(String sql,
                               String[] columnNames)
                        throws SQLException
```
    Executes a statement and returns the update count. This method is not allowed for prepared statements.
    
    指定者:
    
    executeUpdate 在接口中 Statement
    
    参数:
    
    sql - the SQL statement
    
    columnNames - an array of column names indicating the columns with generated keys that should be returned from the inserted row
    
    返回:
    
    the update count (number of affected rows by a DML statement or other statement able to return number of rows, or 0 if no rows were affected or the statement returned nothing, or Statement.SUCCESS_NO_INFO if number of rows is too large for the int data type)
    
    抛出:
    
    SQLException - if a database error occurred or a select statement was executed
    
    另请参阅:
    
    executeLargeUpdate(String, String[])
  - executeLargeUpdate
```
public final long executeLargeUpdate(String sql,
                                     String[] columnNames)
                              throws SQLException
```
    Executes a statement and returns the update count. This method is not allowed for prepared statements.
    
    指定者:
    
    executeLargeUpdate 在接口中 Statement
    
    参数:
    
    sql - the SQL statement
    
    columnNames - an array of column names indicating the columns with generated keys that should be returned from the inserted row
    
    返回:
    
    the update count (number of row affected by an insert, update or delete, or 0 if no rows or the statement was a create, drop, commit or rollback)
    
    抛出:
    
    SQLException - if a database error occurred or a select statement was executed
  - execute
```
public final boolean execute(String sql,
                             int autoGeneratedKeys)
                      throws SQLException
```
    Executes a statement and returns type of its result. This method is not allowed for prepared statements.
    
    指定者:
    
    execute 在接口中 Statement
    
    参数:
    
    sql - the SQL statement
    
    autoGeneratedKeys - Statement.RETURN_GENERATED_KEYS if generated keys should be available for retrieval, Statement.NO_GENERATED_KEYS if generated keys should not be available
    
    返回:
    
    true if result is a result set, false otherwise
    
    抛出:
    
    SQLException - if a database error occurred or a select statement was executed
  - execute
```
public final boolean execute(String sql,
                             int[] columnIndexes)
                      throws SQLException
```
    Executes a statement and returns type of its result. This method is not allowed for prepared statements.
    
    指定者:
    
    execute 在接口中 Statement
    
    参数:
    
    sql - the SQL statement
    
    columnIndexes - an array of column indexes indicating the columns with generated keys that should be returned from the inserted row
    
    返回:
    
    true if result is a result set, false otherwise
    
    抛出:
    
    SQLException - if a database error occurred or a select statement was executed
  - execute
```
public final boolean execute(String sql,
                             String[] columnNames)
                      throws SQLException
```
    Executes a statement and returns type of its result. This method is not allowed for prepared statements.
    
    指定者:
    
    execute 在接口中 Statement
    
    参数:
    
    sql - the SQL statement
    
    columnNames - an array of column names indicating the columns with generated keys that should be returned from the inserted row
    
    返回:
    
    true if result is a result set, false otherwise
    
    抛出:
    
    SQLException - if a database error occurred or a select statement was executed
  - getResultSetHoldability
```
public int getResultSetHoldability()
                            throws SQLException
```
    Gets the result set holdability.
    
    指定者:
    
    getResultSetHoldability 在接口中 Statement
    
    返回:
    
    the holdability
    
    抛出:
    
    SQLException
  - closeOnCompletion
```
public void closeOnCompletion()
                       throws SQLException
```
    Specifies that this statement will be closed when its dependent result set is closed.
    
    指定者:
    
    closeOnCompletion 在接口中 Statement
    
    抛出:
    
    SQLException - if this statement is closed
  - isCloseOnCompletion
```
public boolean isCloseOnCompletion()
                            throws SQLException
```
    Returns whether this statement will be closed when its dependent result set is closed.
    
    指定者:
    
    isCloseOnCompletion 在接口中 Statement
    
    返回:
    
    true if this statement will be closed when its dependent result set is closed
    
    抛出:
    
    SQLException - if this statement is closed
  - closeOldResultSet
```
protected void closeOldResultSet()
```
    INTERNAL. Close and old result set if there is still one open.
  - isClosed
```
public boolean isClosed()
                 throws SQLException
```
    Returns whether this statement is closed.
    
    指定者:
    
    isClosed 在接口中 Statement
    
    返回:
    
    true if the statement is closed
    
    抛出:
    
    SQLException
  - unwrap
```
public <T> T unwrap(Class<T> iface)
             throws SQLException
```
    Return an object of this class if possible.
    
    指定者:
    
    unwrap 在接口中 Wrapper
    
    参数:
    
    iface - the class
    
    返回:
    
    this
    
    抛出:
    
    SQLException
  - isWrapperFor
```
public boolean isWrapperFor(Class<?> iface)
                     throws SQLException
```
    Checks if unwrap can return an object of this class.
    
    指定者:
    
    isWrapperFor 在接口中 Wrapper
    
    参数:
    
    iface - the class
    
    返回:
    
    whether or not the interface is assignable from this class
    
    抛出:
    
    SQLException
  - isPoolable
```
public boolean isPoolable()
```
    Returns whether this object is poolable.
    
    指定者:
    
    isPoolable 在接口中 Statement
    
    返回:
    
    false
  - setPoolable
```
public void setPoolable(boolean poolable)
```
    Requests that this object should be pooled or not. This call is ignored.
    
    指定者:
    
    setPoolable 在接口中 Statement
    
    参数:
    
    poolable - the requested value
  - enquoteIdentifier
```
public String enquoteIdentifier(String identifier,
                                boolean alwaysQuote)
                         throws SQLException
```
    从接口复制的说明: JdbcStatementBackwardsCompat
    
    Enquotes the specified identifier.
    
    指定者:
    
    enquoteIdentifier 在接口中 JdbcStatementBackwardsCompat
    
    参数:
    
    identifier - identifier to quote if required, may be quoted or unquoted
    
    alwaysQuote - if true identifier will be quoted unconditionally
    
    返回:
    
    specified identifier quoted if required, explicitly requested, or if it was already quoted
    
    抛出:
    
    NullPointerException - if identifier is null
    
    SQLException - if identifier is not a valid identifier
  - isSimpleIdentifier
```
public boolean isSimpleIdentifier(String identifier)
                           throws SQLException
```
    从接口复制的说明: JdbcStatementBackwardsCompat
    
    Checks if specified identifier may be used without quotes.
    
    指定者:
    
    isSimpleIdentifier 在接口中 JdbcStatementBackwardsCompat
    
    参数:
    
    identifier - identifier to check
    
    返回:
    
    is specified identifier may be used without quotes
    
    抛出:
    
    NullPointerException - if identifier is null
    
    SQLException - on failure
  - toString
```
public String toString()
```
    INTERNAL
    
    覆盖:
    
    toString 在类中 Object

类 JdbcStatement

字段概要

从类继承的字段 org.h2.message.TraceObject

从接口继承的字段 java.sql.Statement

方法概要

从类继承的方法 org.h2.message.TraceObject

从类继承的方法 java.lang.Object

字段详细资料

conn

session

resultSet

maxRows

fetchSize

updateCount

generatedKeys

resultSetType

resultSetConcurrency

方法详细资料

executeQuery

executeUpdate

executeLargeUpdate

execute

getResultSet

getUpdateCount

getLargeUpdateCount

close

getConnection

getWarnings

clearWarnings

setCursorName

setFetchDirection

getFetchDirection

getMaxRows

getLargeMaxRows

setMaxRows

setLargeMaxRows

setFetchSize

getFetchSize

getResultSetConcurrency

getResultSetType

getMaxFieldSize

setMaxFieldSize

setEscapeProcessing

cancel

isCancelled

getQueryTimeout

setQueryTimeout

addBatch

clearBatch

executeBatch

executeLargeBatch

getGeneratedKeys

getMoreResults

getMoreResults

executeUpdate

executeLargeUpdate

executeUpdate

executeLargeUpdate

executeUpdate

executeLargeUpdate

execute

execute

execute

getResultSetHoldability

closeOnCompletion

isCloseOnCompletion

closeOldResultSet

isClosed

unwrap

isWrapperFor

isPoolable

setPoolable

enquoteIdentifier

isSimpleIdentifier

toString