org.h2.command.dml

类 Update

java.lang.Object

org.h2.command.Prepared

org.h2.command.dml.Update

public class Update
extends Prepared

This class represents the statement UPDATE

字段概要

从类继承的字段 org.h2.command.Prepared

create, parameters, prepareAlways, session, sqlStatement

构造器概要

构造器

构造器和说明
Update(Session session)

方法概要

限定符和类型	方法和说明
String	getPlanSQL() Get the SQL statement with the execution plan.
int	getType() Get the command type as defined in CommandInterface
boolean	isCacheable()
boolean	isTransactional() Check if this command is transactional.
void	prepare() Prepare this statement.
ResultInterface	queryMeta() Get an empty result set containing the meta data.
void	setAssignment(Column column, Expression expression) Add an assignment of the form column = expression.
void	setCondition(Expression condition)
void	setLimit(Expression limit)
void	setTableFilter(TableFilter tableFilter)
int	update() Execute the statement.

从类继承的方法 org.h2.command.Prepared

checkCanceled, checkParameters, getCurrentObjectId, getCurrentRowNumber, getObjectId, getParameters, getSQL, getSQL, getSQL, isQuery, isReadOnly, needRecompile, query, setCommand, setCurrentRowNumber, setObjectId, setParameterList, setPrepareAlways, setRow, setSession, setSQL, toString

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

构造器详细资料

Update

public Update(Session session)

方法详细资料

setTableFilter

public void setTableFilter(TableFilter tableFilter)

setCondition

public void setCondition(Expression condition)

setAssignment

public void setAssignment(Column column,
                          Expression expression)

Add an assignment of the form column = expression.

参数:

column - the column

expression - the expression

update

public int update()

从类复制的说明: Prepared

Execute the statement.

覆盖:

update 在类中 Prepared

返回:

the update count

getPlanSQL

public String getPlanSQL()

从类复制的说明: Prepared

Get the SQL statement with the execution plan.

覆盖:

getPlanSQL 在类中 Prepared

返回:

the execution plan

prepare

public void prepare()

从类复制的说明: Prepared

Prepare this statement.

覆盖:

prepare 在类中 Prepared

isTransactional

public boolean isTransactional()

从类复制的说明: Prepared

Check if this command is transactional. If it is not, then it forces the current transaction to commit.

指定者:

isTransactional 在类中 Prepared

返回:

true if it is

queryMeta

public ResultInterface queryMeta()

从类复制的说明: Prepared

Get an empty result set containing the meta data.

指定者:

queryMeta 在类中 Prepared

返回:

the result set

getType

public int getType()

从类复制的说明: Prepared

Get the command type as defined in CommandInterface

指定者:

getType 在类中 Prepared

返回:

the statement type

setLimit

public void setLimit(Expression limit)

isCacheable

public boolean isCacheable()

覆盖:

isCacheable 在类中 Prepared