org.h2.command.ddl

类 AlterTableAlterColumn

java.lang.Object

org.h2.command.Prepared

org.h2.command.ddl.DefineCommand

org.h2.command.ddl.SchemaCommand

org.h2.command.ddl.CommandWithColumns

org.h2.command.ddl.AlterTableAlterColumn

public class AlterTableAlterColumn
extends CommandWithColumns

This class represents the statements ALTER TABLE ADD, ALTER TABLE ADD IF NOT EXISTS, ALTER TABLE ALTER COLUMN, ALTER TABLE ALTER COLUMN SELECTIVITY, ALTER TABLE ALTER COLUMN SET DEFAULT, ALTER TABLE ALTER COLUMN DROP DEFAULT, ALTER TABLE ALTER COLUMN DROP EXPRESSION, ALTER TABLE ALTER COLUMN SET NULL, ALTER TABLE ALTER COLUMN DROP NULL, ALTER TABLE ALTER COLUMN SET VISIBLE, ALTER TABLE ALTER COLUMN SET INVISIBLE, ALTER TABLE DROP COLUMN

字段概要

从类继承的字段 org.h2.command.ddl.DefineCommand

transactional

从类继承的字段 org.h2.command.Prepared

create, parameters, prepareAlways, session, sqlStatement, sqlTokens

构造器概要

构造器

构造器和说明
AlterTableAlterColumn(SessionLocal session, Schema schema)

方法概要

限定符和类型	方法和说明
void	addColumn(Column column) Add a column to this table.
int	getType() Get the command type as defined in CommandInterface
void	setAddAfter(String after)
void	setAddBefore(String before)
void	setAddFirst() Add the column as the first column of the table.
void	setBooleanFlag(boolean booleanFlag)
void	setColumnsToRemove(ArrayList<Column> columnsToRemove)
void	setDefaultExpression(Expression defaultExpression) Set default or on update expression.
void	setIfNotExists(boolean ifNotExists)
void	setIfTableExists(boolean b)
void	setNewColumn(Column newColumn)
void	setOldColumn(Column oldColumn)
void	setSelectivity(Expression selectivity)
void	setTableName(String tableName)
void	setType(int type)
void	setUsingExpression(Expression usingExpression) Set using expression.
long	update() Execute the statement.

从类继承的方法 org.h2.command.ddl.CommandWithColumns

addConstraintCommand, changePrimaryKeysToNotNull, createConstraints, generateSequences, getPrimaryKey

从类继承的方法 org.h2.command.ddl.SchemaCommand

getSchema

从类继承的方法 org.h2.command.ddl.DefineCommand

isReadOnly, isTransactional, queryMeta, setTransactional

从类继承的方法 org.h2.command.Prepared

checkCanceled, checkParameters, collectDependencies, getCteCleanups, getCurrentRowNumber, getObjectId, getParameters, getPersistedObjectId, getPlanSQL, getSession, getSimpleSQL, getSQL, getSQLTokens, isCacheable, isQuery, isWithParamValues, needRecompile, prepare, query, setCommand, setCteCleanups, setCurrentRowNumber, setParameterList, setPersistedObjectId, setPrepareAlways, setRow, setSession, setSQL, setWithParamValues, 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

AlterTableAlterColumn

public AlterTableAlterColumn(SessionLocal session,
                             Schema schema)

方法详细资料

setIfTableExists

public void setIfTableExists(boolean b)

setTableName

public void setTableName(String tableName)

setOldColumn

public void setOldColumn(Column oldColumn)

setAddFirst

public void setAddFirst()

Add the column as the first column of the table.

setAddBefore

public void setAddBefore(String before)

setAddAfter

public void setAddAfter(String after)

update

public long update()

从类复制的说明: Prepared

Execute the statement.

覆盖:

update 在类中 Prepared

返回:

the update count

setType

public void setType(int type)

setSelectivity

public void setSelectivity(Expression selectivity)

setDefaultExpression

public void setDefaultExpression(Expression defaultExpression)

Set default or on update expression.

参数:

defaultExpression - default or on update expression

setUsingExpression

public void setUsingExpression(Expression usingExpression)

Set using expression.

参数:

usingExpression - using expression

setNewColumn

public void setNewColumn(Column newColumn)

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

setIfNotExists

public void setIfNotExists(boolean ifNotExists)

addColumn

public void addColumn(Column column)

从类复制的说明: CommandWithColumns

Add a column to this table.

指定者:

addColumn 在类中 CommandWithColumns

参数:

column - the column to add

setColumnsToRemove

public void setColumnsToRemove(ArrayList<Column> columnsToRemove)

setBooleanFlag

public void setBooleanFlag(boolean booleanFlag)