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/* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
#ifndef SQL_ALTER_TABLE_H
#define SQL_ALTER_TABLE_H
/**
Alter_table_common represents the common properties of the ALTER TABLE
statements.
@todo move Alter_info and other ALTER generic structures from Lex here.
*/
class Alter_table_common : public Sql_statement
{
protected:
/**
Constructor.
@param lex the LEX structure for this statement.
*/
Alter_table_common(LEX *lex)
: Sql_statement(lex)
{}
virtual ~Alter_table_common()
{}
};
/**
Alter_table_statement represents the generic ALTER TABLE statement.
@todo move Alter_info and other ALTER specific structures from Lex here.
*/
class Alter_table_statement : public Alter_table_common
{
public:
/**
Constructor, used to represent a ALTER TABLE statement.
@param lex the LEX structure for this statement.
*/
Alter_table_statement(LEX *lex)
: Alter_table_common(lex)
{}
~Alter_table_statement()
{}
/**
Execute a ALTER TABLE statement at runtime.
@param thd the current thread.
@return false on success.
*/
bool execute(THD *thd);
};
#endif
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