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#pragma once
#include <Parsers/ASTExpressionList.h>
#include <Parsers/IAST.h>
#include <Parsers/MySQL/ASTDeclareColumn.h>
#include <Parsers/MySQL/ASTDeclareIndex.h>
namespace DB
{
namespace ErrorCodes
{
extern const int NOT_IMPLEMENTED;
}
namespace MySQLParser
{
class ASTAlterCommand : public IAST
{
public:
enum Type
{
ADD_INDEX,
ADD_COLUMN,
DROP_INDEX,
DROP_CHECK,
DROP_COLUMN,
DROP_COLUMN_DEFAULT,
RENAME_INDEX,
RENAME_COLUMN,
RENAME_TABLE,
MODIFY_CHECK,
MODIFY_COLUMN,
MODIFY_INDEX_VISIBLE,
MODIFY_COLUMN_DEFAULT,
MODIFY_PROPERTIES,
ORDER_BY,
NO_TYPE
};
Type type = NO_TYPE;
/// For ADD INDEX
ASTDeclareIndex * index_decl = nullptr;
/// For modify default expression
IAST * default_expression = nullptr;
/// For ADD COLUMN
ASTExpressionList * additional_columns = nullptr;
/// For ORDER BY
ASTExpressionList * order_by_columns = nullptr;
bool first = false;
bool index_visible = false;
bool not_check_enforced = false;
String old_name;
String index_type;
String index_name;
String column_name;
String constraint_name;
String new_database_name;
String new_table_name;
IAST * properties = nullptr;
ASTPtr clone() const override;
String getID(char delim) const override { return "AlterCommand" + (delim + std::to_string(static_cast<int>(type))); }
protected:
void formatImpl(const FormatSettings & /*settings*/, FormatState & /*state*/, FormatStateStacked /*frame*/) const override
{
throw Exception(ErrorCodes::NOT_IMPLEMENTED, "Method formatImpl is not supported by MySQLParser::ASTAlterCommand.");
}
void forEachPointerToChild(std::function<void(void**)> f) override
{
f(reinterpret_cast<void **>(&index_decl));
f(reinterpret_cast<void **>(&default_expression));
f(reinterpret_cast<void **>(&additional_columns));
f(reinterpret_cast<void **>(&order_by_columns));
f(reinterpret_cast<void **>(&properties));
}
};
class ParserAlterCommand : public IParserBase
{
protected:
const char * getName() const override { return "alter command"; }
bool parseImpl(Pos & pos, ASTPtr & node, Expected & expected) override;
};
}
}
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