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alter cmds parse

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This commit is contained in:
Nikita Vasilev 2019-01-13 20:23:08 +03:00
parent 4f48ebd971
commit d0db87b412
2 changed files with 40 additions and 0 deletions
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31
dbms/src/Storages/AlterCommands.cpp
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@ -8,6 +8,7 @@
#include <Interpreters/ExpressionAnalyzer.h>
#include <Interpreters/ExpressionActions.h>
#include <Parsers/ASTIdentifier.h>
#include <Parsers/ASTIndexDeclaration.h>
#include <Parsers/ASTExpressionList.h>
#include <Parsers/ASTLiteral.h>
#include <Parsers/ASTFunction.h>
@ -113,6 +114,36 @@ std::optional<AlterCommand> AlterCommand::parse(const ASTAlterCommand * command_
command.order_by = command_ast->order_by;
return command;
}
else if (command_ast->type == ASTAlterCommand::ADD_INDEX)
{
AlterCommand command;
command.type = AlterCommand::ADD_INDEX;
const auto & ast_index_decl = typeid_cast<const ASTIndexDeclaration &>(*command_ast->index_decl);
command.index_name = ast_index_decl.name;
if (command_ast->index)
command.after_index_name = typeid_cast<const ASTIdentifier &>(*command_ast->index).name;
command.if_not_exists = command_ast->if_not_exists;
throw Exception("\"ALTER TABLE table ADD/DROP INDEX ...\" queries are not supported yet.", ErrorCodes::NOT_IMPLEMENTED);
return command;
}
else if (command_ast->type == ASTAlterCommand::DROP_INDEX)
{
if (command_ast->clear_column)
throw Exception("\"ALTER TABLE table CLEAR COLUMN column\" queries are not supported yet. Use \"CLEAR COLUMN column IN PARTITION\".", ErrorCodes::NOT_IMPLEMENTED);
AlterCommand command;
command.type = AlterCommand::DROP_INDEX;
command.index_name = typeid_cast<const ASTIdentifier &>(*(command_ast->index)).name;
command.if_exists = command_ast->if_exists;
throw Exception("\"ALTER TABLE table ADD/DROP INDEX ...\" queries are not supported yet.", ErrorCodes::NOT_IMPLEMENTED);
return command;
}
else
return {};
}

9
dbms/src/Storages/AlterCommands.h
View File

@ -23,6 +23,8 @@ struct AlterCommand
MODIFY_COLUMN,
COMMENT_COLUMN,
MODIFY_ORDER_BY,
ADD_INDEX,
DROP_INDEX,
UKNOWN_TYPE,
};
@ -52,6 +54,13 @@ struct AlterCommand
/// For MODIFY_ORDER_BY
ASTPtr order_by;
/// For ADD INDEX
ASTPtr index_decl;
String after_index_name;
/// For ADD/DROP INDEX
String index_name;
/// indicates that this command should not be applied, for example in case of if_exists=true and column doesn't exist.
bool ignore = false;