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83 lines
2.6 KiB
C++
83 lines
2.6 KiB
C++
#include "config_core.h"
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#include <Parsers/ASTExternalDDLQuery.h>
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#include <Parsers/ASTSelectWithUnionQuery.h>
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#include <Parsers/CommonParsers.h>
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#include <Parsers/ExpressionElementParsers.h>
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#include <Parsers/ParserDropQuery.h>
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#include <Parsers/ParserExternalDDLQuery.h>
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#include <Parsers/ParserRenameQuery.h>
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#if USE_MYSQL
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# include <Parsers/MySQL/ASTAlterQuery.h>
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# include <Parsers/MySQL/ASTCreateQuery.h>
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#endif
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namespace DB
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{
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#if USE_MYSQL
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namespace ErrorCodes
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{
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extern const int MYSQL_SYNTAX_ERROR;
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}
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#endif
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bool ParserExternalDDLQuery::parseImpl(IParser::Pos & pos, ASTPtr & node, Expected & expected)
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{
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ParserFunction p_function;
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ParserKeyword s_external("EXTERNAL DDL FROM");
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ASTPtr from;
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auto external_ddl_query = std::make_shared<ASTExternalDDLQuery>();
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if (!s_external.ignore(pos, expected))
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return false;
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if (!p_function.parse(pos, from, expected))
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return false;
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external_ddl_query->set(external_ddl_query->from, from);
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bool res = false;
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if (external_ddl_query->from->name == "MySQL")
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{
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#if USE_MYSQL
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ParserDropQuery p_drop_query;
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ParserRenameQuery p_rename_query;
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MySQLParser::ParserAlterQuery p_alter_query;
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MySQLParser::ParserCreateQuery p_create_query;
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res = p_create_query.parse(pos, external_ddl_query->external_ddl, expected)
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|| p_drop_query.parse(pos, external_ddl_query->external_ddl, expected)
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|| p_alter_query.parse(pos, external_ddl_query->external_ddl, expected)
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|| p_rename_query.parse(pos, external_ddl_query->external_ddl, expected);
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if (external_ddl_query->external_ddl)
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external_ddl_query->children.push_back(external_ddl_query->external_ddl);
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if (!res)
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{
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/// Syntax error is ignored, so we need to convert the error code for parsing failure
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if (ParserKeyword("ALTER TABLE").ignore(pos))
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throw Exception("Cannot parse MySQL alter query.", ErrorCodes::MYSQL_SYNTAX_ERROR);
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if (ParserKeyword("RENAME TABLE").ignore(pos))
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throw Exception("Cannot parse MySQL rename query.", ErrorCodes::MYSQL_SYNTAX_ERROR);
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if (ParserKeyword("DROP TABLE").ignore(pos) || ParserKeyword("TRUNCATE").ignore(pos))
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throw Exception("Cannot parse MySQL drop query.", ErrorCodes::MYSQL_SYNTAX_ERROR);
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if (ParserKeyword("CREATE TABLE").ignore(pos) || ParserKeyword("CREATE TEMPORARY TABLE").ignore(pos))
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throw Exception("Cannot parse MySQL create query.", ErrorCodes::MYSQL_SYNTAX_ERROR);
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}
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#endif
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}
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node = external_ddl_query;
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return res;
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}
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}
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