ISSUES-4006 rename sign and version column

src/Databases/MySQL/queryConvert.cpp

@@ -142,8 +142,8 @@ String toCreateQuery(const MySQLTableStruct & table_struct, const Context & cont
             + " cannot be materialized, because there is no primary keys.", ErrorCodes::NOT_IMPLEMENTED);
 
     WriteBufferFromOwnString out;
-    String sign = getUniqueColumnName(table_struct.columns_name_and_type, "__sign");
-    String version = getUniqueColumnName(table_struct.columns_name_and_type, "__version");
+    String sign = getUniqueColumnName(table_struct.columns_name_and_type, "_sign");
+    String version = getUniqueColumnName(table_struct.columns_name_and_type, "_version");
     out << "CREATE TABLE " << (table_struct.if_not_exists ? "IF NOT EXISTS" : "")
         << backQuoteIfNeed(table_struct.database_name) + "." << backQuoteIfNeed(table_struct.table_name)
         << "(" << queryToString(InterpreterCreateQuery::formatColumns(table_struct.columns_name_and_type))

src/Parsers/MySQL/tryParseMySQLQuery.cpp

@@ -0,0 +1,37 @@
+#include <Parsers/MySQL/tryParseMySQLQuery.h>
+
+#include <Parsers/ParserDropQuery.h>
+#include <Parsers/ParserRenameQuery.h>
+#include <Parsers/MySQL/ASTCreateQuery.h>
+
+#include <Parsers/parseQuery.h>
+
+namespace DB
+{
+
+namespace MySQLParser
+{
+
+bool ParserQuery::parseImpl(IParser::Pos & pos, ASTPtr & node, Expected & expected)
+{
+    ParserDropQuery p_drop_query;
+    ParserRenameQuery p_rename_query;
+    ParserCreateQuery p_create_query;
+    /// TODO: alter table
+
+    return p_create_query.parse(pos, node, expected) || p_drop_query.parse(pos, node, expected)
+        || p_rename_query.parse(pos, node, expected);
+}
+
+}
+
+ASTPtr tryParseMySQLQuery(const std::string & query, size_t max_query_size, size_t max_parser_depth)
+{
+    std::string error_message;
+    const char * pos = query.data();
+    MySQLParser::ParserQuery p_query;
+    return tryParseQuery(p_query, pos, query.data() + query.size(), error_message, false, "", false, max_query_size, max_parser_depth);
+}
+
+}
+

src/Parsers/MySQL/tryParseMySQLQuery.h

@@ -0,0 +1,24 @@
+#pragma once
+
+#include <Parsers/IAST.h>
+#include <Parsers/IParserBase.h>
+
+namespace DB
+{
+
+namespace MySQLParser
+{
+
+class ParserQuery : public IParserBase
+{
+protected:
+    const char * getName() const override { return "MySQL Query"; }
+
+    bool parseImpl(Pos & pos, ASTPtr & node, Expected & expected) override;
+};
+
+}
+
+ASTPtr tryParseMySQLQuery(const std::string & query, size_t max_query_size, size_t max_parser_depth);
+
+}