ClickHouse/src/TableFunctions/parseColumnsListForTableFunction.cpp

32 lines
1005 B
C++

#include <Parsers/ASTExpressionList.h>
#include <Parsers/ParserCreateQuery.h>
#include <Parsers/parseQuery.h>
#include <Interpreters/InterpreterCreateQuery.h>
#include <Interpreters/Context.h>
#include <TableFunctions/parseColumnsListForTableFunction.h>
namespace DB
{
namespace ErrorCodes
{
extern const int LOGICAL_ERROR;
}
ColumnsDescription parseColumnsListFromString(const std::string & structure, const Context & context)
{
ParserColumnDeclarationList parser;
const Settings & settings = context.getSettingsRef();
ASTPtr columns_list_raw = parseQuery(parser, structure, "columns declaration list", settings.max_query_size, settings.max_parser_depth);
auto * columns_list = dynamic_cast<ASTExpressionList *>(columns_list_raw.get());
if (!columns_list)
throw Exception("Could not cast AST to ASTExpressionList", ErrorCodes::LOGICAL_ERROR);
return InterpreterCreateQuery::getColumnsDescription(*columns_list, context, !settings.allow_suspicious_codecs);
}
}