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Fixed error [#METR-2944].

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This commit is contained in:
Alexey Milovidov 2016-11-21 03:56:59 +03:00
parent ef3fb70123
commit b0fa239612
1 changed files with 1 additions and 1 deletions
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2
dbms/src/Interpreters/ExpressionAnalyzer.cpp
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@ -2237,7 +2237,7 @@ bool ExpressionAnalyzer::appendOrderBy(ExpressionActionsChain & chain, bool only
for (size_t i = 0; i < asts.size(); ++i)
{
ASTOrderByElement * ast = typeid_cast<ASTOrderByElement *>(asts[i].get());
if (!ast || ast->children.size() != 1)
if (!ast || ast->children.size() < 1)
throw Exception("Bad order expression AST", ErrorCodes::UNKNOWN_TYPE_OF_AST_NODE);
ASTPtr order_expression = ast->children.at(0);
step.required_output.push_back(order_expression->getColumnName());