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Merge pull request #11916 from ClickHouse/query-parameters-keep-alias

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Keep aliases for substitutions in query.
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alexey-milovidov 2020-06-24 20:27:15 +03:00 committed by GitHub
commit 2ce2588770
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3 changed files with 11 additions and 0 deletions
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2
src/Interpreters/ReplaceQueryParameterVisitor.cpp
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@ -49,6 +49,7 @@ void ReplaceQueryParameterVisitor::visitQueryParameter(ASTPtr & ast)
const auto & ast_param = ast->as<ASTQueryParameter &>();
const String & value = getParamValue(ast_param.name);
const String & type_name = ast_param.type;
String alias = ast_param.alias;
const auto data_type = DataTypeFactory::instance().get(type_name);
auto temp_column_ptr = data_type->createColumn();
@ -63,6 +64,7 @@ void ReplaceQueryParameterVisitor::visitQueryParameter(ASTPtr & ast)
+ value.substr(0, read_buffer.count()), ErrorCodes::BAD_QUERY_PARAMETER);
ast = addTypeConversionToAST(std::make_shared<ASTLiteral>(temp_column[0]), type_name);
ast->setAlias(alias);
}
}

3
tests/queries/0_stateless/01342_query_parameters_alias.reference Normal file
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@ -0,0 +1,3 @@
a
Nullable(Nothing)
\N

6
tests/queries/0_stateless/01342_query_parameters_alias.sh Executable file
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@ -0,0 +1,6 @@
#!/usr/bin/env bash
CURDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
. $CURDIR/../shell_config.sh
$CLICKHOUSE_CLIENT --param_x '\N' --query 'SELECT {x:Nullable(Nothing)} as a' --format TSVWithNamesAndTypes