mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-14 02:12:21 +00:00
35 lines
965 B
C++
35 lines
965 B
C++
#pragma once
|
|
|
|
#include <Interpreters/Context_fwd.h>
|
|
|
|
#include <memory>
|
|
#include <string>
|
|
#include <unordered_map>
|
|
|
|
|
|
namespace DB
|
|
{
|
|
|
|
class Block;
|
|
class NamesAndTypesList;
|
|
class ColumnsDescription;
|
|
|
|
class ActionsDAG;
|
|
using ActionsDAGPtr = std::shared_ptr<ActionsDAG>;
|
|
|
|
/// Create actions which adds missing defaults to block according to required_columns using columns description
|
|
/// or substitute NULL into DEFAULT value in case of INSERT SELECT query (null_as_default) if according setting is 1.
|
|
/// Return nullptr if no actions required.
|
|
ActionsDAGPtr evaluateMissingDefaults(
|
|
const Block & header,
|
|
const NamesAndTypesList & required_columns,
|
|
const ColumnsDescription & columns,
|
|
ContextPtr context,
|
|
bool save_unneeded_columns = true,
|
|
bool null_as_default = false);
|
|
|
|
/// Tries to convert columns in block to required_columns
|
|
void performRequiredConversions(Block & block, const NamesAndTypesList & required_columns, ContextPtr context);
|
|
|
|
}
|