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LowCardinality data type is production ready

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This commit is contained in:
Alexey Milovidov 2019-02-10 00:55:51 +03:00
parent 9650c4a0da
commit 0eee4d42cb
3 changed files with 0 additions and 34 deletions
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31
dbms/src/Interpreters/InterpreterCreateQuery.cpp
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@ -429,33 +429,6 @@ ColumnsDescription InterpreterCreateQuery::getColumnsDescription(const ASTExpres
}
void InterpreterCreateQuery::checkSupportedTypes(const ColumnsDescription & columns, const Context & context)
{
const auto & settings = context.getSettingsRef();
bool allow_low_cardinality = settings.allow_experimental_low_cardinality_type != 0;
if (allow_low_cardinality)
return;
auto check_types = [&](const NamesAndTypesList & list)
{
for (const auto & column : list)
{
if (!allow_low_cardinality && column.type && column.type->lowCardinality())
{
String message = "Cannot create table with column '" + column.name + "' which type is '"
+ column.type->getName() + "' because LowCardinality type is not allowed. "
+ "Set setting allow_experimental_low_cardinality_type = 1 in order to allow it.";
throw Exception(message, ErrorCodes::ILLEGAL_COLUMN);
}
}
};
check_types(columns.ordinary);
check_types(columns.materialized);
}
ColumnsDescription InterpreterCreateQuery::setColumns(
ASTCreateQuery & create, const Block & as_select_sample, const StoragePtr & as_storage) const
{
@ -618,10 +591,6 @@ BlockIO InterpreterCreateQuery::createTable(ASTCreateQuery & create)
/// Set and retrieve list of columns.
ColumnsDescription columns = setColumns(create, as_select_sample, as_storage);
/// Some column types may be not allowed according to settings.
if (!create.attach)
checkSupportedTypes(columns, context);
/// Set the table engine if it was not specified explicitly.
setEngine(create);

2
dbms/src/Interpreters/InterpreterCreateQuery.h
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@ -49,8 +49,6 @@ public:
/// Obtain information about columns, their types, default values and column comments, for case when columns in CREATE query is specified explicitly.
static ColumnsDescription getColumnsDescription(const ASTExpressionList & columns, const Context & context);
/// Check that column types are allowed for usage in table according to settings.
static void checkSupportedTypes(const ColumnsDescription & columns, const Context & context);
private:
BlockIO createDatabase(ASTCreateQuery & create);

1
dbms/src/Interpreters/Settings.h
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@ -284,7 +284,6 @@ struct Settings
\
M(SettingUInt64, low_cardinality_max_dictionary_size, 8192, "Maximum size (in rows) of shared global dictionary for LowCardinality type.") \
M(SettingBool, low_cardinality_use_single_dictionary_for_part, false, "LowCardinality type serialization setting. If is true, than will use additional keys when global dictionary overflows. Otherwise, will create several shared dictionaries.") \
M(SettingBool, allow_experimental_low_cardinality_type, false, "Allows to create table with LowCardinality types.") \
M(SettingBool, decimal_check_overflow, true, "Check overflow of decimal arithmetic/comparison operations") \
\
M(SettingBool, prefer_localhost_replica, 1, "1 - always send query to local replica, if it exists. 0 - choose replica to send query between local and remote ones according to load_balancing") \