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Simplification

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This commit is contained in:
Alexey Milovidov 2024-08-08 04:52:18 +02:00
parent 4fac40a3cb
commit ca9bd647fb
1 changed files with 7 additions and 36 deletions
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43
src/Client/ClientBase.cpp
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@ -1877,48 +1877,19 @@ void ClientBase::processParsedSingleQuery(const String & full_query, const Strin
profile_events.watch.restart();
{
/// Temporarily apply query settings to context.
std::optional<Settings> old_settings;
SCOPE_EXIT_SAFE({
if (old_settings)
client_context->setSettings(*old_settings);
/// Temporarily apply query settings to the context.
Settings old_settings = client_context->getSettingsCopy();
SCOPE_EXIT_SAFE(
{
client_context->setSettings(old_settings);
});
auto apply_query_settings = [&](const IAST & settings_ast)
{
if (!old_settings)
old_settings.emplace(client_context->getSettingsRef());
client_context->applySettingsChanges(settings_ast.as<ASTSetQuery>()->changes);
client_context->resetSettingsToDefaultValue(settings_ast.as<ASTSetQuery>()->default_settings);
};
const auto * insert = parsed_query->as<ASTInsertQuery>();
if (const auto * select = parsed_query->as<ASTSelectQuery>(); select && select->settings())
apply_query_settings(*select->settings());
else if (const auto * select_with_union = parsed_query->as<ASTSelectWithUnionQuery>())
{
const ASTs & children = select_with_union->list_of_selects->children;
if (!children.empty())
{
// On the client it is enough to apply settings only for the
// last SELECT, since the only thing that is important to apply
// on the client is format settings.
const auto * last_select = children.back()->as<ASTSelectQuery>();
if (last_select && last_select->settings())
{
apply_query_settings(*last_select->settings());
}
}
}
else if (const auto * query_with_output = parsed_query->as<ASTQueryWithOutput>(); query_with_output && query_with_output->settings_ast)
apply_query_settings(*query_with_output->settings_ast);
else if (insert && insert->settings_ast)
apply_query_settings(*insert->settings_ast);
InterpreterSetQuery::applySettingsFromQuery(parsed_query, client_context);
if (!connection->checkConnected(connection_parameters.timeouts))
connect();
ASTPtr input_function;
const auto * insert = parsed_query->as<ASTInsertQuery>();
if (insert && insert->select)
insert->tryFindInputFunction(input_function);