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#include <Parsers/ASTSetQuery.h>
#include <Parsers/formatSettingName.h>
#include <Common/SipHash.h>
#include <Common/FieldVisitorHash.h>
#include <Common/FieldVisitorToString.h>
#include <IO/Operators.h>
namespace DB
{
void ASTSetQuery::updateTreeHashImpl(SipHash & hash_state) const
{
for (const auto & change : changes)
{
hash_state.update(change.name.size());
hash_state.update(change.name);
applyVisitor(FieldVisitorHash(hash_state), change.value);
}
}
void ASTSetQuery::formatImpl(const FormatSettings & format, FormatState &, FormatStateStacked) const
{
if (is_standalone)
format.ostr << (format.hilite ? hilite_keyword : "") << "SET " << (format.hilite ? hilite_none : "");
bool first = true;
for (const auto & change : changes)
{
if (!first)
format.ostr << ", ";
else
first = false;
formatSettingName(change.name, format.ostr);
CustomType custom;
if (!format.show_secrets && change.value.tryGet<CustomType>(custom) && custom.isSecret())
format.ostr << " = " << custom.toString(false);
else
format.ostr << " = " << applyVisitor(FieldVisitorToString(), change.value);
}
for (const auto & setting_name : default_settings)
{
if (!first)
format.ostr << ", ";
else
first = false;
formatSettingName(setting_name, format.ostr);
format.ostr << " = DEFAULT";
}
for (const auto & [name, value] : query_parameters)
{
if (!first)
format.ostr << ", ";
else
first = false;
formatSettingName(QUERY_PARAMETER_NAME_PREFIX + name, format.ostr);
format.ostr << " = " << value;
}
}
void ASTSetQuery::appendColumnName(WriteBuffer & ostr) const
{
Hash hash = getTreeHash();
writeCString("__settings_", ostr);
writeText(hash.low64, ostr);
ostr.write('_');
writeText(hash.high64, ostr);
}
}
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