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#include <Parsers/ASTColumnDeclaration.h>
#include <Common/quoteString.h>
#include <IO/Operators.h>
#include <Parsers/ASTLiteral.h>
#include <DataTypes/DataTypeFactory.h>
namespace DB
{
ASTPtr ASTColumnDeclaration::clone() const
{
const auto res = std::make_shared<ASTColumnDeclaration>(*this);
res->children.clear();
if (type)
{
// Type may be an ASTFunction (e.g. `create table t (a Decimal(9,0))`),
// so we have to clone it properly as well.
res->type = type->clone();
res->children.push_back(res->type);
}
if (default_expression)
{
res->default_expression = default_expression->clone();
res->children.push_back(res->default_expression);
}
if (comment)
{
res->comment = comment->clone();
res->children.push_back(res->comment);
}
if (codec)
{
res->codec = codec->clone();
res->children.push_back(res->codec);
}
if (ttl)
{
res->ttl = ttl->clone();
res->children.push_back(res->ttl);
}
if (collation)
{
res->collation = collation->clone();
res->children.push_back(res->collation);
}
return res;
}
void ASTColumnDeclaration::formatImpl(const FormatSettings & settings, FormatState & state, FormatStateStacked frame) const
{
frame.need_parens = false;
/// We have to always backquote column names to avoid ambiguouty with INDEX and other declarations in CREATE query.
settings.ostr << backQuote(name);
if (type)
{
settings.ostr << ' ';
FormatStateStacked type_frame = frame;
type_frame.indent = 0;
type->formatImpl(settings, state, type_frame);
}
if (null_modifier)
{
settings.ostr << ' ' << (settings.hilite ? hilite_keyword : "")
<< (*null_modifier ? "" : "NOT ") << "NULL" << (settings.hilite ? hilite_none : "");
}
if (primary_key_specifier)
settings.ostr << ' ' << (settings.hilite ? hilite_keyword : "")
<< "PRIMARY KEY" << (settings.hilite ? hilite_none : "");
if (default_expression)
{
settings.ostr << ' ' << (settings.hilite ? hilite_keyword : "") << default_specifier << (settings.hilite ? hilite_none : "");
if (!ephemeral_default)
{
settings.ostr << ' ';
default_expression->formatImpl(settings, state, frame);
}
}
if (comment)
{
settings.ostr << ' ' << (settings.hilite ? hilite_keyword : "") << "COMMENT" << (settings.hilite ? hilite_none : "") << ' ';
comment->formatImpl(settings, state, frame);
}
if (codec)
{
settings.ostr << ' ';
codec->formatImpl(settings, state, frame);
}
if (ttl)
{
settings.ostr << ' ' << (settings.hilite ? hilite_keyword : "") << "TTL" << (settings.hilite ? hilite_none : "") << ' ';
ttl->formatImpl(settings, state, frame);
}
if (collation)
{
settings.ostr << ' ' << (settings.hilite ? hilite_keyword : "") << "COLLATE" << (settings.hilite ? hilite_none : "") << ' ';
collation->formatImpl(settings, state, frame);
}
}
}
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