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