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#pragma once
#include <Parsers/ASTQueryWithTableAndOutput.h>
#include <Common/quoteString.h>
namespace DB
{
struct ASTExistsDatabaseQueryIDAndQueryNames
{
static constexpr auto ID = "ExistsDatabaseQuery";
static constexpr auto Query = "EXISTS DATABASE";
/// No temporary databases are supported, just for parsing
static constexpr auto QueryTemporary = "";
};
struct ASTExistsTableQueryIDAndQueryNames
{
static constexpr auto ID = "ExistsTableQuery";
static constexpr auto Query = "EXISTS TABLE";
static constexpr auto QueryTemporary = "EXISTS TEMPORARY TABLE";
};
struct ASTExistsViewQueryIDAndQueryNames
{
static constexpr auto ID = "ExistsViewQuery";
static constexpr auto Query = "EXISTS VIEW";
/// No temporary view are supported, just for parsing
static constexpr auto QueryTemporary = "";
};
struct ASTExistsDictionaryQueryIDAndQueryNames
{
static constexpr auto ID = "ExistsDictionaryQuery";
static constexpr auto Query = "EXISTS DICTIONARY";
/// No temporary dictionaries are supported, just for parsing
static constexpr auto QueryTemporary = "EXISTS TEMPORARY DICTIONARY";
};
struct ASTShowCreateTableQueryIDAndQueryNames
{
static constexpr auto ID = "ShowCreateTableQuery";
static constexpr auto Query = "SHOW CREATE TABLE";
static constexpr auto QueryTemporary = "SHOW CREATE TEMPORARY TABLE";
};
struct ASTShowCreateViewQueryIDAndQueryNames
{
static constexpr auto ID = "ShowCreateViewQuery";
static constexpr auto Query = "SHOW CREATE VIEW";
/// No temporary view are supported, just for parsing
static constexpr auto QueryTemporary = "";
};
struct ASTShowCreateDatabaseQueryIDAndQueryNames
{
static constexpr auto ID = "ShowCreateDatabaseQuery";
static constexpr auto Query = "SHOW CREATE DATABASE";
static constexpr auto QueryTemporary = "SHOW CREATE TEMPORARY DATABASE";
};
struct ASTShowCreateDictionaryQueryIDAndQueryNames
{
static constexpr auto ID = "ShowCreateDictionaryQuery";
static constexpr auto Query = "SHOW CREATE DICTIONARY";
/// No temporary dictionaries are supported, just for parsing
static constexpr auto QueryTemporary = "SHOW CREATE TEMPORARY DICTIONARY";
};
struct ASTDescribeQueryExistsQueryIDAndQueryNames
{
static constexpr auto ID = "DescribeQuery";
static constexpr auto Query = "DESCRIBE TABLE";
static constexpr auto QueryTemporary = "DESCRIBE TEMPORARY TABLE";
};
using ASTExistsTableQuery = ASTQueryWithTableAndOutputImpl<ASTExistsTableQueryIDAndQueryNames>;
using ASTExistsViewQuery = ASTQueryWithTableAndOutputImpl<ASTExistsViewQueryIDAndQueryNames>;
using ASTExistsDictionaryQuery = ASTQueryWithTableAndOutputImpl<ASTExistsDictionaryQueryIDAndQueryNames>;
using ASTShowCreateTableQuery = ASTQueryWithTableAndOutputImpl<ASTShowCreateTableQueryIDAndQueryNames>;
using ASTShowCreateViewQuery = ASTQueryWithTableAndOutputImpl<ASTShowCreateViewQueryIDAndQueryNames>;
using ASTShowCreateDictionaryQuery = ASTQueryWithTableAndOutputImpl<ASTShowCreateDictionaryQueryIDAndQueryNames>;
class ASTExistsDatabaseQuery : public ASTQueryWithTableAndOutputImpl<ASTExistsDatabaseQueryIDAndQueryNames>
{
protected:
void formatQueryImpl(const FormatSettings & settings, FormatState &, FormatStateStacked) const override
{
settings.ostr << (settings.hilite ? hilite_keyword : "") << ASTExistsDatabaseQueryIDAndQueryNames::Query
<< " " << (settings.hilite ? hilite_none : "") << backQuoteIfNeed(getDatabase());
}
QueryKind getQueryKind() const override { return QueryKind::Exists; }
};
class ASTShowCreateDatabaseQuery : public ASTQueryWithTableAndOutputImpl<ASTShowCreateDatabaseQueryIDAndQueryNames>
{
protected:
void formatQueryImpl(const FormatSettings & settings, FormatState &, FormatStateStacked) const override
{
settings.ostr << (settings.hilite ? hilite_keyword : "") << ASTShowCreateDatabaseQueryIDAndQueryNames::Query
<< " " << (settings.hilite ? hilite_none : "") << backQuoteIfNeed(getDatabase());
}
};
class ASTDescribeQuery : public ASTQueryWithOutput
{
public:
ASTPtr table_expression;
String getID(char) const override { return "DescribeQuery"; }
ASTPtr clone() const override
{
auto res = std::make_shared<ASTDescribeQuery>(*this);
res->children.clear();
if (table_expression)
{
res->table_expression = table_expression->clone();
res->children.push_back(res->table_expression);
}
cloneOutputOptions(*res);
return res;
}
QueryKind getQueryKind() const override { return QueryKind::Describe; }
protected:
void formatQueryImpl(const FormatSettings & settings, FormatState & state, FormatStateStacked frame) const override
{
settings.ostr << (settings.hilite ? hilite_keyword : "")
<< "DESCRIBE TABLE" << (settings.hilite ? hilite_none : "");
table_expression->formatImpl(settings, state, frame);
}
};
}
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