mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-04 21:42:39 +00:00
72 lines
1.8 KiB
C++
72 lines
1.8 KiB
C++
#include <Parsers/ParserDeleteQuery.h>
|
|
#include <Parsers/ASTDeleteQuery.h>
|
|
#include <Parsers/parseDatabaseAndTableName.h>
|
|
#include <Parsers/ExpressionListParsers.h>
|
|
#include <Parsers/ParserSetQuery.h>
|
|
|
|
|
|
namespace DB
|
|
{
|
|
|
|
bool ParserDeleteQuery::parseImpl(Pos & pos, ASTPtr & node, Expected & expected)
|
|
{
|
|
auto query = std::make_shared<ASTDeleteQuery>();
|
|
node = query;
|
|
|
|
ParserKeyword s_delete("DELETE");
|
|
ParserKeyword s_from("FROM");
|
|
ParserKeyword s_where("WHERE");
|
|
ParserExpression parser_exp_elem;
|
|
ParserKeyword s_settings("SETTINGS");
|
|
ParserKeyword s_on{"ON"};
|
|
|
|
if (s_delete.ignore(pos, expected))
|
|
{
|
|
if (!s_from.ignore(pos, expected))
|
|
return false;
|
|
|
|
if (!parseDatabaseAndTableAsAST(pos, expected, query->database, query->table))
|
|
return false;
|
|
|
|
if (s_on.ignore(pos, expected))
|
|
{
|
|
String cluster_str;
|
|
if (!ASTQueryWithOnCluster::parse(pos, cluster_str, expected))
|
|
return false;
|
|
query->cluster = cluster_str;
|
|
}
|
|
|
|
if (!s_where.ignore(pos, expected))
|
|
return false;
|
|
|
|
if (!parser_exp_elem.parse(pos, query->predicate, expected))
|
|
return false;
|
|
|
|
if (s_settings.ignore(pos, expected))
|
|
{
|
|
ParserSetQuery parser_settings(true);
|
|
|
|
if (!parser_settings.parse(pos, query->settings_ast, expected))
|
|
return false;
|
|
}
|
|
}
|
|
else
|
|
return false;
|
|
|
|
if (query->predicate)
|
|
query->children.push_back(query->predicate);
|
|
|
|
if (query->database)
|
|
query->children.push_back(query->database);
|
|
|
|
if (query->table)
|
|
query->children.push_back(query->table);
|
|
|
|
if (query->settings_ast)
|
|
query->children.push_back(query->settings_ast);
|
|
|
|
return true;
|
|
}
|
|
|
|
}
|