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68 lines
1.6 KiB
C++
68 lines
1.6 KiB
C++
#include <Parsers/ASTDropIndexQuery.h>
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#include <Parsers/ASTIdentifier.h>
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#include <Parsers/CommonParsers.h>
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#include <Parsers/ExpressionElementParsers.h>
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#include <Parsers/ParserDropIndexQuery.h>
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#include <Parsers/parseDatabaseAndTableName.h>
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namespace DB
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{
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bool ParserDropIndexQuery::parseImpl(IParser::Pos & pos, ASTPtr & node, Expected & expected)
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{
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auto query = std::make_shared<ASTDropIndexQuery>();
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node = query;
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ParserKeyword s_drop("DROP");
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ParserKeyword s_index("INDEX");
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ParserKeyword s_on("ON");
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ParserKeyword s_if_exists("IF EXISTS");
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ParserIdentifier index_name_p;
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String cluster_str;
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bool if_exists = false;
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if (!s_drop.ignore(pos, expected))
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return false;
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if (!s_index.ignore(pos, expected))
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return false;
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if (s_if_exists.ignore(pos, expected))
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if_exists = true;
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if (!index_name_p.parse(pos, query->index_name, expected))
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return false;
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/// ON [db.] table_name
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if (!s_on.ignore(pos, expected))
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return false;
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if (!parseDatabaseAndTableAsAST(pos, expected, query->database, query->table))
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return false;
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/// [ON cluster_name]
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if (s_on.ignore(pos, expected))
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{
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if (!ASTQueryWithOnCluster::parse(pos, cluster_str, expected))
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return false;
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query->cluster = std::move(cluster_str);
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}
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if (query->index_name)
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query->children.push_back(query->index_name);
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query->if_exists = if_exists;
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if (query->database)
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query->children.push_back(query->database);
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if (query->table)
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query->children.push_back(query->table);
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return true;
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}
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}
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