2017-04-01 09:19:00 +00:00
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#include <Parsers/ParserUseQuery.h>
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2017-03-11 00:27:59 +00:00
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2017-04-01 09:19:00 +00:00
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#include <Common/typeid_cast.h>
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#include <Parsers/ASTIdentifier.h>
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#include <Parsers/ExpressionElementParsers.h>
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#include <Parsers/CommonParsers.h>
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#include <Parsers/ASTUseQuery.h>
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2017-03-11 00:27:59 +00:00
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namespace DB
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{
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bool ParserUseQuery::parseImpl(Pos & pos, Pos end, ASTPtr & node, Pos & max_parsed_pos, Expected & expected)
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{
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2017-04-01 07:20:54 +00:00
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Pos begin = pos;
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2017-03-11 00:27:59 +00:00
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2017-06-15 17:55:57 +00:00
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ParserWhitespaceOrComments ws;
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2017-04-01 07:20:54 +00:00
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ParserString s_use("USE", true, true);
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ParserIdentifier name_p;
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2017-03-11 00:27:59 +00:00
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2017-04-01 07:20:54 +00:00
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ASTPtr database;
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2017-03-11 00:27:59 +00:00
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2017-04-01 07:20:54 +00:00
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ws.ignore(pos, end);
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2017-03-11 00:27:59 +00:00
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2017-04-01 07:20:54 +00:00
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if (!s_use.ignore(pos, end, max_parsed_pos, expected))
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return false;
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2017-03-11 00:27:59 +00:00
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2017-04-01 07:20:54 +00:00
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ws.ignore(pos, end);
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2017-03-11 00:27:59 +00:00
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2017-04-01 07:20:54 +00:00
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if (!name_p.parse(pos, end, database, max_parsed_pos, expected))
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return false;
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2017-03-11 00:27:59 +00:00
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2017-04-01 07:20:54 +00:00
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ws.ignore(pos, end);
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2017-03-11 00:27:59 +00:00
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2017-04-01 07:20:54 +00:00
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auto query = std::make_shared<ASTUseQuery>(StringRange(begin, pos));
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query->database = typeid_cast<ASTIdentifier &>(*database).name;
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node = query;
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2017-03-11 00:27:59 +00:00
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2017-04-01 07:20:54 +00:00
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return true;
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2017-03-11 00:27:59 +00:00
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}
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}
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