// Copyright © 2016 Abcum Ltd // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. package mysql const sqlClr = ` DELETE FROM kv WHERE k=? ` const sqlClrP = ` DELETE FROM kv WHERE k LIKE CONCAT(?, '%') LIMIT ? ` const sqlClrR = ` DELETE FROM kv WHERE k>=? AND k<? LIMIT ? ` const sqlGet = ` SELECT * FROM kv WHERE t<=? AND k=? ORDER BY t DESC LIMIT 1 ` const sqlGetP = ` SELECT q1.t, q1.k, v FROM kv q1 JOIN ( SELECT k, MAX(t) AS t FROM kv WHERE t<=? AND k LIKE CONCAT(?, '%') GROUP BY k ) AS q2 ON q1.t = q2.t AND q1.k = q2.k ORDER BY q1.k LIMIT ? ` const sqlGetR = ` SELECT q1.t, q1.k, v FROM kv q1 JOIN ( SELECT k, MAX(t) AS t FROM kv WHERE t<=? AND k>=? AND k<? GROUP BY k ) AS q2 ON q1.t = q2.t AND q1.k = q2.k ORDER BY q1.k LIMIT ? ` const sqlDel = ` DELETE FROM kv WHERE t<=? AND k=? ORDER BY t DESC LIMIT 1 ` const sqlDelP = ` DELETE q1 FROM kv JOIN ( SELECT k, MAX(t) AS t FROM kv WHERE t<=? AND k LIKE CONCAT(?, '%') GROUP BY k ) AS q2 ON q1.t = q2.t AND q1.k = q2.k ORDER BY q1.k LIMIT ? ` const sqlDelR = ` DELETE q1 FROM kv JOIN ( SELECT k, MAX(t) AS t FROM kv WHERE t<=? AND k>=? AND k<? GROUP BY k ) AS q2 ON q1.t = q2.t AND q1.k = q2.k ORDER BY q1.k LIMIT ? ` const sqlPut = ` INSERT INTO kv (t, k, v) VALUES (?, ?, ?) ON DUPLICATE KEY UPDATE v=? ` const sqlPutN = ` INSERT INTO kv (t, k, v) VALUES (?, ?, ?) `