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Classic mysql limit usage and optimization of bitsCN.com Classic mysql limit usage and optimization Usage 1 SELECT 'keyword _ rank '. * FROM 'keyword _ rank' WHERE (advertiserid = '59') LIMIT 2 OFFSET 1; For example, in this

confuse the two. Usage 3 Select * from tablename Limit 100,-1 Starting from 100th-the last record Usage 4 Select * from tablename Limit 15 Equivalent to limit. Use 5 to retrieve the first 15 pieces of data from the query result Mysql earlier versions do not su

Usage 1Copy codeThe Code is as follows:SELECT 'keyword _ rank '. * FROM 'keyword _ rank' WHERE (advertiserid = '59') LIMIT 2 OFFSET 1;For example, in this SQL statement, two pieces of data are followed by the limit statement, and the offset statement is followed by 1st pieces of data.Usage 2Copy codeThe Code is as follows:SELECT 'keyword _ rank '. * FROM 'keyword

In MySQL's limit usage, there is a discussion on the Internet:"//In order to retrieve all record rows from one offset to the end of the recordset, you can specify a second parameter of-1:Mysql> SELECT * from table LIMIT 95,-1;Retrieves the record line 96-last. "The person who wrote this sentence certainly did not actua

Usage of Mysql injection points after the limit keyword There are countless articles describing SQL injection methods. This article describes a special scenario. Details In a test, I encountered an SQL injection problem. I did not find a solution on the Internet. At that time, the injection point was after the limit ke