How to would you find out whether a substring occurs in a given string?

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Skywalker. · Accepted Answer

If the query string isn't going to change that often, then it might be a hint to use KMP. Since it creates a "matching-table" for all the characters in the query string - so irrespective of the text we are going to be searching in and given that the query string doesn't search that often KMP can provide an O(n) solution.

Sigiloso · Answer

Complexity? What is best way to deal with it if the query string change not often?

how to swap coloumn data in same table ? · Answer

this query is follows............

UPDATE tablename SET colm1=(@temp:=colm1), colm1=colm2,colm2 = @temp;

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