suprsnipes Posted May 29, 2009 Share Posted May 29, 2009 This is the SQL query. I'm not having a problem with this, but it's the steps afterwards, firstly let me explain what I am trying to do. CREATE TABLE t3 AS (SELECT * FROM t1 INNER JOIN t2 on t1.id=t2.id-1) id-1 represents the previous row (entry), id is set to auto_increment. What you can see from this is I that am joining these two tables together so that I can compare the row of data prior. Whilst this query works this is my problem. I would like to know if there is a better way to do this because I may need to run a query from id to perhaps id-20. otherwise I need to perform the query above many, many times. By the way once I have joined the tables the query I need to run is as follows; SELECT * FROM t3 WHERE column1=a AND column2<=column3 Appreciate the help. Quote Link to comment Share on other sites More sharing options...
suprsnipes Posted May 30, 2009 Author Share Posted May 30, 2009 21 views and not one reply...bit harsh Quote Link to comment Share on other sites More sharing options...
fenway Posted June 6, 2009 Share Posted June 6, 2009 Wait... whyare you creating a new table to do this? Quote Link to comment Share on other sites More sharing options...
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