Re: which is best for JOIN approach
Posted by:
Ra Nala
Date: February 25, 2016 05:50AM
Rick James Wrote:
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> How many rows in each table? How many rows do you
in first table we have 589000 rows and in right side table we have nearly 300000 rows. totally we i need to retrieve 589000 rows data if the data not matches from right table just i need to nulls.
> expect in the result? Is the query timing out?
yes, it is taking long time to pick you records when i apply your joining approach but when apply left joins to all my right side tables then it is extracting very fast.
> Which Engine are you using? Are there any WHERE clauses (other than ON)?
I am using InnoDB and mysql version is 5.6. yes there is WHERE clause at the end of my query.
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Re: which is best for JOIN approach
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February 25, 2016 05:50AM
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