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Explain command type "All" issue
Posted by: Vipin PA
Date: February 14, 2020 03:20AM

Hi All,

I have a JOIN query that joining 5 tables. I have added indexes for all the fields that are using in the where clause. When I executed the EXPLAIN command for MySql, I got the first line like below.

id : 1
select_type : SIMPLE
table : td
type : ALL
possible_keys : expires_on,record_type
key : NULL
key_len : NULL
ref : NULL
rows : 3063
filtered : 38.49
Extra : Using where; Using temporary; Using filesort

I know type: All is not good.
Can anyone help me to change the type: All to other types like ref, etc?

Please let me know if you need any further information.

Thanks
Vipin

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Explain command type "All" issue
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February 14, 2020 03:20AM


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