Please check my mySQL query for phpMyAdmin -


i in need of changing multiple records in database. i'm new if @ have figured out far through research , let me know if looks correct appreciate it.

i have few thousand fields contain "0" , need remove every "0" contains nothing. ran query find them all.

select * `wp_postmeta` `meta_key` = '_regular_price' , `meta_value` = '0'

i need every record or row of "meta_value" contains "0" empty. after looking around think can run following in phpmyadmin query remove "0" every "meta_value" contains "0" , leave others alone.

does following correct?

update `wp_postmeta` set `meta_value` = '' `meta_value` =0;

thanks help.

if want remove database, want use this:

delete `wp_postmeta` `meta_value` = 0 , `meta_key` = '_regular_price'

you'll have understand difference between value containing '' (a string 0 characters), 0 (integer), '0' (a string containing 0) , null value (or no value @ all).

check database if meta_value column contains varchar or int (in case it's varchar suppose) , if column may contain null value (=nullable).


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