MySQL-选择table1.something，table2。*替换所有列，如％something％

Question

I have following query:

SELECT `mmetal`.`id`, `mmetal`.`name`, `steelmarks`.`EN`, `steelmarks`.`DIN` FROM `mmetal` LEFT JOIN `steelmarks` ON `mmetal`.`id`=`steelmarks`.`id` WHERE REPLACE(REPLACE(REPLACE(REPLACE(`name`,' ',''),'\)',''),'\(',''),'-','') LIKE '%something%'

(REPLACE - replacing of " ", "(", ")", "-" in name column)

1) steelmarks table have about 15 columns - I need to replace

`mmetal`.`id`, `mmetal`.`name`, `steelmarks`.`EN`, `steelmarks`.`DIN`,`steelmarks`.`column3`,...,...,...`

with something like

`mmetal`.`id`, `mmetal`.`name`, `steelmarks`.*

but it not works

2) I wish to use LIKE function with REPLACE to all selected columns except id columns in both tables, not only "name". Something like:

WHERE REPLACE(REPLACE(REPLACE(REPLACE(ALL COLUMNS,' ',''),'\)',''),'\(',''),'-','') LIKE '%something%'

now i need to use

WHERE REPLACE...column1 LIKE %something% OR REPLACE...column2 LIKE %something% OR REPLACE...column3 LIKE %something% OR ...

Do you have any suggestion for my questions, please?

Answer 1

The replace and like operators only operate on one column at a time. The following might do what you want, but you still have to list all the columns:

REPLACE(REPLACE(REPLACE(REPLACE(concat_ws('|', col1, col2, col3, . . . ),' ',''),'\)',''),'\(',''),'-','') LIKE '%something%'

This concatenates the values together with a separator.

Alternatively, you could query INFORMATION_SCHEMA.COLUMNS with something like:

select concat(replace(<YOUR EXPRESSION HERE>, 'col1', c.column_name), ' and')
from information_schema.columns c
where table_name = YOURTABLEHERE

Then use the results to construct your query.