mysql field name from variable

Question

is it possible to select field which name is string?

SELECT \'fieldname\' FROM table

i need this for trigger to have dynamic field names somethi

Answer 1

If you want to select more than one column:

SELECT GROUP_CONCAT(COLUMN_NAME) FROM information_schema.`COLUMNS` C 
WHERE table_name = 'MyTb' AND COLUMN_NAME LIKE '%whatever%' INTO @COLUMNS;

SET @table = 'MyTb';
SET @s = CONCAT('SELECT ',@columns,' FROM ', @table);

PREPARE stmt FROM @s;
EXECUTE stmt;