ภาษา sql เซิร์ฟเวอร์กรณีร้ายจิตใจกันเกิน

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-- find everyone with  first_name contains d case insensitive manner
Make everthing either lower or upper case

SELECT FIRST_NAME , LAST_NAME 
FROM EMPLOYEES 
WHERE LOWER(FIRST_NAME) LIKE '%d%' ; 

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