select * from [table_name] where [colum_name] like '%특정단어%';
SELECT REPLACE([colum_name], '%특정단어%', '바꿀단어') FROM [table_name] WHERE [colum_name] LIKE '%특정단어%';
UPDATE [table_name] SET [colum_name] = REPLACE([colum_name], '특정단어', '바꿀단어');