sql截取取最后一个符号后面的内容（或前面）

SELECT a.id,a.name,a.dept_id,b.name,b.name_path, REVERSE( LEFT( REVERSE(b.name_path),LOCATE('→' , REVERSE(b.name_path) )-1)  )  ,REVERSE(SUBSTRING(REVERSE(b.name_path),LOCATE('→' , REVERSE(b.name_path

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