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sapaannet ไอที สุขภาพ ความงาม ธรรมะ สาระดี ข่าวตามกระแส: รวมคำสั่งและการใช้งาน Function จัดการ String (ข้อความ อักขระ) ใน PLSQL ORACLE
SQL String functions Examples for SQL Server, Oracle and PostgreSQL
