短語(yǔ)詞組短語(yǔ)derived relational algebra operators 關(guān)系代數(shù)的派生算子original relational algebra operators 原始算子See Relational Operators 見關(guān)系運(yùn)算符supports relational operators 支持關(guān)系操作符Relational and Logical Operators 關(guān)系和邏輯運(yùn)算符Relational and equality operators 關(guān)系運(yùn)算子Boolean and relational operators 佈爾和關(guān)系操作符;佈爾操作和關(guān)系操作Relational Operators Relational Operators 關(guān)系運(yùn)算子 返回 relational operator