關於「UNIQUE SQL」標籤，搜尋引擎有相關的訊息討論：

SQL UNIQUE Constraint - W3Schoolswww.w3schools.com › sql › sql_uniqueSQL SELECT DISTINCT Statement - W3Schoolswww.w3schools.com › sql › sql_distinctEGL: Journal Generator Abends at Step GL_JPROC.DD810 ...support.oracle.com › knowledgehow to display only unique rows - Oracle Com