一、rownum oracle中没有top函数,只有rownum函数,且此函数后面不能用 ">",只能用"<" 。 [以下原理为转帖] 1 Oracle executes your query. 2 Oracle fetches the first row and calls it row number 1. 3 Have we gotten past row number meets the criteria? If no, then Oracle discards the row, If yes, then Oracle return the row. ...
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