文章浏览阅读1.3w次,点赞8次,收藏24次。 有一段时间没用sqoop了,今天打开进行测试的时候,发现命令行总是出现下面这样的警示信息:Warning: /opt/module/sqoop/bin/…/…/hcatalog does not exist! HCatalog jobs will fail.Please set $HCAT_HOM..._......
文章浏览阅读3.3k次,点赞2次,收藏3次。转载:http://www.cnblogs.com/cztisthebest/p/5944591.html建立一个表后,为何检测出现Existence of index的警告 A table should contain at least one column, one index, one key, and one reference.可以不检查 Existence o_power des......
比如在Northwind数据库中有一个查询为SELECT c.CustomerId,CompanyName FROM Customers cWHERE EXISTS(SELECT OrderID FROM Orders o WHERE o.CustomerID=c.CustomerID) ...
比如在Northwind数据库中有一个查询为SELECT c.CustomerId,CompanyName FROM Customers cWHERE EXISTS(SELECT OrderID FROM Orders o WHERE o.CustomerID=c.CustomerID) ...