Merge branch 'main' of https://git.54sxh.cn/GuanM/HBNU-School

数据库/头歌/SQLServer第三章 - 数据的查询（一）.sh

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+USE Mall
+GO
+
+SET NOCOUNT ON
+
+---------- retrieving multiple column ----------
+-- ********** Begin ********** --
+SELECT prod_name, prod_price
+FROM Products;
+-- ********** End ********** --
+
+GO
+
+---------- retrieving all column ----------
+-- ********** Begin ********** --
+SELECT *
+FROM Products;
+-- ********** End ********** --
+
+GO