如何在SQL Server中一次更改多个列 - How to ALTER multiple columns at once in SQL Server

问题：

I need to ALTER the data types of several columns in a table.我需要ALTER表中几列的数据类型。

For a single column, the following works fine:对於单列，以下工作正常：

ALTER TABLE tblcommodityOHLC
ALTER COLUMN
    CC_CommodityContractID NUMERIC(18,0) 

But how do I alter multiple columns in one statement?但是，如何在一条语句中更改多列？ The following does not work:以下内容不起作用：

ALTER TABLE tblcommodityOHLC
ALTER COLUMN
    CC_CommodityContractID NUMERIC(18,0), 
    CM_CommodityID NUMERIC(18,0)

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解决方案：

参考一： https://en.stackoom.com/question/EXY8
参考二： https://stackoom.com/question/EXY8