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ISNULL是判断是否为NULL而NULLIF是把值换成NULLCOALESCE是用别的来代替NULLSELECT employee_id,first_name,last_name,NULLIF (SALES_QUOTA,-1) as QuotaFROM employees就是把-1变成 NULLC... 阅读全文
posted @ 2009-04-06 19:17
emanlee
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The alert, confirm, and prompt boxes The three "commands" involved in creating alert, confirm, and prompt boxes are: window.alert() window.confirm() window.prompt() Lets look at them in detail. Th... 阅读全文
posted @ 2009-04-06 13:57
emanlee
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Date Formatting in Reporting Services - list of format codes The Date Formatting article that I wrote earlier seems to be quite popular. As a follow up to that , I stumbled accross the full list of... 阅读全文
posted @ 2009-04-06 13:10
emanlee
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