問題描述
假設我有一個 int 字段，我將默認值設置為 (0)，這可行，但我見過有人這樣做((0))，為什么?
Let's say I have an int field, and I set the default value as (0), which works, but I've seen people doing it like this instead ((0)),why?
推薦答案
((0)) 是它在目錄視圖中或在 SSMS 中生成腳本時的顯示方式.所以我認為當你看到它很可能是一個生成的腳本而不是從頭開始手寫的時候.
((0)) is how it will appear within the catalog views or if you generate a script in SSMS. So I think when you see that it's most likely a generated script and not hand-written that way from scratch.
也就是說，(0)、((0)) 甚至 ((((((((((((0))))))))))))) ...假設我數對了，額外的括號不會改變意思，只是可讀性.
That said, there is nothing different between (0), ((0)) or even (((((((((((((0))))))))))))) ... assuming I counted right, extra parentheses don't change the meaning, just readability.
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