如果梦想与实现之间有一道不可逾越的鸿沟,那么“执行力”就是跨越这道鸿沟的桥梁。
例子:
declare @a varchar(max) set @a=replicate(cast('a' as varchar(max)),10000) select datalength(@a) select @a
说明:
1.replicate,重复一个值N次,如:select replicate ('ABC', 30)
2.cast类型转换,如:select cast('2008-9-1' as smalldatetime)
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