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The count function returns a numerical type and will not get null
Will it benull这取决于你的sql跟ibatis没有任何关系。select count(1) from test where 1=0你可以使用这个sql证明一下会不会为null?
null
sql
ibatis
select count(1) from test where 1=0
Direct conversion toIntegerwill not work, but unboxing will.
Integer
int i = (Integer) null; //NullPointer Exception Integer i1 = (Integer) null; //null
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The count function returns a numerical type and will not get null
Will it be
null这取决于你的sql跟ibatis没有任何关系。select count(1) from test where 1=0你可以使用这个sql证明一下会不会为null?Direct conversion to
Integerwill not work, but unboxing will.