Question

如何打印包含超过8000个字符的字符串（例如动态查询）？

Declare @sql varchar(max)
set @Qry='....(more than 8000 char)'
Print (@Qry)

上面的内容仅打印@Qry的前8000个字符，并剪去其余的字符。

Answer 1

问题在于VARCHAR（MAX）最多可容纳2gb的数据，但是print（）仅向终端打印8000个字符。因此，您必须将字符串分成8000个字符块，然后分别打印。例如

declare @test varchar(max);
declare @loop int = 1;
declare @length int =0;
declare @printed int =0;

/*build an exceptionally long string.*/
set @test= 'select ''1000000000000000000000000000000000000000000''';

while @loop < 1001 
begin
     set @test = @test + ',''12345678901234567890123456789012345678901234567890123456789012345678901234567890''';
     set @loop = @loop + 1;

end;
/*!build an exceptionally long string.*/

set @length = len(@test);
while @printed < @length
BEGIN
    print(substring(@test,@printed,8000));
    set @printed = @printed + 8000; 
END

使用Print（）打印8000个以上的字符

1 个答案: