存儲過程如何寫一個for循環(huán)？SQL Server 中沒有For循環(huán)，可以使用while循環(huán)代替，另外你寫的存儲過程還有幾處有問題，一并給你改過來了。CREATE PROCEDURE AddStude

存儲過程如何寫一個for循環(huán)？

SQL Server 中沒有For循環(huán)，可以使用while循環(huán)代替，另外你寫的存儲過程還有幾處有問題，一并給你改過來了。CREATE PROCEDURE AddStudents AS Begin Declare @n bigint Declare @Sql nvarchar(225) set @n=0while @n

sqlserver存儲過程中循環(huán)遍歷結(jié)果集？

sql1=select * from (select *， row_number() over(order by username ) as rowNumber from users where regfrom="&admin&") as t where t.rowNumber > 0 and t.rowNumber <= 0 30 order by username怎么會有27 條記錄呢，除非你的表 一共就27條記錄吧。用游標(biāo)或臨時表--游標(biāo)declare youbiao1 for 查詢1open youbiao1fetch next from youbiao1 into 變量while @@FETCH_STATUS = 0begin 里面一次套用end--臨時表declare @ID intset @ID = 1while Exists(select * from 表)begin --處理 -- set @ID = @ID 1end

oracle存儲過程loop字符串遍歷？

declare x varchar2(20)v_length inty intv_str varchar2(1)begin x:="wqr3331412rr" select length(x) into v_length from dual y:=1 while y<=v_length loop select substr(x，y，1) into v_str from dual dbms_output.put_line(v_str) y:=y 1 end loopend