一、SQLserver SP --> oracle SP

1. str >> TO_CHAR
2. 定义、赋值 begin declare @aaa varchar(max) set @aaa='ssss' >>> declare aaa varchar2(4000) begin aaa := 'sss'
3. 时间 cast() >>>> to_char(sysdate,'yyyymmdd hh24:mi:ss')
4. dbo.StrJoin(asd,';') >>>>> replace(wmconcat(asd),',' ,';')
5. oracle在存储过程中清空、删除、创建表`

execute immediate'truncate table t_name

execute immediate'drop table t_name

execute immediate'create table t_name as select>>>

6. 字符串截取

left(aaa,1) 左面起1个字符 >>> substr(aaa,1,1)

right(aaa,2) 右面起2个字符 >>> substr(aaa,-2)

7. exists()

if exists(select ...) 
>>>>>
select count(1) into v_count from t_name
if v_count >0 then

8. substring >>> substr
9. char(10) >>> chr(10)
10. CHARINDEX('子串','sdsq',2) INSTR('sdsq','子串',2)
    11.字段数据拼接

dbo.StrJoin(ziduan,';')(默认为逗号)>>> replace(wm_concat(ziduan),',',';')

二. SP调用SP
方法1：

execute immediate'begin  sp_name(:1,:2); end;'
using out v1,v2;

方法2:

sp_name(v1,v2);
insert into t_name values (v1,v2);

三、游标
SQLserver的游标可以写在begin中
oracle 游标需要写在begin之前