我正在尝试编写一个使用子查询因子分解“WITH .. AS”的过程,但是当我在它之前使用“IF .. THEN”时,出现语法错误,我不知道该怎么写,有什么帮助?
BEGIN
OPEN my_SYS_REFCURSOR FOR
IF .. IS NULL
THEN
WITH SomeName
AS (SELECT.....);
我正在尝试编写一个使用子查询因子分解“WITH .. AS”的过程,但是当我在它之前使用“IF .. THEN”时,出现语法错误,我不知道该怎么写,有什么帮助?
BEGIN
OPEN my_SYS_REFCURSOR FOR
IF .. IS NULL
THEN
WITH SomeName
AS (SELECT.....);
您只需要将IF
语句与OPEN
:
declare
my_sys_refcursor sys_refcursor;
begin
if (1=1) then /* condition satisfied, cursor from some table */
open my_sys_refcursor for
with somename as ( select '1' as one from dual)
select one
from somename;
else /* condition not satisfied, select from different tables */
open my_sys_refcursor for
with someOthername as ( select 'one' as one from dual)
select one
from someOthername;
end if;
end;