在Oracle过程中检查UDT表的可空性
两个问题:在Oracle过程中检查UDT表的可空性,oracle,user-defined-types,Oracle,User Defined Types,两个问题: 如何在存储过程中检查参数的可空性 如何在存储过程中查找参数的计数(*)(即行计数) 不能使用“按二进制整数索引”创建UDT,可以执行以下操作: type NumberTable is table of number index by binary_integer; create procedure TestNumberTable ( p_NumTable IN NumberTable Default Cast(Null as NumberTable) ) a
不能使用“按二进制整数索引”创建UDT,可以执行以下操作:
type NumberTable is table of number index by binary_integer;
create procedure TestNumberTable
(
p_NumTable IN NumberTable Default Cast(Null as NumberTable)
)
as
/* code body */
问题1:“可空性”是指“是否为空”吗?如果是这样,这将起作用:
create type NumberTable is table of number;
问题2:对于计数:
create procedure TestNumberTable
( p_NumTable IN NumberTable Default null)
as
if p_NumTable is null then
...
create procedure TestNumberTable
( p_NumTable IN NumberTable Default null)
as
dbms_output.put_line ('count is '||p_NumTable.count);
...