我有一个带有 nvl 和 case 语句的 SQL，必须将其转换为 Informatica 表达式

Question

我有以下 SQL 声明：

nvl(W_SALES_INVOICE_LINE_FS.INVOICED_QTY,
case nvl(W_SALES_INVOICE_LINE_FS.NET_AMT,0) when 0 then W_SALES_INVOICE_LINE_FS.INVOICED_QTY
else -1 end)

有人可以帮助我使用 ISNULL 和 DECODE() 将其转换为 Informatica 表达式。我尝试了以下并给出了解析错误：

IIF(ISNULL(EXT_INVOICED_QTY), 
DECODE(EXT_NET_AMOUNT, IIF(ISNULL(EXT_NET_AMOUNT),0,EXT_NET_AMOUNT) =0, EXT_INVOICED_QTY, -1),
EXT_INVOICED_QTY)

注意事项：

W_SALES_INVOICE_LINE_FS.INVOICED_QTY = EXT_INVOICED_QTY W_SALES_INVOICE_LINE_FS.NET_AMT = EXT_NET_AMOUNT

Answer 1

您的 SQL 声明有点奇怪。我们来分析一下：

  W_SALES_INVOICE_LINE_FS.INVOICED_QTY != NULL =>  W_SALES_INVOICE_LINE_FS.INVOICED_QTY
  W_SALES_INVOICE_LINE_FS.INVOICED_QTY = NULL AND W_SALES_INVOICE_LINE_FS.NET_AMT = NULL => W_SALES_INVOICE_LINE_FS.INVOICED_QTY (but it's NULL)
  W_SALES_INVOICE_LINE_FS.INVOICED_QTY = NULL  AND W_SALES_INVOICE_LINE_FS.NET_AMT != NULL = > -1

看来你只需要有完全相同的输出：

  DECODE ( TRUE,
    NOT isNULL( EXT_INVOICED_QTY ),  EXT_INVOICED_QTY , 
     isNULL(EXT_NET_AMT), NULL,
     -1)

Answer 2

下面使用DECODE函数来return你想要的

Link 如果您对 DECODE 有任何疑问：http://forgetcode.com/Informatica/1057-Decode-Value-Search-or-Nested-If-Else

DECODE (TRUE,
NOT isNULL(EXT_INVOICED_QTY), EXT_INVOICED_QTY,
isNULL(EXT_NET_AMT), NULL,
-1)

祝你好运！

我有一个带有 nvl 和 case 语句的 SQL，必须将其转换为 Informatica 表达式

I have a SQL with nvl and case statement that has to be converted into Informatica expression

sql

oracle

informatica

informatica-powercenter