is-null.rpt
来自「本程序中即有讲义」· RPT 代码 · 共 33 行
RPT
33 行
title_id advance
-------- ---------------------
MC2222 .0000
MC3026 NULL
PC9999 NULL
PS2091 2275.0000
PS3333 2000.0000
PS7777 4000.0000
TC4203 4000.0000
(所影响的行数为 7 行)
discounttype stor_id lowqty highqty discount
---------------------------------------- ------- ------ ------- --------
Initial Customer NULL NULL NULL 10.50
Volume Discount NULL 100 1000 6.70
Customer Discount 8042 NULL NULL 5.00
(所影响的行数为 3 行)
discounttype stor_id lowqty highqty discount
---------------------------------------- ------- ------ ------- --------
Initial Customer NULL NULL NULL 10.50
Volume Discount NULL 100 1000 6.70
(所影响的行数为 2 行)
discounttype stor_id lowqty highqty discount
---------------------------------------- ------- ------ ------- --------
(所影响的行数为 0 行)
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