hi.. i am working with vb.net, I try to find the solution for "if exist update else insert" however I could'nt find any suitable with vb.net. Can anyone help?
2 or more tables will be affected when I click save button.
1st. It will insert data in order_list (parent table) where order_no is the primary key.
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order_no | From | To
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wo_01 | W | JAT
wo_02 | x | JAB
wo_03 | Y | STU
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2nd. It will insert data details in order_list_details (child table) table. order_no with different products. eg:
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order_no | Product_id| Product_type
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wo_01 | A | A_A1
wo_01 | A | A_A2
wo_01 | B | B_B4
wo_02 | B | B_B4
wo_02 | C | C_C4
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What i did right now is 'Select Insert' to both table which then i realize that the order_no will be repeated. (I did not set order_no as primary key before realizing this matter)
