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There is a table with columns ID Number and date, ..
The problem: how to be on the same date may not have the same ID Number.
Example: ID Number 001 has been entering data in the 29th, then when the date of the ID Number 001 to conduct a second input on the same day then it is not allowed.
But when a different date, ID Number should have the same, ..
Help me please 🙁
Harysay, can you provide more examples? I’m not sure what you’re looking to do here.
If you make an ID and Date your Primary Keys, that will make it so that only one row with that exact data combination can exist in that table. Is that what you’re looking for?