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Existing requirements synchronize other database user information to our system. Their primary key ID is string and our primary key is long

2022-06-22 03:57:00 CSDN Q & A

During synchronization, some users' primary keys of the other party are pure numbers, which can be accessed through Long.value of transformation , Some users id Upper and lower case letters , When searching for the other party's user information I insert them into our library one by one .
Here is how to filter out the users found in the query id If there are characters, they will not be saved .

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