SQL: The primary key of a data table is a varchar type, does not increment, how to insert a primary key when inserting data

SQL: The primary key of a data table is a varchar type, does not increment, how to insert a primary key when inserting data

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SQL: The primary key of a data table is a varchar type, does not increment, how to insert a primary key when inserting data

Why is the primary key set to a varchar type?
Maybe you have a special need! Inserting data is just like other fields, no!

The meaning is to use the UUID, then you use the program to generate the UUID.

Then use the UUID to make the key.

UUID when primary key insert

Composer require Ramsey/uuid

Use Ramseyuuiduuid;
$uuid 1 = uuid::uuid1 ();
echo $uuid 1->tostring ()

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