SQL: the primary key of a data table is of the varchar type and does not add itself. how can I insert a primary key when inserting data?

Source: Internet
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SQL: the primary key of a data table is of the varchar type and does not increase itself. how can I insert a primary key when inserting data? SQL: the primary key of a data table is of the varchar type and does not increase itself. how can I insert a primary key when inserting data?

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SQL: the primary key of a data table is of the varchar type and does not add itself. how can I insert a primary key when inserting data?

Why is the primary key set to varchar?
Maybe you have special requirements! When inserting data, it is the same as other fields!

That is to say, you need to use UUID. then you can use a program to generate UUID.

Use uuid as the primary key.

UUID when primary key insert

Composer require ramsey/uuid

Use RamseyUuidUuid;
$ Uuid1 = Uuid: uuid1 ();
Echo $ uuid1-> toString ()

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