primary key sql 1

primary key sql

/* A primary key allows each record in a table to be uniquely identified. There can only be one
primary key per table, and you can assign this constraint to any single or combination of columns.
However, this means each value within this column(s) must be unique.
Typically in a table, the primary key is an ID column, and is usually paired with the AUTO_
INCREMENT keyword. This means the value increases automatically as new records are created. */
CREATE TABLE stats(id INT NOT NULL PRIMARY KEY, name TEXT)

Here is what the above code is Doing:
1. We create a table called stats.
2. We create a column called id, which is an integer.
3. We add the NOT NULL constraint, which means the column cannot be empty.
4. We add the PRIMARY KEY constraint, which means the column must be unique.
5. We create a column called name, which is a text field.

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