database - MySQL primary key column type for large tables -


I am working on a project with a larger DB table ( 700K rows ).

The mistake, I designed the DB schema when the rows were increasing, I had to increase the column type BigType ( x ) of the ID.

Now it is bigger (44). I'm afraid to set high x values ​​because I thought it could slow down the display. Maybe I'm wrong ..

Please help me solve the problem.

What type of column can I set up once and forget this problem?

Should I learn better in the field of DB Schema Design?

When you have the width of display BIGINT (44) "44" It does not affect the range of values ​​that you can store or the speed they can get.

For an Auto-Enerling ID you want to use a UNSIGNED number, eg BIGINT (44) UNSIGNED . This will double the boundaries of values ​​and add an extra hurdle, which is usually a good thing.

An unsigned INT will store up to 4,294,967,295 to store an unsigned BIGINT 18,446,744,073,70 9,551,615 - You are not going to fill out anytime soon.

You do not say how fast your maximum id is growing - if you are not inserting multiple rows then you should stay with UNSIGNED INT less space Takes.


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