How i can start id a value 100

Answer 1

You mean if the value of ID is null? If so, try something like this
SELECT NVL(ID,100) FROM TABLE;

Answer 2

You mean “add a value 100”?

Answer 3

EL KEMMAL Abdelhamid,
Your question is not clear, try to reassamble your question or give a attempt to explain your question abit more.
Something like this?
SELECT * FROM `table` WHERE id='100';
If you trying to increment an id, make sure you set it to auto_increment or make an additional row for incremention.