how to delete every alternate row in access table

i have a huge acces开发者_开发百科s table containing about 400000 rows . what sql query can i give to delete every alternate row in the table. ?

I do have a column in the table which has values from 1 , 2, 3 ,4 .... about 400000 .

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Try using Mod. Something like

DELETE Table1.*
FROM Table1
WHERE ((([ID] Mod 2)=0));

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Assuming your table's name is "table", and your column with the line number is named "id", it would be

DELETE FROM table WHERE MOD(id,2)=0

Edit: Apparently, this is the wrong Syntax for MS Access. Use astanders solution below.