MySQL Workbench ERROR 1064
Remove the (11) from the DOUBLE(11):

`f_sells` DOUBLE  NULL DEFAULT NULL ,


Approximate numeric dataypes (Float and Double) need no parameter. There is also a non-standard syntax with 2 parameters. From the MySQL docs, Floating-Point Types (Approximate Value): 


  MySQL allows a nonstandard syntax: FLOAT(M,D) or REAL(M,D) or DOUBLE PRECISION(M,D). Here, “(M,D)” means that values can be stored with up to M digits in total, of which D digits may be after the decimal point. For example, a column defined as FLOAT(7,4) will look like -999.9999 when displayed. MySQL performs rounding when storing values, so if you insert 999.00009 into a FLOAT(7,4) column, the approximate result is 999.0001.