How to exclude data

[MegL]

I'm new to Qlik and trying to design a dashboard.  I'd like to exclude rows from my data set if values within a column contain a string with "xxxx (a)", is there a way to do this in the data load editor or when designing the sheet. 

[Kushal_Chawda]

@MegL  try below

LOAD *

FROM Table

WHERE not wildmatch(Field,'*xxxx (a)*');