Use X++ wildcard (LIKE and NOT LIKE) in X++ select statement

For x++ select statements: 
select firstOnly batchHistory
     where batchHistory.Caption LIKE "*Test*" 

For x++ queries: 
queryBuildRange.value(*Test*);

Note the LIKE instead of a '==' and the wildcards inside of the quotations. All other combinations of wildcard usage will work here. This is the same functionality as what the users would put in the grid filtering(eg. '*TEST*' in the caption field filter on the batch tasks form). 

However, if you want to find all Captions that do not have the word Test in them (NOT LIKE, !LIKE), you will have to modify the above example slightly. 

For x++ select statements: 
select firstOnly batchHistory
     where !(batchHistory.Caption LIKE "*TEST*"); 

For x++ queries: 
queryBuildRange.value(!*Test*);