if you search in Qlikview help you can find the difference, this is a copy
match( str, expr1 [ , expr2,...exprN ] )
The match function performs a case sensitive comparison.
Example:
match( M, 'Jan','Feb','Mar')
returns 2 if M = Feb
returns 0 if M = Apr or jan
mixmatch( str, expr1 [ , expr2,...exprN ] )
The mixmatch function performs a case insensitive comparison.
Example:
mixmatch( M, 'Jan','Feb','Mar')
returns 1 if M = jan
wildmatch( str, expr1 [ , expr2,...exprN ] )
The wildmatch function performs a case insensitive comparison and permits the use of wildcard characters ( * and ?) in the comparison strings.
Example:
wildmatch( M, 'ja*','fe?','mar')
returns 1 if M = January
returns 2 if M = fex
