Select 'STK_'|| <@WSTOCKID@> ||'.jpg' Path , 'STK_'|| <@WSTOCKID@> ||'.jpg' dest FROM
RDB$DATABASE 
union
Select 'STK_'|| <@WSTOCKID@> ||'.jpg' Path , 'STK_'|| <@WSTOCKID@> ||'.png' dest FROM
RDB$DATABASE 
union
Select 'STK_'|| <@WSTOCKID@> ||'.jpg' Path , 'STK_'|| <@WSTOCKID@> ||'.gif' dest FROM
RDB$DATABASE 
union
Select 'STK_'|| <@WSTOCKID@> ||'.jpg' Path , 'STK_'|| <@WSTOCKID@> ||'.bmp' dest FROM
RDB$DATABASE 
