query: SELECT count(DISTINCT source_system_code) FROM CMI_cross_references
question: How many different source system code for the cmi cross references there?
query_toks: SELECT count ( DISTINCT source_system_code ) FROM CMI_cross_references
query_toks_no_value: select count ( distinct source_system_code ) from cmi_cross_references
question_toks: How many different source system code for the cmi cross references there?