Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_203_293 ( id number, "years of appearance" text, "title" text, "network" text, "character name" text, "actor" text, "notes" text )

### Question ###
who was the first character on abc to be hiv positive ?

### Accurate SQL ###

SELECT "character name" FROM table_203_293 WHERE "network" = 'abc' ORDER BY "years of appearance" LIMIT 1