CREATE TABLE "table1_11240028_3" (
  "character" text,
  "portrayed_by" text,
  "relationship" text,
  "first_appearance" text,
  "last_appearance" text
);

Question: Which characters had their first experience in the episode "consequences"?
SQL: SELECT "character" FROM "table1_11240028_3" WHERE "first_appearance"='\"Consequences\"';

Question: What episode had the last appearances of the late wife of mac taylor?
SQL: SELECT "last_appearance" FROM "table1_11240028_3" WHERE "relationship"='Late wife of Mac Taylor';

Question: Which characters were portrayed by reed garrett?
SQL: SELECT "portrayed_by" FROM "table1_11240028_3" WHERE "character"='Reed Garrett';

Question: How many characters were portrayed by the informant of don flack?
SQL: SELECT COUNT("portrayed_by") FROM "table1_11240028_3" WHERE "relationship"='Informant of Don Flack';

Question: What episode was the last appearance of the character, rikki sandoval?
SQL: SELECT "last_appearance" FROM "table1_11240028_3" WHERE "character"='Rikki Sandoval';