CREATE TABLE "high_school_statistics" (
  "year" text,
  "tckl" real,
  "sack" real,
  "p_ko_ret" real,
  "yards" real
);

Question: What is the total of TCKL in 2000 with a P/KO RET less than 14?
SQL: SELECT COUNT("tckl") FROM "high_school_statistics" WHERE "year"='2000' AND "p_ko_ret"<14;

Question: What is the highest YARDS with a TCKL more than 51 and less than 2 SACK?
SQL: SELECT MAX("yards") FROM "high_school_statistics" WHERE "tckl">51 AND "sack"<2;

Question: What is the total of all YARDS with 0 SACK and less than 14 P/KO RET?
SQL: SELECT COUNT("yards") FROM "high_school_statistics" WHERE "sack"=0 AND "p_ko_ret"<14;