CREATE TABLE checking (custid VARCHAR2)
CREATE TABLE accounts (name VARCHAR2, custid VARCHAR2)

Find the number of checking accounts for each account name.
SELECT COUNT(*), T1.name FROM accounts AS T1 JOIN checking AS T2 ON T1.custid = T2.custid GROUP BY T1.name
SELECT COUNT(*), "T1"."name" FROM "accounts" "T1" JOIN "checking" "T2" ON "T1"."custid" = "T2"."custid" GROUP BY "T1"."name"