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

Find the name of account that has the lowest total checking and saving balance.
SELECT T1.name FROM accounts AS T1 JOIN checking AS T2 ON T1.custid = T2.custid JOIN savings AS T3 ON T1.custid = T3.custid ORDER BY T2.balance + T3.balance LIMIT 1
SELECT "T1"."name" FROM "accounts" "T1" JOIN "checking" "T2" ON "T1"."custid" = "T2"."custid" JOIN "savings" "T3" ON "T1"."custid" = "T3"."custid" ORDER BY "T2"."balance" + "T3"."balance" FETCH FIRST 1 ROWS ONLY