#! /bin/bash

main() {
   set -e
   set -o pipefail

   local bin=./0_setup
   local cmds=(
      'DROP TABLE IF EXISTS a'
      'CREATE TABLE a(
         x INT,
         y VARCHAR(20),
         PRIMARY KEY (x)
      )'
      'DROP TABLE IF EXISTS b'
      'CREATE TABLE b(
         x INT,
         y VARCHAR(20),
         PRIMARY KEY (x)
      )'
      'SELECT * FROM a'
      'INSERT INTO a
         (x, y)
         VALUES
         (4, "a")
      '
      'SELECT * FROM a'
      'SELECT * FROM b'
      'INSERT INTO b
         (x, y)
         VALUES
         (5, "b")
      '
      'SELECT * FROM b'
      'UPDATE b
         SET x=4
         WHERE y="b"
      '
      'SELECT * FROM b'
      'SELECT * FROM a JOIN b WHERE a.x == b.x'
      'SELECT a.y, b.y FROM a JOIN b WHERE a.x == b.x'
   )

   for cmd in "${cmds[@]}"; do
      echo =================
      $bin -q "$cmd"
      echo
   done
}

main "$@"