[
  {
    "type": "alter_table",
    "description": "Make billingLineItems quantity column unsigned",
    "database": "kiosk_buykiosk",
    "check_query": "SELECT COLUMN_TYPE FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_SCHEMA='kiosk_buykiosk' AND TABLE_NAME='billingLineItems' AND COLUMN_NAME='quantity' AND COLUMN_TYPE LIKE '%unsigned%'",
    "sql": "ALTER TABLE `billingLineItems` MODIFY COLUMN `quantity` int unsigned NOT NULL DEFAULT 1"
  }
]