{
	"before": {
		"name": "global_block_whitelist",
		"comment": "A table which is on each local wiki, which when a row exists indicates that the associated global block is disabled on that local wiki.",
		"columns": [
			{
				"name": "gbw_id",
				"comment": "Key to gb_id in globalblocks database",
				"type": "integer",
				"options": { "notnull": true }
			},
			{
				"name": "gbw_address",
				"comment": "The target of the block which has been locally disabled. One of an IP address, IP range, or account.",
				"type": "binary",
				"options": { "length": 255, "notnull": true }
			},
			{
				"name": "gbw_target_central_id",
				"comment": "The central ID for the target of the block that has been locally disabled. 0 if the target is an IP address or IP range.",
				"type": "integer",
				"options": { "notnull": true, "unsigned": true, "default": 0 }
			},
			{
				"name": "gbw_by",
				"comment": "Key to user_id of the user who disabled the block locally.",
				"type": "integer",
				"options": { "notnull": true }
			},
			{
				"name": "gbw_by_text",
				"comment": "The username of the user who disabled the block locally.",
				"type": "binary",
				"options": { "length": 255, "notnull": true }
			},
			{
				"name": "gbw_reason",
				"comment": "The reason given for disabling the global block locally.",
				"type": "binary",
				"options": { "length": 767, "notnull": true }
			},
			{
				"name": "gbw_expiry",
				"comment": "The expiry timestamp for the global block. Blocks can have an infinite expiry.",
				"type": "mwtimestamp",
				"options": {
					"notnull": true,
					"CustomSchemaOptions": {
						"allowInfinite": true
					}
				}
			}
		],
		"indexes": [
			{
				"name": "gbw_by",
				"comment": "Used to find all global blocks disabled by a given user, to allow user merging.",
				"columns": [ "gbw_by" ],
				"unique": false
			}
		],
		"pk": [ "gbw_id" ]
	},
	"after": {
		"name": "global_block_whitelist",
		"comment": "A table which is on each local wiki, which when a row exists indicates that the associated global block is disabled on that local wiki.",
		"columns": [
			{
				"name": "gbw_id",
				"comment": "Key to gb_id in globalblocks database",
				"type": "integer",
				"options": { "notnull": true }
			},
			{
				"name": "gbw_address",
				"comment": "The target of the block which has been locally disabled. One of an IP address, IP range, or account.",
				"type": "binary",
				"options": { "length": 255, "notnull": true, "default": "" }
			},
			{
				"name": "gbw_target_central_id",
				"comment": "The central ID for the target of the block that has been locally disabled. 0 if the target is an IP address or IP range.",
				"type": "integer",
				"options": { "notnull": true, "unsigned": true, "default": 0 }
			},
			{
				"name": "gbw_by",
				"comment": "Key to user_id of the user who disabled the block locally.",
				"type": "integer",
				"options": { "notnull": true }
			},
			{
				"name": "gbw_by_text",
				"comment": "The username of the user who disabled the block locally.",
				"type": "binary",
				"options": { "length": 255, "notnull": true }
			},
			{
				"name": "gbw_reason",
				"comment": "The reason given for disabling the global block locally.",
				"type": "binary",
				"options": { "length": 767, "notnull": true }
			},
			{
				"name": "gbw_expiry",
				"comment": "The expiry timestamp for the global block. Blocks can have an infinite expiry.",
				"type": "mwtimestamp",
				"options": {
					"notnull": true,
					"CustomSchemaOptions": {
						"allowInfinite": true
					}
				}
			}
		],
		"indexes": [
			{
				"name": "gbw_by",
				"comment": "Used to find all global blocks disabled by a given user, to allow user merging.",
				"columns": [ "gbw_by" ],
				"unique": false
			}
		],
		"pk": [ "gbw_id" ]
	}
}