Initial

migrations/mysql/02129_payment_sort.sql

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+-- migrate:up
+SET @column_exists = (
+    SELECT COUNT(*)
+    FROM INFORMATION_SCHEMA.COLUMNS
+    WHERE TABLE_SCHEMA = DATABASE()
+      AND TABLE_NAME = 'payment'
+      AND COLUMN_NAME = 'sort'
+);
+
+SET @sql = IF(
+    @column_exists = 0,
+    'ALTER TABLE `payment` ADD COLUMN `sort` bigint NOT NULL DEFAULT 0 COMMENT ''Sort'' AFTER `fee_amount`',
+    'SELECT 1'
+);
+
+PREPARE stmt FROM @sql;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;
+
+UPDATE `payment`
+SET `sort` = `id`
+WHERE `sort` = 0;
+
+-- migrate:down
+SET @column_exists = (
+    SELECT COUNT(*)
+    FROM INFORMATION_SCHEMA.COLUMNS
+    WHERE TABLE_SCHEMA = DATABASE()
+      AND TABLE_NAME = 'payment'
+      AND COLUMN_NAME = 'sort'
+);
+
+SET @sql = IF(
+    @column_exists > 0,
+    'ALTER TABLE `payment` DROP COLUMN `sort`',
+    'SELECT 1'
+);
+
+PREPARE stmt FROM @sql;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;
+