fix(schema): fix diffing FKs in MySQL 8 (#1030)

packages/mysql-base/src/MySqlSchemaHelper.ts

@@ -62,7 +62,7 @@ export class MySqlSchemaHelper extends SchemaHelper {
   }
 
   getForeignKeysSQL(tableName: string, schemaName?: string): string {
-    return `select distinct k.constraint_name, k.column_name, k.referenced_table_name, k.referenced_column_name, c.update_rule, c.delete_rule `
+    return `select distinct k.constraint_name as constraint_name, k.column_name as column_name, k.referenced_table_name as referenced_table_name, k.referenced_column_name as referenced_column_name, c.update_rule as update_rule, c.delete_rule as delete_rule `
       + `from information_schema.key_column_usage k `
       + `inner join information_schema.referential_constraints c on c.constraint_name = k.constraint_name and c.table_name = '${tableName}' `
       + `where k.table_name = '${tableName}' and k.table_schema = database() and c.constraint_schema = database() and k.referenced_column_name is not null`;