diff --git a/packages/tools/src/SqlDumper.ts b/packages/tools/src/SqlDumper.ts
index 3e3a08f01..ac55e7162 100644
--- a/packages/tools/src/SqlDumper.ts
+++ b/packages/tools/src/SqlDumper.ts
@@ -229,7 +229,7 @@ export class SqlDumper implements AlterProcessor {
         table.primaryKey.columns.map(x => x.columnName)
       );
     }
-    
+
     (table.foreignKeys || []).forEach(fk => {
       this.put(',&n');
       this.createForeignKeyFore(fk);
@@ -387,6 +387,7 @@ export class SqlDumper implements AlterProcessor {
         break;
     }
   }
+  changeConstraint(oldConstraint: ConstraintInfo, newConstraint: ConstraintInfo) {}
   dropForeignKey(fk: ForeignKeyInfo) {
     if (this.dialect.explicitDropConstraint) {
       this.putCmd('^alter ^table %f ^drop ^foreign ^key %i', fk, fk.constraintName);
diff --git a/packages/tools/src/diffTools.ts b/packages/tools/src/diffTools.ts
index 5cdc737fb..9a1c39559 100644
--- a/packages/tools/src/diffTools.ts
+++ b/packages/tools/src/diffTools.ts
@@ -294,6 +294,6 @@ export function getAlterTableScript(
 ): string {
   const plan = createAlterTablePlan(oldTable, newTable, opts, db, driver);
   const dmp = driver.createDumper();
-  plan.run(dmp);
+  plan.run(dmp );
   return dmp.s;
 }
diff --git a/packages/types/dumper.d.ts b/packages/types/dumper.d.ts
index 4e031efcf..a439deb40 100644
--- a/packages/types/dumper.d.ts
+++ b/packages/types/dumper.d.ts
@@ -1,9 +1,10 @@
+import { AlterProcessor } from './alter-processor';
 import { TableInfo } from './dbinfo';
 import { SqlDialect } from './dialect';
 
 export type TransformType = 'GROUP:YEAR' | 'GROUP:MONTH' | 'GROUP:DAY' | 'YEAR' | 'MONTH' | 'DAY'; // | 'GROUP:HOUR' | 'GROUP:MINUTE';
 
-export interface SqlDumper {
+export interface SqlDumper extends AlterProcessor {
   s: string;
   dialect: SqlDialect;
 
@@ -15,6 +16,5 @@ export interface SqlDumper {
   transform(type: TransformType, dumpExpr: () => void);
 
   endCommand();
-  createTable(table: TableInfo);
   allowIdentityInsert(table: NamedObjectInfo, allow: boolean);
 }