public static CreateConstraintExpression GetCreateUniqueConstraintExpression()
 {
     var expression = new CreateConstraintExpression(ConstraintType.Unique);
     expression.Constraint.TableName = TestTableName1;
     expression.Constraint.Columns.Add(TestColumnName1);
     expression.ApplyConventions(new MigrationConventions());
     return expression;
 }
 public static CreateConstraintExpression GetCreateMultiColumnPrimaryKeyExpression()
 {
     var expression = new CreateConstraintExpression(ConstraintType.PrimaryKey);
     expression.Constraint.TableName = TestTableName1;
     expression.Constraint.Columns.Add(TestColumnName1);
     expression.Constraint.Columns.Add(TestColumnName2);
     expression.ApplyConventions(new MigrationConventions());
     return expression;
 }