}

    public ColumnInfo columnName() {
        return _columnName;
    }

    public ColumnInfo columnSessionId() {
        return _columnSessionId;
    }

    protected List<ColumnInfo> ccil() {
        List<ColumnInfo> ls = newArrayList();
        ls.add(columnCreatedTime());
        ls.add(columnExpiredTime());
        ls.add(columnName());
        ls.add(columnSessionId());

        return _columnHandlerParameter;
    }

    public ColumnInfo columnHandlerScript() {
        return _columnHandlerScript;
    }

    public ColumnInfo columnName() {
        return _columnName;
    }

    public ColumnInfo columnPermissions() {
        return _columnPermissions;
    }

    public ColumnInfo columnSortOrder() {
        return _columnSortOrder;
    }

        return _columnCronExpression;
    }

    public ColumnInfo columnJobLogging() {
        return _columnJobLogging;
    }

    public ColumnInfo columnName() {
        return _columnName;
    }

    public ColumnInfo columnScriptData() {
        return _columnScriptData;
    }

    public ColumnInfo columnScriptType() {
        return _columnScriptType;
    }

        return _columnCreatedBy;
    }

    public ColumnInfo columnCreatedTime() {
        return _columnCreatedTime;
    }

    public ColumnInfo columnName() {
        return _columnName;
    }

    public ColumnInfo columnUpdatedBy() {
        return _columnUpdatedBy;
    }

    public ColumnInfo columnUpdatedTime() {
        return _columnUpdatedTime;
    }

        return _columnExcludedPaths;
    }

    public ColumnInfo columnIncludedPaths() {
        return _columnIncludedPaths;
    }

    public ColumnInfo columnName() {
        return _columnName;
    }

    public ColumnInfo columnPermissions() {
        return _columnPermissions;
    }

    public ColumnInfo columnSortOrder() {
        return _columnSortOrder;
    }

        return _columnIntervalTime;
    }

    public ColumnInfo columnMaxAccessCount() {
        return _columnMaxAccessCount;
    }

    public ColumnInfo columnName() {
        return _columnName;
    }

    public ColumnInfo columnNumOfThread() {
        return _columnNumOfThread;
    }

    public ColumnInfo columnPaths() {
        return _columnPaths;
    }

        return _columnIntervalTime;
    }

    public ColumnInfo columnMaxAccessCount() {
        return _columnMaxAccessCount;
    }

    public ColumnInfo columnName() {
        return _columnName;
    }

    public ColumnInfo columnNumOfThread() {
        return _columnNumOfThread;
    }

    public ColumnInfo columnPermissions() {
        return _columnPermissions;
    }

		return field
	}
	if field, ok := schema.FieldsByName[name]; ok {
		return field
	}

	// Lookup field using namer-driven ColumnName
	if schema.namer == nil {
		return nil
	}
	namerColumnName := schema.namer.ColumnName(schema.Table, name)
	if field, ok := schema.FieldsByDBName[namerColumnName]; ok {
		return field
	}

	return nil
}

	AssertEqual(t, false, ok)
}

func findColumnType(dest interface{}, columnName string) (
	foundColumn gorm.ColumnType, err error,
) {
	columnTypes, err := DB.Migrator().ColumnTypes(dest)
	if err != nil {
		err = fmt.Errorf("ColumnTypes err:%v", err)
		return
	}

	for _, c := range columnTypes {
		if c.Name() == columnName {
			foundColumn = c
			break
		}
	}
	return
}

			if field := stmt.Schema.LookUpField(field); field != nil {
				name = field.DBName
			}
		}

		return m.DB.Raw(
			"SELECT count(*) FROM INFORMATION_SCHEMA.columns WHERE table_schema = ? AND table_name = ? AND column_name = ?",
			currentDatabase, stmt.Table, name,
		).Row().Scan(&count)
	})

	return count > 0
}

// RenameColumn rename value's field name from oldName to newName