INSERT INTO ${tableName} SELECT * FROM ${lastTableName} WHERE CollectTime < '${date}' SELECT * INTO ${tableName} FROM ${lastTableName} WHERE CollectTime < '${date}' delete from ${tableName} where CollectTime < '${day}' SELECT name FROM SysObjects Where XType='U' AND name = '${saveTableName}' SELECT COUNT(CollectTime) num FROM ${saveTableName} WHERE CollectTime < '${day}'