oracle常用更新数据语句

1.联表更新

UPDATE T_DEV_ASSET_ACCOUNT 
SET T_DEV_ASSET_ACCOUNT.DEVICE_TYPE = ( SELECT ID FROM T_DEV_DEVICE_TYPE WHERE T_DEV_ASSET_ACCOUNT.PICTURE = T_DEV_DEVICE_TYPE.DEVICE_CATEGORY ) 
WHERE
	id BETWEEN 40000 
	AND 45907

2.同一张表，用不同字段截取填充另外一字段

UPDATE T_DEV_ASSET_ACCOUNT 
SET T_DEV_ASSET_ACCOUNT.DEVICE_MODAL = 
	SUBSTR( T_DEV_ASSET_ACCOUNT.DEVICE_CODE, 3 ) 

WHERE
	T_DEV_ASSET_ACCOUNT.DEVICE_CODE LIKE 'B-%'

3.根据表名查询所有约束

select constraint_name,constraint_type,search_condition
 from user_constraints
 where table_name = 'T_SPARES_USE_BILL_DETAILED'

4.根据约束名称删除约束

alter table T_SPARES_USE_BILL_DETAILED drop constraint SYS_C00161785

5.分页查询

select * from
    (
        select A.*,ROWNUM RN from
        (
            select
            a.spares_num as sparesNum,
            b.spares_name as sparesName,
            b.spares_type as sparesType,
            b.modal as modal,
            a.brand as brand,
            a.spares_ownership as sparesOwnership,
            a.storage_statistics as storageStatistics,
            a.outbound_statistics as outboundStatistics,
            a.average_monthly_consumption as averageMonthlyConsumption,
            a.monthly_total_consumption as monthlyTotalConsumption,
            a.safety_stock as safetyStock,
            a.price as price,
            a.urgency as urgency,
            b.unit as unit,
            a.LAST_UPDATE_DATE as lastUpdateDate

            from t_spares_account a
            left join t_spares b
            on a.spares_num = b.spares_num
						
						where ......
            order by a.id desc
        ) A
            where ROWNUM <= #{limit}
    )
            where RN > #{page}

6.短时间内数据恢复

insert into tablename select *
from tablename as of timestamp to_timestamp('2017-01-08 11:00:00','yyyy-mm-dd hh24:mi:ss')

select语句能查询到这一时间存在的数据，重新插入。