求Oracle創建視圖相關語句

通過表創建視圖，想讓視圖里面其中一個列數據=a時，讓其=b,數據=c時，讓其=d。我用的case..when。但是執行不成功，

代碼如下create?or?replace?view?yuebaoheji?as

select??SUBSTR(iufo_measure_pubdata.time_code,1,4)?as?kjnd,?SUBSTR(iufo_measure_pubdata.time_code,1,4)||SUBSTR(iufo_measure_pubdata.time_code,9,2)?as?kjqj,

case?when?(iufo_unit_info.unit_id='37000011')?then?iufo_unit_info.unit_id='37000111',

iufo_unit_info.unit_name?,?iufo_measure_data_duz9rms7.m10001?as?hejishouru,?iufo_measure_data_duz9rms7.m10002?,

iufo_measure_data_duz9rms7.m10006?,?iufo_measure_data_duz9rms7.m10010?,?iufo_measure_data_duz9rms7.m10011?,

iufo_measure_data_duz9rms7.m10013?as?qyqtxjcz,?iufo_measure_data_duz9rms7.m10015?,?iufo_measure_data_duz9rms7.m10019?,

iufo_measure_data_duz9rms7.m10020?,?iufo_measure_data_duz9rms7.m10022?,?iufo_measure_data_duz9rms7.m10023?,

iufo_measure_data_duz9rms7.m10027?,?iufo_measure_data_duz9rms7.m10028?,?iufo_measure_data_duz9rms7.m10030?,

iufo_measure_data_duz9rms7.m10032?,?iufo_measure_data_duz9rms7.m10036?,?iufo_measure_data_duz9rms7.m10037?,

iufo_measure_data_duz9rms7.m10039?,?iufo_measure_data_duz9rms7.m10041?,?iufo_measure_data_duz9rms7.m10045?,

iufo_measure_data_duz9rms7.m10046?,?iufo_measure_data_duz9rms7.m10048?,?iufo_measure_data_duz9rms7.m10049?,

iufo_measure_data_duz9rms7.m10053?,?iufo_measure_data_duz9rms7.m10054?,?iufo_measure_data_duz9rms7.m10230?,

iufo_measure_data_duz9rms7.m10056?,?iufo_measure_data_duz9rms7.m10060?,?iufo_measure_data_duz9rms7.m10061?,

iufo_measure_data_duz9rms7.m10063?,?iufo_measure_data_duz9rms7.m10065?,?iufo_measure_data_duz9rms7.m10069?,

iufo_measure_data_duz9rms7.m10070?,?iufo_measure_data_duz9rms7.m10071?,?iufo_measure_data_duz9rms7.m10073?,

iufo_measure_data_duz9rms7.m10077?,?iufo_measure_data_duz9rms7.m10078?,?iufo_measure_data_duz9rms7.m10079?,

iufo_measure_data_duz9rms7.m10081?,?iufo_measure_data_6urszruw.m10001?,?iufo_measure_data_6urszruw.m10013

from?iufo_unit_info,iufo_measure_data_6urszruw,iufo_measure_pubdata,iufo_measure_data_duz9rms7

where?iufo_measure_data_6urszruw.alone_id?=?iufo_measure_pubdata.alone_id

and?iufo_measure_data_duz9rms7.alone_id?=?iufo_measure_pubdata.alone_id

and?iufo_measure_data_6urszruw.line_no?=?iufo_measure_data_duz9rms7.line_no???and?iufo_unit_info.unit_id?=?iufo_measure_pubdata.code

and?(iufo_unit_info.level_code?like?'i%'?)

and?iufo_measure_pubdata.ver=0?and?iufo_measure_pubdata.formula_id?is?null;][/code]

------解決思路----------------------

引用:case?when?(iufo_unit_info.unit_id='37000011')?then?iufo_unit_info.unit_id='37000111',，除了我寫的這句case。。when，不對，其他可以正常執行

create?or?replace?view?yuebaoheji?as

select?SUBSTR(iufo_measure_pubdata.time_code,?1,?4)?as?kjnd,

SUBSTR(iufo_measure_pubdata.time_code,?1,?4)

------解決思路----------------------

SUBSTR(iufo_measure_pubdata.time_code,?9,?2)?as?kjqj,

case

when?(iufo_unit_info.unit_id?=?'37000011')?then

'37000111'

ELSE

iufo_unit_info.unit_id

END?unit_id,

iufo_unit_info.unit_name,

iufo_measure_data_duz9rms7.m10001?as?hejishouru,

iufo_measure_data_duz9rms7.m10002,

iufo_measure_data_duz9rms7.m10006,

iufo_measure_data_duz9rms7.m10010,

iufo_measure_data_duz9rms7.m10011,

iufo_measure_data_duz9rms7.m10013?as?qyqtxjcz,

iufo_measure_data_duz9rms7.m10015,

iufo_measure_data_duz9rms7.m10019,

iufo_measure_data_duz9rms7.m10020,

iufo_measure_data_duz9rms7.m10022,

總結

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