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我在基表test1上创建了一个视图,并且在创建时添加了两列。试图在视图创建中添加更新
create or replace force view abc1 as (select A.*,cast(NULL as timestamp) AS new1,cast(NULL as varchar2) AS new2 from test1 A);
所以创建视图后,它具有数据如下:
SELECT * FROM ABC1;
TT | TT_C2 | TT_DAY | TT_HOURLY | OC | SEV | EXTRACOL | IDENTIFIER | NEW1 | NEW2
1468309423961 | 2016-07-12 07:43:43.0 | 12-07-2016 | 12-07-2016 07 | abc | Critical | asdf | 1 | null | null
1468922692865 | 2016-07-19 10:04:52.0 | 19-07-2016 | 19-07-2016 10 | abc | Critical | asdf | 1 | null | null
1568308812001 | 2019-09-12 17:20:12.0 | 12-09-2019 | 12-09-2019 17 | abc1 | Major | asdf | 1 | null | null
1468308812001 | 2016-07-12 07:33:32.0 | 12-07-2016 | 12-07-2016 07 | abc2 | Minor | asdf | 1 | null | null
1468308815972 | 2016-07-12 07:33:35.0 | 12-07-2016 | 12-07-2016 07 | abc | Critical | asdf | 1 | null | null
现在我试图更新名new1列是timestmap数据类型的,但我不能更新,因为一定的局限性的看法..
update view abc1 set new1 = DATEADD('SECOND', (TT)/1000), DATE '1970-01-01') WHERE new1 IS NULL;
错误来是::
Syntax error in SQL statement "UPDATE ABC1 SET NEW1 = DATEADD('SECOND', (TT)/1000)[*], DATE '1970-01-01') WHERE NEW1 IS NULL "; expected "[, ::, *, /, %, +, -, ||, ~, !~, NOT, LIKE, REGEXP, IS, IN, BETWEEN, AND, OR, ,"; SQL statement:
update abc1 set new1 = DATEADD('SECOND', (TT)/1000), DATE '1970-01-01') WHERE new1 IS NULL [42001-176]
如何将我的更新“new1”列查询添加到我的视图创建中,以便仅在视图创建期间解决此问题。
这是我的基本表::
TT | TT_C2 | TT_DAY | TT_HOURLY | OC | SEV | EXTRACOL | IDENTIFIER
1468309423961 | 2016-07-12 07:43:43.0 | 12-07-2016 | 12-07-2016 07 | abc | Critical | asdf | 1
1468922692865 | 2016-07-19 10:04:52.0 | 19-07-2016 | 19-07-2016 10 | abc | Critical | asdf | 1
1568308812001 | 2019-09-12 17:20:12.0 | 12-09-2019 | 12-09-2019 17 | abc1 | Major | asdf | 1
1468308812001 | 2016-07-12 07:33:32.0 | 12-07-2016 | 12-07-2016 07 | abc2 | Minor | asdf | 1
1468308815972 | 2016-07-12 07:33:35.0 | 12-07-2016 | 12-07-2016 07 | abc | Critical | asdf | 1
在此先感谢!
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