English 中文(简体)
日期和时间
原标题:Text to Date & time
  • 时间:2010-06-23 14:22:52
  •  标签:
  • oracle

我有两个领域:日期和时间。 两者均采用格式。 我需要把它们合并为一个日期/时间格式,这样我们就可以缩短使用的时间。 我们正在使用目前的日期/时间——案文日期/时间。 将日期案文领域的格式改为具有日期/时间格式的一个领域的最佳方式。 谢谢。

问题回答
select to_date (date_field || time_field,  xxx ) from ...

将xxx改为与加固值相对应的格式。 例如,如果日期_菲尔德等于01-JAN-2010,时间-实地为23:49:12,那么:

select to_date (date_field || time_field,  DD-MON-YYYYHH24:MI:SS ) from ...




相关问题
Export tables from SQL Server to be imported to Oracle 10g

I m trying to export some tables from SQL Server 2005 and then create those tables and populate them in Oracle. I have about 10 tables, varying from 4 columns up to 25. I m not using any constraints/...

Connecting to Oracle 10g with ODBC from Excel VBA

The following code works. the connection opens fine but recordset.recordCount always returns -1 when there is data in the table. ANd If I try to call any methods/properties on recordset it crashes ...

How to make a one to one left outer join?

I was wondering, is there a way to make a kind of one to one left outer join: I need a join that matches say table A with table B, for each record on table A it must search for its pair on table B, ...

Insert if not exists Oracle

I need to be able to run an Oracle query which goes to insert a number of rows, but it also checks to see if a primary key exists and if it does, then it skips that insert. Something like: INSERT ALL ...

How can I store NULLs in NOT NULL field?

I just came across NULL values in NOT-NULL fields in our test database. How could they get there? I know that NOT-NULL constraints can be altered with NOVALIDATE clause, but that would change table s ...

Type reference scope

I m studying databases and am currently working on a object-relational DB project and I ve encountered a small problem with the number of possible constraints in an object table. I m using "Database ...

OracleParameter and DBNull.Value

we have a table in an Oracle Database which contains a column with the type Char(3 Byte). Now we use a parameterized sql to select some rows with a DBNull.Value and it doesn t work: OracleCommand ...

热门标签