English 中文(简体)
我们能够有一个数学功能的 cur子
原标题:Can we have a cursor on mathematical functions
  • 时间:2011-10-24 15:15:41
  •  标签:
  • sql
  • oracle

我正试图以一笔总付的方式建立一个粉碎 cur。

CURSOR DATA_CURSOR IS
SELECT SUM(A)+SUM(B) FROM DATA_TABLE

我猜想,这不是这样做的正确方式......我是如何创造的?

最佳回答

您需要点名,例如:

CURSOR DATA_CURSOR IS
SELECT SUM(A)+SUM(B) AS SUM_AB
FROM DATA_TABLE
问题回答

暂无回答




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