Question

Oracle 10g Data Types Converting from SQL Server 2000

Asked by: titumukherjee

I would really appreciate if anyone would let me know what are the equivalent datatypes in Oracle 10g for the following SQL Server 2000 datatypes:

uniqueidentifier (16)
nvarchar (16)
nvarchar (48)
nvarchar (100)
nvarchar (200)
nvarchar (256)
ntext(16)
sql_variant
float (8)
datetime
tinyint (1)
smallint (2)
int (4)
bigint (8)

Thank you.




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Asked On
2007-02-11 at 20:40:18ID22158728
Tags

oracle

,

data

,

10g

,

sql

,

types

Topics

MS SQL DTS

,

Oracle Database

,

Oracle 10.x

Participating Experts
3
Points
500
Comments
6

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Answers

 

by: sujith80Posted on 2007-02-11 at 20:54:37ID: 18513012

uniqueidentifier (16) - AFAIK there is no exact equivalent. May be you can use a number sequence or ROWID instead.
nvarchar - NVARCHAR2 . You must specify the length as you want e.g. NVARCHAR2(20)
ntext(16) - NVARCHAR2
sql_variant - dont know, could be BLOB
float (8) - NUMBER
datetime - date
tinyint (1) - NUMBER
smallint (2) - NUMBER
int (4) - NUMBER
bigint (8) - NUMBER

 

by: titumukherjeePosted on 2007-02-11 at 21:00:08ID: 18513023

Sujith80,
Thanks for your reply. I found this white paper by oracle.
http://www.oracle.com/technology/tech/migration/ama/docs/ama_wp.pdf
I'm just not sure that this document will apply to 10g R2 as well...
Let me know your thoughts.
Regards.

 

by: igor_alphaPosted on 2007-02-11 at 21:03:37ID: 18513035

Hi titumukherjee,
In addition to sujith80 post:

uniqueidentifier (16) - just varchar(16) field, beacuse there are no builtin datatype in oracle for uniqueidentifier support.
Anyway, GUID can be initialized in oracle:
A column or local variable of uniqueidentifier data type can be initialized to a value in two ways:
1. Using the NEWID function.
2. Converting from a string constant in the following form (xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx, in which each x is a hexadecimal digit in the range 0-9 or a-f). For example, 6F9619FF-8B86-D011-B42D-00C04FC964FF is a valid uniqueidentifier value.

sql_variant - SYS.ANYDATA
http://download-west.oracle.com/docs/cd/B10501_01/appdev.920/a96612/t_anydat.htm#ARPLS077

 

by: titumukherjeePosted on 2007-02-11 at 21:10:41ID: 18513060

igor_alpha:
Would you have any ideas whether the ado.net command importrow would work if I use uniqueidentifier (16) = varchar(16) field. Importrow from SQL Server source datarow to Oracle destination row.

How can I use
  STATIC FUNCTION ConvertNumber(num IN NUMBER) RETURN AnyData,
  STATIC FUNCTION ConvertDate(dat IN DATE) RETURN AnyData,
  STATIC FUNCTION ConvertChar(c IN CHAR) RETURN AnyData,
  STATIC FUNCTION ConvertVarchar(c IN VARCHAR) RETURN AnyData,
  STATIC FUNCTION ConvertVarchar2(c IN VARCHAR2) RETURN AnyData,
  STATIC FUNCTION ConvertRaw(r IN RAW) RETURN AnyData,
  STATIC FUNCTION ConvertBlob(b IN BLOB) RETURN AnyData,
  STATIC FUNCTION ConvertClob(c IN CLOB) RETURN AnyData,
  STATIC FUNCTION ConvertBfile(b IN BFILE) RETURN AnyData,
  STATIC FUNCTION ConvertObject(obj IN "<object_type>") RETURN AnyData,
  STATIC FUNCTION ConvertRef(rf IN REF "<object_type>") RETURN AnyData,
  STATIC FUNCTION ConvertCollection(col IN "<COLLECTION_1>") RETURN AnyData,
in the context of replicating SQL Server data in Oracle in real time?

Thank you.

 

by: igor_alphaPosted on 2007-02-11 at 21:35:21ID: 18513121

titumukherjee,
>>importrow
Do you mean DataTable.ImportRow method? It just copy rows from a table to another table without any converting. You need perform additional operations to convert one datatype to another.

>>How can I use
insert into xxx values(ANYDATA.ConvertNumber(15));
insert into xxx values(ANYDATA.ConvertVarchar2('text test text test'));

here is example how to get ANYDATA as varchar2:

SQL> CREATE OR REPLACE
  2    FUNCTION GetAnyData(
  3                        p_anydata   ANYDATA,
  4                        p_date_mask VARCHAR2
  5                       )
  6      RETURN VARCHAR2
  7      IS
  8          dummy  PLS_INTEGER;
  9          retval VARCHAR2(4000);
 10          dt     DATE;
 11      BEGIN
 12          CASE p_anydata.gettypeName
 13            WHEN 'SYS.NUMBER' THEN
 14              dummy := ANYDATA.GetNumber(p_anydata,retval);
 15            WHEN 'SYS.DATE' THEN
 16              dummy  := ANYDATA.GetDate(p_anydata,dt);
 17              retval := TO_CHAR(dt,p_date_mask);
 18            WHEN 'SYS.VARCHAR2' THEN
 19              dummy := ANYDATA.GetVarchar2(p_anydata,retval);
 20          END CASE;
 21          RETURN retval;
 22  END;
 23  /

 

by: bhushanvinayPosted on 2007-02-16 at 02:44:13ID: 18547321

Probably the solution by alpha is good enough and i think you need to take care of the date datatype.

see to that you are passing it in the right way and also look for any LOBS not to be sent.

20120131-EE-VQP-002

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