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datatypes question [message #353706] Tue, 14 October 2008 15:09 Go to next message
sant_new
Messages: 165
Registered: June 2008
Senior Member
Hi all, I work with both Oracle and SQl server databases. There is a similar table in both databases and we have number(15) datatype for a column in Oracle and bigint in SQL server.


In SQl server below are the details I found:
 Bigint holds data from -2^63 (-9,223,372,036,854,775,808) through 2^63-1 (9,223,372,036,854,775,807). 

 Smallint holds data from -2^15 (-32,768) through 2^15 - 1 (32,767). 

 Int holds data from -2^31 (-2,147,483,648) through 2^31 - 1 (2,147,483,647). 


In Oracle, I think number(38) datatype basically holds 38 digits. If anyone here know the equivalent of bigint,smallint and int in Oracle, please help me.

Thank you so much!
Re: datatypes question [message #353723 is a reply to message #353706] Tue, 14 October 2008 19:28 Go to previous message
andrew again
Messages: 2577
Registered: March 2000
Senior Member
This should be adequate reference
http://www.ss64.com/orasyntax/datatypes.html

else see
http://download.oracle.com/docs/cd/B28359_01/server.111/b28318/datatype.htm

CREATE TABLE num_test(
col1 INT,
col2 INTEGER,
col3 DECIMAL,
col4 FLOAT,
col5 NUMBER,
col6 NUMBER(38),
col7 NUMBER(20,6));

SQL> select TABLE_NAME, COLUMN_NAME, DATA_TYPE,
  2         DATA_LENGTH, DATA_PRECISION, DATA_SCALE
  3  from user_tab_columns where table_name = 'NUM_TEST';

TABLE_NAME COLUMN DATA_TYPE  DATA_LENGTH DATA_PRECISION DATA_SCALE
---------- ------ ---------- ----------- -------------- ----------
NUM_TEST   COL1   NUMBER              22                         0
NUM_TEST   COL2   NUMBER              22                         0
NUM_TEST   COL3   NUMBER              22                         0
NUM_TEST   COL4   FLOAT               22            126
NUM_TEST   COL5   NUMBER              22
NUM_TEST   COL6   NUMBER              22             38          0
NUM_TEST   COL7   NUMBER              22             20          6

7 rows selected.

SQL>

[Updated on: Tue, 14 October 2008 19:41]

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