sql generate random number between 1 and 100

COPIED from:http://www.cnblogs.com/wuming/archive/2010/02/24/1672906.htmlFrom a table random 2 records, with select TOP * from Ywle ORDER by NEWID () the order by is generally sorted by a field, the return value of newid () is uniqueidentifier,

  Obtain two random records FROM table A and use select top 10 * FROM ywle order by newid ()Order by is generally sorted by a certain field. The return value of newid () is uniqueidentifier. How does order by newid () randomly select records?Newid ()

Execute in Query Analyzer: Select rand (), you can see that the result is similar to a random decimal: 0.36361513486289558, a decimal like this is used in the actual application is not much, generally to take random numbers will take random integers.

Random numbers from 10 to 20SELECT Dbms_random.value (10,20) from dual;0-2 of the time integersSELECT ABS (MOD (dbms_random. random,3)) from DUAL;Random integers of 0-99SELECT ABS (MOD (dbms_random. random,100)) from DUAL;1. Randomly take records

Randomly fetch 2 records from a table, using select TOP * from Ywle ORDER by NEWID ()Order by is generally sorted by a field, the return value of newid () is uniqueidentifier, and the Order by NEWID () random selection record is performedNEWID ()

How ORACLE produces a random number: Dbms_random--1, Decimals (0 ~ 1)Select Dbms_random.value from dual;--2, decimals within the specified range (0 ~ 100)Select Dbms_random.value (0,100) from dual;--3, integer within the specified range (0 ~

Http://blog.sina.com.cn/s/blog_6a01140c0100wimi.html1. Randomly take records from the tableSELECT * FROM (SELECT * from staff ORDER by Dbms_random.random)Where RowNum To randomly fetch 3 records from the staff table2. Generate Random NumbersSELECT

1. Randomly take records from the tableSELECT * FROM (SELECT * from the staff Order by Dbms_random.random) where RowNum To randomly fetch 3 records from the staff table2. Generate Random NumbersSELECT Dbms_random.          RANDOM from DUAL; produce

1. Randomly take records from the table SELECT * FROM (SELECT * from staff ORDER by Dbms_random.random)Where RowNum To randomly fetch 3 records from the staff table 2. Generate Random Numbers SELECT Dbms_random. RANDOM from DUAL;produce a random

Oracle Fetch random Number1. Randomly take records from the tableSELECT * FROM (SELECT * from the staff Order by Dbms_random.random) where RowNum To randomly fetch 3 records from the staff table2. Generate Random NumbersSELECT Dbms_random.