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  • sql - What is the equivalent of the Oracle Dual table in MS SqlServer . . .
    In SQL Server there is no dual table If you want to put a WHERE clause, you can simple put it directly like this: SELECT 123 WHERE 1<2 I think in MySQL and Oracle they need a FROM clause to use a WHERE clause SELECT 123 FROM DUAL WHERE 1<2
  • SQL SERVER – SELECT * FROM dual - SQL Authority with Pinal Dave
    You can check the content of the DUAL table using the following syntax SELECT * FROM dual It will return only one record with the value ‘X’ What is the reason for following error in SQL Server? Msg 208, Level 16, State 1, Line 1 Invalid object name ‘dual’
  • DUAL table in SQL - GeeksforGeeks
    1 Example SELECT * FROM DUAL; Output: X Selecting from the DUAL table is useful for computing constant expressions with the SELECT statement Because DUAL has only one row, the constant is returned only once 2 Example SELECT 'GeeksforGeeks' AS NAME FROM DUAL; Output: +-----+ | NAME | +-----+ | GeeksforGeeks | +-----+ 3 Example SELECT 2+2
  • Equivalent of DUAL table in Microsoft SQL Server
    This table was called DUAL and has a single VARCHAR2(1) column called DUMMY that has a value of ‘X’ To demonstrate the use of DUAL, the following displays the use of a SELECT statment that calculates 1+1 in TSQL and PL SQL: TSQL:
  • SQL Server 查詢DUAL虛擬表 select from dual table - Blogger
    SELECT 1 FROM DUAL; SELECT TO_DATE('20190918', 'YYYYMMDD') AS DAY FROM DUAL; SELECT TO_CHAR(SYSDATE, 'YY-MM-DD') AS DAY_CHAR FROM DUAL; 而Microsoft SQL Server並沒有如Oracle資料庫的Dual資料表，而是直接select，後面不用接from。 SELECT 1; SELECT CONVERT(varchar, GETDATE(), 100) AS DAY; 參考：
  • SQL: Converting to SQL Server - Where is the DUAL table?
    SELECT UPPER('Hello') AS Greeting FROM dual; When you’re converting code, ideally, you’d just remove all the “FROM dual” parts from the source code, but if that could cause any issues, or if the code is embedded in apps, etc it might be easier to just create the table that the code is looking for
  • Is there an equivalent of DUAL in SQL server? - Key Intelligence
    There is no equivalent of Dual in SQL Server This is because in SQL Server there is no need to select from a table like in Oracle For example Oracle: Select col1, col2 from dual SQL Server: Select Col1, Col2
  • Is it possible to have multiple rows with SELECT FROM DUAL?
    SELECT ('1,2, 4542, 342') FROM DUAL; '1,2, 4542, 342' will treated as a single string For your required output we can use UNION ALL operator Try the below query:-SELECT 1 FROM DUAL UNION ALL SELECT 2 FROM DUAL UNION ALL SELECT 4542 FROM DUAL UNION ALL SELECT 342 FROM DUAL;
  • SQL dual table - w3resource
    MySQL allows DUAL to be specified as a table in queries that do not need data from any tables In SQL Server DUAL table does not exist, but you could create one The DUAL table was created by Charles Weiss of Oracle corporation to provide a table for joining in internal views See the following commands :
  • dual in sql server – SQLServerCentral Forums
    CREATE TABLE [dbo] [dual]([dummy] [char](1) NOT NULL) ON [PRIMARY] SELECT * FROM dual dummy-----X (1 row(s) affected)





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