MySQL combine two columns into one column

Question

I m trying to find a way to combine two columns into one  but keep getting the value  0  in the column instead to the combination of the words   These are what I ve tried as well as others   SELECT column1   column2 AS column3 FROM table   SELECT column1    column2 AS column3 FROM table   SELECT column1         column2 AS column3 FROM table    Could someone please let me know what I m doing wrong

User · Answer

table  ---------------------   column1   column2   ---------------------     abc       xyz     ---------------------  In Oracle  SELECT column1    column2 AS column3 FROM table name   Output  table  ---------------------   column3             ---------------------   abcxyz              ---------------------  If you want to put     or     or any string within two column data then you may use  SELECT column1           column2 AS column3 FROM table name   Output  table  ---------------------   column3             ---------------------   abc xyz             ---------------------

User · Answer

If you are Working On Oracle Then   SELECT column1    column2 AS column3 FROM table    OR  If You Are Working On MySql Then   SELECT Concat column1  column2  AS column3 FROM table

User · Answer

This is the only solution that would work for me  when I required a space in between the columns being merged   select concat concat column1       column2

User · Answer

Try this  it works for me  select  column1          column2  from table

User · Answer

For the MySQL fans out there  I like the IFNULL   function   Other answers here suggest similar functionality with the ISNULL   function in some implementations   In my situation  I have a column of descriptions which is NOT NULL  and a column of serial numbers which may be NULL This is how I combined them into one column   SELECT CONCAT description IFNULL   SN     serial number       FROM my table    My results suggest that the results of concatenating a string with NULL results in a NULL   I have been getting the alternative value in those cases

User · Answer

I have used this way and Its a best forever  In this code null also handled   SELECT Title  FirstName  lastName   ISNULL Title             ISNULL FirstName             ISNULL LastName     as FullName  FROM Customer   Try this

User · Answer

convert varchar  column name1     varchar  column name

User · Answer

SELECT Collumn1     -     Collumn2 AS  FullName  FROM TableName

User · Answer

My guess is that you are using MySQL where the   operator does addition  along with silent conversion of the values to numbers   If a value does not start with a digit  then the converted value is 0   So try this   select concat column1  column2    Two ways to add a space   select concat column1       column2  select concat ws      column1  column2

User · Answer

It s work for me   SELECT CONCAT column1       column2  AS newColumn

[mysql] MySQL combine two columns into one column

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