Find the number of columns in a table

Question

It is possible to find the number of rows in a table:

select count(*) from tablename

Is it possible to find the number of columns in a tabl

Answer 1

db2 'describe table "SCHEMA_NAME"."TBL_NAME"'

Answer 2

Using JDBC in Java:

    String quer="SELECT * FROM sample2 where 1=2";
    
    Statement st=con.createStatement();
    ResultSet rs=st.executeQuery(quer);
    ResultSetMetaData rsmd = rs.getMetaData();
    int NumOfCol=0;
    NumOfCol=rsmd.getColumnCount();
    System.out.println("Query Executed!! No of Colm="+NumOfCol);

Answer 3

It is possible to find the number of columns in a table just by using 3 simple lines of PHP code.

$sql="SELECT * FROM table";
$query=mysqli_query($connect_dude,$sql);    
$num=mysqli_num_fields($query);

$num would return the number of columns on a given table in this case.

Hopefully,it would help others.

Answer 4

SELECT COUNT(COLUMN_NAME) FROM INFORMATION_SCHEMA.COLUMNS WHERE 
TABLE_CATALOG = 'database_name' AND TABLE_SCHEMA = 'dbo'
AND TABLE_NAME = 'table_name'

Answer 5

SELECT COUNT(*)
  FROM INFORMATION_SCHEMA.COLUMNS
 WHERE table_catalog = 'database_name' -- the database
   AND table_name = 'table_name'

Answer 6

Its been little late but please take it from me...

In the editor(New Query) by select the database object it can be a table too, if we use the Shortcut Key Alt+F1 we will get all the information of the object and I think will solve your problem as well.