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-->Requirement :

Sometimes, in a program ,certain set of statements need to be processed conditionally.

For instance,

->at the start of the internal table (at first)

->at the end of the internal table (at end, at last).

->when a field value of internal table changes. In order to format & display the Internal Table data according to the above requirement we use

Control Level Statements , that helps in reducing the lines of code. Also the Internal Table is to be 'Sorted' before using the Control Level Statements. 

Following are the Control Level Statements.

  1. AT FIRST......ENDAT
  2. AT LAST......ENDAT
  3. AT NEW <COL>......ENDAT
  4. AT END OF <COL>......ENDAT  
    AT FIRST:            To display the required data at the beginning of the internal table.

 

The output is displayed as follows.

  1.  
    AT  LAST:

                        To display the required data as LAST line of the internal table.

  --> The output is displayed as follows.


AT  NEW.*If a group of lines of a particular column have same value, it can be displayed at the beginning only once using the control level statement

At New <column name>.

The columns to the left of <column name> are also considered by the 'At New' condition. 

Say internal table contents are as follows:

Carrid              connid

AA                  0017                385                  349

AA                  0017                386                  432

AB                   0017                345                 254

AB                  0016                243                  423 

"At New Connid."    Works as follows:

 Carrid              connid

   AA                  0017              

                                               385                  349

                                               386                 432

   AB                   0017             345                 254

   AB                   0016             243                  423  

Ex:

           
 

-->The output is displayed as follows:
 
 

 
 

Ex2: 

The columns to the right of the specified column appear as ****** when specified inside the

At New ...Endat loop.

-->The output is displayed as follows: 
 

 
 
AT END OF: If a group of lines of a particular column have same value, it can be displayed at the End of the group only  

  once using the control level statement   At End of  <column name>.

The columns to the left of <column name> are also considered by the 'At End Of ' condition.  

Ex:




The output is displayed as follows: