ABAP Select data from SAP table CPAYFRGENATT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CPAYFRGENATT table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to CPAYFRGENATT. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the CPAYFRGENATT table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_CPAYFRGENATT TYPE STANDARD TABLE OF CPAYFRGENATT,
      WA_CPAYFRGENATT TYPE CPAYFRGENATT,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <CPAYFRGENATT> TYPE CPAYFRGENATT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CPAYFRGENATT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CPAYFRGENATT
  INTO TABLE IT_CPAYFRGENATT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CPAYFRGENATT
*  INTO TABLE @DATA(IT_CPAYFRGENATT2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_CPAYFRGENATT INDEX 1 INTO DATA(WA_CPAYFRGENATT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CPAYFRGENATT ASSIGNING <CPAYFRGENATT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CPAYFRGENATT>-MANDT = 1.
<CPAYFRGENATT>-COMMUNICATIONDIRECTION = 1.
<CPAYFRGENATT>-HIERARCHYTREE = 1.
<CPAYFRGENATT>-HIERARCHYTREETYPE = 1.
<CPAYFRGENATT>-LASTCHANGEDATETIME = 1.

ENDLOOP.

LOOP AT IT_CPAYFRGENATT INTO WA_CPAYFRGENATT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CPAYFRGENATT-HIERARCHYTREEVERSION, sy-vline,
  WA_CPAYFRGENATT-HIERARCHYTREESHORTTEXT, sy-vline,
  WA_CPAYFRGENATT-STATUS, sy-vline,
  WA_CPAYFRGENATT-LASTCHANGEDATE, sy-vline,
  WA_CPAYFRGENATT-LASTCHANGEDBYUSER, sy-vline,
  WA_CPAYFRGENATT-HIERARCHYPARENTTREE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CPAYFRGENATT you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_CPAYFRGENATT TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_CPAYFRGENATT INTO WA_CPAYFRGENATT.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_CPAYFRGENATT_STR, 
MANDT TYPE STRING,
COMMUNICATIONDIRECTION TYPE STRING,
HIERARCHYTREE TYPE STRING,
HIERARCHYTREETYPE TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
HIERARCHYTREEVERSION TYPE STRING,
HIERARCHYTREESHORTTEXT TYPE STRING,
STATUS TYPE STRING,
LASTCHANGEDATE TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
HIERARCHYPARENTTREE TYPE STRING,
ISCUSTOMERFORMAT TYPE STRING,
HIERARCHYTREEISRELEASED TYPE STRING,
HIERARCHYTREEREDEFINITIONLEVEL TYPE STRING,
HIERARCHYNODEEXPANDSTATE TYPE STRING,
COMMDIRECTIONHIERARCHYTREE TYPE STRING,
COMMDIRECTIONHIERARCHYPARENT TYPE STRING,
HIERARCHYTREEDRAFTUUID TYPE STRING,
DRAFTLASTCHANGEDBYUSER TYPE STRING,
DRAFTLASTCHANGEDDATETIME TYPE STRING,
DRAFTINPROCESSBYUSER TYPE STRING,
HIERARCHYTREETYPESHORTTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CPAYFRGENATT_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_CPAYFRGENATT_STR-MANDT sy-vline 
WA_CPAYFRGENATT_STR-COMMUNICATIONDIRECTION sy-vline 
WA_CPAYFRGENATT_STR-HIERARCHYTREE sy-vline 
WA_CPAYFRGENATT_STR-HIERARCHYTREETYPE sy-vline 
WA_CPAYFRGENATT_STR-LASTCHANGEDATETIME sy-vline 
WA_CPAYFRGENATT_STR-HIERARCHYTREEVERSION sy-vline 
WA_CPAYFRGENATT_STR-HIERARCHYTREESHORTTEXT sy-vline 
WA_CPAYFRGENATT_STR-STATUS sy-vline 
WA_CPAYFRGENATT_STR-LASTCHANGEDATE sy-vline 
WA_CPAYFRGENATT_STR-LASTCHANGEDBYUSER sy-vline 
WA_CPAYFRGENATT_STR-HIERARCHYPARENTTREE sy-vline 
WA_CPAYFRGENATT_STR-ISCUSTOMERFORMAT sy-vline 
WA_CPAYFRGENATT_STR-HIERARCHYTREEISRELEASED sy-vline 
WA_CPAYFRGENATT_STR-HIERARCHYTREEREDEFINITIONLEVEL sy-vline 
WA_CPAYFRGENATT_STR-HIERARCHYNODEEXPANDSTATE sy-vline 
WA_CPAYFRGENATT_STR-COMMDIRECTIONHIERARCHYTREE sy-vline 
WA_CPAYFRGENATT_STR-COMMDIRECTIONHIERARCHYPARENT sy-vline 
WA_CPAYFRGENATT_STR-HIERARCHYTREEDRAFTUUID sy-vline 
WA_CPAYFRGENATT_STR-DRAFTLASTCHANGEDBYUSER sy-vline 
WA_CPAYFRGENATT_STR-DRAFTLASTCHANGEDDATETIME sy-vline 
WA_CPAYFRGENATT_STR-DRAFTINPROCESSBYUSER sy-vline 
WA_CPAYFRGENATT_STR-HIERARCHYTREETYPESHORTTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.