ABAP Select data from SAP table GENCAS_BRF_IN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP GENCAS_BRF_IN 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 GENCAS_BRF_IN. 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 GENCAS_BRF_IN 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_GENCAS_BRF_IN TYPE STANDARD TABLE OF GENCAS_BRF_IN,
      WA_GENCAS_BRF_IN TYPE GENCAS_BRF_IN,
      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: <GENCAS_BRF_IN> TYPE GENCAS_BRF_IN.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GENCAS_BRF_IN
*  INTO TABLE @DATA(IT_GENCAS_BRF_IN2).
*--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_GENCAS_BRF_IN INDEX 1 INTO DATA(WA_GENCAS_BRF_IN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GENCAS_BRF_IN>-AMNL01 = 1.
<GENCAS_BRF_IN>-AMNL02 = 1.
<GENCAS_BRF_IN>-AMNL03 = 1.
<GENCAS_BRF_IN>-AMNL04 = 1.
<GENCAS_BRF_IN>-AMNL05 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GENCAS_BRF_IN-AMNL06, sy-vline,
  WA_GENCAS_BRF_IN-AMNL07, sy-vline,
  WA_GENCAS_BRF_IN-AMNL08, sy-vline,
  WA_GENCAS_BRF_IN-AMNL09, sy-vline,
  WA_GENCAS_BRF_IN-AMNL10, sy-vline,
  WA_GENCAS_BRF_IN-AMNL11, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GENCAS_BRF_IN 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_GENCAS_BRF_IN 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_GENCAS_BRF_IN INTO WA_GENCAS_BRF_IN.


*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_GENCAS_BRF_IN_STR, 
AMNL01 TYPE STRING,
AMNL02 TYPE STRING,
AMNL03 TYPE STRING,
AMNL04 TYPE STRING,
AMNL05 TYPE STRING,
AMNL06 TYPE STRING,
AMNL07 TYPE STRING,
AMNL08 TYPE STRING,
AMNL09 TYPE STRING,
AMNL10 TYPE STRING,
AMNL11 TYPE STRING,
AMNL12 TYPE STRING,
AMNL13 TYPE STRING,
AMNL14 TYPE STRING,
AMNL15 TYPE STRING,
AMNL16 TYPE STRING,
AMNL17 TYPE STRING,
AMNL18 TYPE STRING,
AMNL19 TYPE STRING,
AMNL20 TYPE STRING,
PERL01 TYPE STRING,
PERL02 TYPE STRING,
PERL03 TYPE STRING,
RTCUR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GENCAS_BRF_IN_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_GENCAS_BRF_IN_STR-AMNL01 sy-vline 
WA_GENCAS_BRF_IN_STR-AMNL02 sy-vline 
WA_GENCAS_BRF_IN_STR-AMNL03 sy-vline 
WA_GENCAS_BRF_IN_STR-AMNL04 sy-vline 
WA_GENCAS_BRF_IN_STR-AMNL05 sy-vline 
WA_GENCAS_BRF_IN_STR-AMNL06 sy-vline 
WA_GENCAS_BRF_IN_STR-AMNL07 sy-vline 
WA_GENCAS_BRF_IN_STR-AMNL08 sy-vline 
WA_GENCAS_BRF_IN_STR-AMNL09 sy-vline 
WA_GENCAS_BRF_IN_STR-AMNL10 sy-vline 
WA_GENCAS_BRF_IN_STR-AMNL11 sy-vline 
WA_GENCAS_BRF_IN_STR-AMNL12 sy-vline 
WA_GENCAS_BRF_IN_STR-AMNL13 sy-vline 
WA_GENCAS_BRF_IN_STR-AMNL14 sy-vline 
WA_GENCAS_BRF_IN_STR-AMNL15 sy-vline 
WA_GENCAS_BRF_IN_STR-AMNL16 sy-vline 
WA_GENCAS_BRF_IN_STR-AMNL17 sy-vline 
WA_GENCAS_BRF_IN_STR-AMNL18 sy-vline 
WA_GENCAS_BRF_IN_STR-AMNL19 sy-vline 
WA_GENCAS_BRF_IN_STR-AMNL20 sy-vline 
WA_GENCAS_BRF_IN_STR-PERL01 sy-vline 
WA_GENCAS_BRF_IN_STR-PERL02 sy-vline 
WA_GENCAS_BRF_IN_STR-PERL03 sy-vline 
WA_GENCAS_BRF_IN_STR-RTCUR sy-vline      INTO ld_text SEPARATED BY SPACE.

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