ABAP Select data from SAP table EFFAV into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP EFFAV 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 EFFAV. 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 EFFAV 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_EFFAV TYPE STANDARD TABLE OF EFFAV,
      WA_EFFAV TYPE EFFAV,
      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: <EFFAV> TYPE EFFAV.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EFFAV
*  INTO TABLE @DATA(IT_EFFAV2).
*--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_EFFAV INDEX 1 INTO DATA(WA_EFFAV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EFFAV>-OPBEL = 1.
<EFFAV>-VERTRAG = 1.
<EFFAV>-FAEDN = 1.
<EFFAV>-V_ABSBETR = 1.
<EFFAV>-V_STEUER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EFFAV-O_VABSBETR, sy-vline,
  WA_EFFAV-O_VSTEUER, sy-vline,
  WA_EFFAV-ABSTOPDAT, sy-vline,
  WA_EFFAV-ABSPERDAT, sy-vline,
  WA_EFFAV-WAERS, sy-vline,
  WA_EFFAV-SPARTE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EFFAV 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_EFFAV 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_EFFAV INTO WA_EFFAV.


*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.

*Conversion exit ALPHA, internal->external for field OPBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EFFAV-OPBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EFFAV-OPBEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VERTRAG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EFFAV-VERTRAG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EFFAV-VERTRAG.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

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

TYPES: BEGIN OF T_EFFAV_STR, 
OPBEL TYPE STRING,
VERTRAG TYPE STRING,
FAEDN TYPE STRING,
V_ABSBETR TYPE STRING,
V_STEUER TYPE STRING,
O_VABSBETR TYPE STRING,
O_VSTEUER TYPE STRING,
ABSTOPDAT TYPE STRING,
ABSPERDAT TYPE STRING,
WAERS TYPE STRING,
SPARTE TYPE STRING,
XAESP TYPE STRING,
AENGR TYPE STRING,
STPRZ TYPE STRING,
OPUPW TYPE STRING,
OPUPK TYPE STRING,
OPUPZ TYPE STRING,
LOGNO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EFFAV_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_EFFAV_STR-OPBEL sy-vline 
WA_EFFAV_STR-VERTRAG sy-vline 
WA_EFFAV_STR-FAEDN sy-vline 
WA_EFFAV_STR-V_ABSBETR sy-vline 
WA_EFFAV_STR-V_STEUER sy-vline 
WA_EFFAV_STR-O_VABSBETR sy-vline 
WA_EFFAV_STR-O_VSTEUER sy-vline 
WA_EFFAV_STR-ABSTOPDAT sy-vline 
WA_EFFAV_STR-ABSPERDAT sy-vline 
WA_EFFAV_STR-WAERS sy-vline 
WA_EFFAV_STR-SPARTE sy-vline 
WA_EFFAV_STR-XAESP sy-vline 
WA_EFFAV_STR-AENGR sy-vline 
WA_EFFAV_STR-STPRZ sy-vline 
WA_EFFAV_STR-OPUPW sy-vline 
WA_EFFAV_STR-OPUPK sy-vline 
WA_EFFAV_STR-OPUPZ sy-vline 
WA_EFFAV_STR-LOGNO sy-vline      INTO ld_text SEPARATED BY SPACE.

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