ABAP Select data from SAP table EAV4D into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP EAV4D 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 EAV4D. 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 EAV4D 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_EAV4D TYPE STANDARD TABLE OF EAV4D,
      WA_EAV4D TYPE EAV4D,
      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: <EAV4D> TYPE EAV4D.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_EAV4D.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM EAV4D
  INTO TABLE IT_EAV4D.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EAV4D
*  INTO TABLE @DATA(IT_EAV4D2).
*--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_EAV4D INDEX 1 INTO DATA(WA_EAV4D2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_EAV4D ASSIGNING <EAV4D>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EAV4D>-PROGRAMM = 1.
<EAV4D>-CONTCSNO = 1.
<EAV4D>-CONTROLNO = 1.
<EAV4D>-TEXT = 1.
<EAV4D>-NO_TEXT = 1.

ENDLOOP.

LOOP AT IT_EAV4D INTO WA_EAV4D.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EAV4D-IOPCSNO, sy-vline,
  WA_EAV4D-OOPCSNO, sy-vline,
  WA_EAV4D-EOPTYP, sy-vline,
  WA_EAV4D-AOPTYP, sy-vline,
  WA_EAV4D-BRELRZ, sy-vline,
  WA_EAV4D-DLTCSNO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EAV4D 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_EAV4D 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_EAV4D INTO WA_EAV4D.


*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_EAV4D_STR, 
PROGRAMM TYPE STRING,
CONTCSNO TYPE STRING,
CONTROLNO TYPE STRING,
TEXT TYPE STRING,
NO_TEXT TYPE STRING,
IOPCSNO TYPE STRING,
OOPCSNO TYPE STRING,
EOPTYP TYPE STRING,
AOPTYP TYPE STRING,
BRELRZ TYPE STRING,
DLTCSNO TYPE STRING,
BELZART TYPE STRING,
BELZTEXT TYPE STRING,
SCHEMZUL TYPE STRING,
PRORATE1 TYPE STRING,
PRORATE2 TYPE STRING,
PRODATE TYPE STRING,
STEXT TYPE STRING,
HEADER1 TYPE STRING,
HEADER2 TYPE STRING,
HEADER3 TYPE STRING,
HEADER4 TYPE STRING,
PRO1_TEMP TYPE STRING,
PRO2_TEMP TYPE STRING,
VARTYPE TYPE STRING,
OPTIONIND TYPE STRING,
SAME_MEAS TYPE STRING,
SAME_TEMP TYPE STRING,
TIME_REL TYPE STRING,
TIME_TEMP TYPE STRING,
NOTUSEEXTR TYPE STRING,
OUTPUTTYPE TYPE STRING,
ALLHISTORY TYPE STRING,
ALLHISTORY_TEMP TYPE STRING,
DISCON_RELEVANT TYPE STRING,
ARTMENGE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EAV4D_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_EAV4D_STR-PROGRAMM sy-vline 
WA_EAV4D_STR-CONTCSNO sy-vline 
WA_EAV4D_STR-CONTROLNO sy-vline 
WA_EAV4D_STR-TEXT sy-vline 
WA_EAV4D_STR-NO_TEXT sy-vline 
WA_EAV4D_STR-IOPCSNO sy-vline 
WA_EAV4D_STR-OOPCSNO sy-vline 
WA_EAV4D_STR-EOPTYP sy-vline 
WA_EAV4D_STR-AOPTYP sy-vline 
WA_EAV4D_STR-BRELRZ sy-vline 
WA_EAV4D_STR-DLTCSNO sy-vline 
WA_EAV4D_STR-BELZART sy-vline 
WA_EAV4D_STR-BELZTEXT sy-vline 
WA_EAV4D_STR-SCHEMZUL sy-vline 
WA_EAV4D_STR-PRORATE1 sy-vline 
WA_EAV4D_STR-PRORATE2 sy-vline 
WA_EAV4D_STR-PRODATE sy-vline 
WA_EAV4D_STR-STEXT sy-vline 
WA_EAV4D_STR-HEADER1 sy-vline 
WA_EAV4D_STR-HEADER2 sy-vline 
WA_EAV4D_STR-HEADER3 sy-vline 
WA_EAV4D_STR-HEADER4 sy-vline 
WA_EAV4D_STR-PRO1_TEMP sy-vline 
WA_EAV4D_STR-PRO2_TEMP sy-vline 
WA_EAV4D_STR-VARTYPE sy-vline 
WA_EAV4D_STR-OPTIONIND sy-vline 
WA_EAV4D_STR-SAME_MEAS sy-vline 
WA_EAV4D_STR-SAME_TEMP sy-vline 
WA_EAV4D_STR-TIME_REL sy-vline 
WA_EAV4D_STR-TIME_TEMP sy-vline 
WA_EAV4D_STR-NOTUSEEXTR sy-vline 
WA_EAV4D_STR-OUTPUTTYPE sy-vline 
WA_EAV4D_STR-ALLHISTORY sy-vline 
WA_EAV4D_STR-ALLHISTORY_TEMP sy-vline 
WA_EAV4D_STR-DISCON_RELEVANT sy-vline 
WA_EAV4D_STR-ARTMENGE sy-vline      INTO ld_text SEPARATED BY SPACE.

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