ABAP Select data from SAP table ESTVA 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 ESTVA 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 ESTVA. 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 ESTVA 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_ESTVA TYPE STANDARD TABLE OF ESTVA,
      WA_ESTVA TYPE ESTVA,
      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: <ESTVA> TYPE ESTVA.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ESTVA
*  INTO TABLE @DATA(IT_ESTVA2).
*--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_ESTVA INDEX 1 INTO DATA(WA_ESTVA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ESTVA>-MANDT = 1.
<ESTVA>-RECN = 1.
<ESTVA>-ACTN = 1.
<ESTVA>-VALFR = 1.
<ESTVA>-VALTO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ESTVA-AENNR, sy-vline,
  WA_ESTVA-DELFLG, sy-vline,
  WA_ESTVA-PARKFLG, sy-vline,
  WA_ESTVA-CRDAT, sy-vline,
  WA_ESTVA-CRNAM, sy-vline,
  WA_ESTVA-UPDDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ESTVA 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_ESTVA 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_ESTVA INTO WA_ESTVA.


*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 RECN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ESTVA-RECN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESTVA-RECN.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field RECNROOT_ORIG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ESTVA-RECNROOT_ORIG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESTVA-RECNROOT_ORIG.
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_ESTVA_STR, 
MANDT TYPE STRING,
RECN TYPE STRING,
ACTN TYPE STRING,
VALFR TYPE STRING,
VALTO TYPE STRING,
AENNR TYPE STRING,
DELFLG TYPE STRING,
PARKFLG TYPE STRING,
CRDAT TYPE STRING,
CRNAM TYPE STRING,
UPDDAT TYPE STRING,
UPDNAM TYPE STRING,
SRSID TYPE STRING,
OWNID TYPE STRING,
RECNROOT TYPE STRING,
RECNTVH TYPE STRING,
ORD TYPE STRING,
COMPREL TYPE STRING,
FLG_INHSRC TYPE STRING,
FLG_INHOVR TYPE STRING,
FLG_INHEXCL TYPE STRING,
RECN_TPLH TYPE STRING,
RECNTVA_SRC TYPE STRING,
RECNTVA_ORIG TYPE STRING,
RECNROOT_ORIG TYPE STRING,
TPL_ORD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ESTVA_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_ESTVA_STR-MANDT sy-vline 
WA_ESTVA_STR-RECN sy-vline 
WA_ESTVA_STR-ACTN sy-vline 
WA_ESTVA_STR-VALFR sy-vline 
WA_ESTVA_STR-VALTO sy-vline 
WA_ESTVA_STR-AENNR sy-vline 
WA_ESTVA_STR-DELFLG sy-vline 
WA_ESTVA_STR-PARKFLG sy-vline 
WA_ESTVA_STR-CRDAT sy-vline 
WA_ESTVA_STR-CRNAM sy-vline 
WA_ESTVA_STR-UPDDAT sy-vline 
WA_ESTVA_STR-UPDNAM sy-vline 
WA_ESTVA_STR-SRSID sy-vline 
WA_ESTVA_STR-OWNID sy-vline 
WA_ESTVA_STR-RECNROOT sy-vline 
WA_ESTVA_STR-RECNTVH sy-vline 
WA_ESTVA_STR-ORD sy-vline 
WA_ESTVA_STR-COMPREL sy-vline 
WA_ESTVA_STR-FLG_INHSRC sy-vline 
WA_ESTVA_STR-FLG_INHOVR sy-vline 
WA_ESTVA_STR-FLG_INHEXCL sy-vline 
WA_ESTVA_STR-RECN_TPLH sy-vline 
WA_ESTVA_STR-RECNTVA_SRC sy-vline 
WA_ESTVA_STR-RECNTVA_ORIG sy-vline 
WA_ESTVA_STR-RECNROOT_ORIG sy-vline 
WA_ESTVA_STR-TPL_ORD sy-vline      INTO ld_text SEPARATED BY SPACE.

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