ABAP Select data from SAP table ESSR_REL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ESSR_REL
*  INTO TABLE @DATA(IT_ESSR_REL2).
*--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_ESSR_REL INDEX 1 INTO DATA(WA_ESSR_REL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ESSR_REL>-MANDT = 1.
<ESSR_REL>-EBELN = 1.
<ESSR_REL>-EBELP = 1.
<ESSR_REL>-LBLNI = 1.
<ESSR_REL>-BUKRS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ESSR_REL-BSART, sy-vline,
  WA_ESSR_REL-LOEKZ_H, sy-vline,
  WA_ESSR_REL-ERNAM_H, sy-vline,
  WA_ESSR_REL-SPRAS, sy-vline,
  WA_ESSR_REL-LIFNR, sy-vline,
  WA_ESSR_REL-EKORG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ESSR_REL 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_ESSR_REL 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_ESSR_REL INTO WA_ESSR_REL.


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

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

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_ESSR_REL-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESSR_REL-SPRAS.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ESSR_REL-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESSR_REL-MEINS.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field SPEC_NO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ESSR_REL-SPEC_NO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESSR_REL-SPEC_NO.
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_ESSR_REL_STR, 
MANDT TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
LBLNI TYPE STRING,
BUKRS TYPE STRING,
BSART TYPE STRING,
LOEKZ_H TYPE STRING,
ERNAM_H TYPE STRING,
SPRAS TYPE STRING,
LIFNR TYPE STRING,
EKORG TYPE STRING,
EKGRP TYPE STRING,
WAERS_H TYPE STRING,
BEDAT TYPE STRING,
VERKF TYPE STRING,
KTWRT TYPE STRING,
FRGRL_H TYPE STRING,
LOEKZ_P TYPE STRING,
TXZ01_P TYPE STRING,
WERKS TYPE STRING,
MATKL TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
NETWR_P TYPE STRING,
BRTWR TYPE STRING,
NAVNW TYPE STRING,
ELIKZ TYPE STRING,
EREKZ TYPE STRING,
PSTYP TYPE STRING,
KNTTP TYPE STRING,
PACKNO_P TYPE STRING,
XERSY TYPE STRING,
BANFN TYPE STRING,
BNFPO TYPE STRING,
KONNR TYPE STRING,
KTPNR TYPE STRING,
LBLNE TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
SBNAMAG TYPE STRING,
SBNAMAN TYPE STRING,
DLORT TYPE STRING,
LBLDT TYPE STRING,
LZVON TYPE STRING,
LZBIS TYPE STRING,
LWERT TYPE STRING,
UWERT TYPE STRING,
NETWR TYPE STRING,
UNPLV TYPE STRING,
WAERS TYPE STRING,
PACKNO TYPE STRING,
TXZ01 TYPE STRING,
LOEKZ TYPE STRING,
KZABN TYPE STRING,
FINAL TYPE STRING,
FRGGR TYPE STRING,
FRGSX TYPE STRING,
FRGKL TYPE STRING,
FRGZU TYPE STRING,
FRGRL TYPE STRING,
F_LOCK TYPE STRING,
PWWE TYPE STRING,
PWFR TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
XBLNR TYPE STRING,
BKTXT TYPE STRING,
KNTTP_ES TYPE STRING,
KZVBR_ES TYPE STRING,
BANFN_SH TYPE STRING,
BNFPO_SH TYPE STRING,
WARPL TYPE STRING,
WAPOS TYPE STRING,
ABNUM TYPE STRING,
FKNUM TYPE STRING,
FKPOS TYPE STRING,
USER1 TYPE STRING,
USER2 TYPE STRING,
NAVNW_ES TYPE STRING,
SPEC_NO TYPE STRING,
CUOBJ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ESSR_REL_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_ESSR_REL_STR-MANDT sy-vline 
WA_ESSR_REL_STR-EBELN sy-vline 
WA_ESSR_REL_STR-EBELP sy-vline 
WA_ESSR_REL_STR-LBLNI sy-vline 
WA_ESSR_REL_STR-BUKRS sy-vline 
WA_ESSR_REL_STR-BSART sy-vline 
WA_ESSR_REL_STR-LOEKZ_H sy-vline 
WA_ESSR_REL_STR-ERNAM_H sy-vline 
WA_ESSR_REL_STR-SPRAS sy-vline 
WA_ESSR_REL_STR-LIFNR sy-vline 
WA_ESSR_REL_STR-EKORG sy-vline 
WA_ESSR_REL_STR-EKGRP sy-vline 
WA_ESSR_REL_STR-WAERS_H sy-vline 
WA_ESSR_REL_STR-BEDAT sy-vline 
WA_ESSR_REL_STR-VERKF sy-vline 
WA_ESSR_REL_STR-KTWRT sy-vline 
WA_ESSR_REL_STR-FRGRL_H sy-vline 
WA_ESSR_REL_STR-LOEKZ_P sy-vline 
WA_ESSR_REL_STR-TXZ01_P sy-vline 
WA_ESSR_REL_STR-WERKS sy-vline 
WA_ESSR_REL_STR-MATKL sy-vline 
WA_ESSR_REL_STR-MENGE sy-vline 
WA_ESSR_REL_STR-MEINS sy-vline 
WA_ESSR_REL_STR-NETWR_P sy-vline 
WA_ESSR_REL_STR-BRTWR sy-vline 
WA_ESSR_REL_STR-NAVNW sy-vline 
WA_ESSR_REL_STR-ELIKZ sy-vline 
WA_ESSR_REL_STR-EREKZ sy-vline 
WA_ESSR_REL_STR-PSTYP sy-vline 
WA_ESSR_REL_STR-KNTTP sy-vline 
WA_ESSR_REL_STR-PACKNO_P sy-vline 
WA_ESSR_REL_STR-XERSY sy-vline 
WA_ESSR_REL_STR-BANFN sy-vline 
WA_ESSR_REL_STR-BNFPO sy-vline 
WA_ESSR_REL_STR-KONNR sy-vline 
WA_ESSR_REL_STR-KTPNR sy-vline 
WA_ESSR_REL_STR-LBLNE sy-vline 
WA_ESSR_REL_STR-ERNAM sy-vline 
WA_ESSR_REL_STR-ERDAT sy-vline 
WA_ESSR_REL_STR-AEDAT sy-vline 
WA_ESSR_REL_STR-AENAM sy-vline 
WA_ESSR_REL_STR-SBNAMAG sy-vline 
WA_ESSR_REL_STR-SBNAMAN sy-vline 
WA_ESSR_REL_STR-DLORT sy-vline 
WA_ESSR_REL_STR-LBLDT sy-vline 
WA_ESSR_REL_STR-LZVON sy-vline 
WA_ESSR_REL_STR-LZBIS sy-vline 
WA_ESSR_REL_STR-LWERT sy-vline 
WA_ESSR_REL_STR-UWERT sy-vline 
WA_ESSR_REL_STR-NETWR sy-vline 
WA_ESSR_REL_STR-UNPLV sy-vline 
WA_ESSR_REL_STR-WAERS sy-vline 
WA_ESSR_REL_STR-PACKNO sy-vline 
WA_ESSR_REL_STR-TXZ01 sy-vline 
WA_ESSR_REL_STR-LOEKZ sy-vline 
WA_ESSR_REL_STR-KZABN sy-vline 
WA_ESSR_REL_STR-FINAL sy-vline 
WA_ESSR_REL_STR-FRGGR sy-vline 
WA_ESSR_REL_STR-FRGSX sy-vline 
WA_ESSR_REL_STR-FRGKL sy-vline 
WA_ESSR_REL_STR-FRGZU sy-vline 
WA_ESSR_REL_STR-FRGRL sy-vline 
WA_ESSR_REL_STR-F_LOCK sy-vline 
WA_ESSR_REL_STR-PWWE sy-vline 
WA_ESSR_REL_STR-PWFR sy-vline 
WA_ESSR_REL_STR-BLDAT sy-vline 
WA_ESSR_REL_STR-BUDAT sy-vline 
WA_ESSR_REL_STR-XBLNR sy-vline 
WA_ESSR_REL_STR-BKTXT sy-vline 
WA_ESSR_REL_STR-KNTTP_ES sy-vline 
WA_ESSR_REL_STR-KZVBR_ES sy-vline 
WA_ESSR_REL_STR-BANFN_SH sy-vline 
WA_ESSR_REL_STR-BNFPO_SH sy-vline 
WA_ESSR_REL_STR-WARPL sy-vline 
WA_ESSR_REL_STR-WAPOS sy-vline 
WA_ESSR_REL_STR-ABNUM sy-vline 
WA_ESSR_REL_STR-FKNUM sy-vline 
WA_ESSR_REL_STR-FKPOS sy-vline 
WA_ESSR_REL_STR-USER1 sy-vline 
WA_ESSR_REL_STR-USER2 sy-vline 
WA_ESSR_REL_STR-NAVNW_ES sy-vline 
WA_ESSR_REL_STR-SPEC_NO sy-vline 
WA_ESSR_REL_STR-CUOBJ sy-vline      INTO ld_text SEPARATED BY SPACE.

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