ABAP Select data from SAP table ESH_BSEG_H_S into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ESH_BSEG_H_S
*  INTO TABLE @DATA(IT_ESH_BSEG_H_S2).
*--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_ESH_BSEG_H_S INDEX 1 INTO DATA(WA_ESH_BSEG_H_S2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ESH_BSEG_H_S>-BUKRS = 1.
<ESH_BSEG_H_S>-BELNR = 1.
<ESH_BSEG_H_S>-GJAHR = 1.
<ESH_BSEG_H_S>-BUZEI = 1.
<ESH_BSEG_H_S>-KOART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ESH_BSEG_H_S-SGTXT, sy-vline,
  WA_ESH_BSEG_H_S-WRBTR, sy-vline,
  WA_ESH_BSEG_H_S-XREF1, sy-vline,
  WA_ESH_BSEG_H_S-XREF2, sy-vline,
  WA_ESH_BSEG_H_S-XREF3, sy-vline,
  WA_ESH_BSEG_H_S-VBUND, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ESH_BSEG_H_S 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_ESH_BSEG_H_S 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_ESH_BSEG_H_S INTO WA_ESH_BSEG_H_S.


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

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ESH_BSEG_H_S-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESH_BSEG_H_S-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field WRBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_ESH_BSEG_H_S-WRBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESH_BSEG_H_S-WRBTR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field ANLN1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ESH_BSEG_H_S-ANLN1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESH_BSEG_H_S-ANLN1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANLN2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ESH_BSEG_H_S-ANLN2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESH_BSEG_H_S-ANLN2.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field VBEL2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ESH_BSEG_H_S-VBEL2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESH_BSEG_H_S-VBEL2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PROJK
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_ESH_BSEG_H_S-PROJK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESH_BSEG_H_S-PROJK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ESH_BSEG_H_S-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESH_BSEG_H_S-VBELN.
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_ESH_BSEG_H_S_STR, 
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
KOART TYPE STRING,
SGTXT TYPE STRING,
WRBTR TYPE STRING,
XREF1 TYPE STRING,
XREF2 TYPE STRING,
XREF3 TYPE STRING,
VBUND TYPE STRING,
HKONT TYPE STRING,
ZUONR TYPE STRING,
PRCTR TYPE STRING,
KOKRS TYPE STRING,
KOSTL TYPE STRING,
AUFNR TYPE STRING,
ANLN1 TYPE STRING,
ANLN2 TYPE STRING,
KUNNR TYPE STRING,
LIFNR TYPE STRING,
EBELN TYPE STRING,
VBEL2 TYPE STRING,
GSBER TYPE STRING,
FKBER TYPE STRING,
PROJK TYPE STRING,
VBELN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ESH_BSEG_H_S_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_ESH_BSEG_H_S_STR-BUKRS sy-vline 
WA_ESH_BSEG_H_S_STR-BELNR sy-vline 
WA_ESH_BSEG_H_S_STR-GJAHR sy-vline 
WA_ESH_BSEG_H_S_STR-BUZEI sy-vline 
WA_ESH_BSEG_H_S_STR-KOART sy-vline 
WA_ESH_BSEG_H_S_STR-SGTXT sy-vline 
WA_ESH_BSEG_H_S_STR-WRBTR sy-vline 
WA_ESH_BSEG_H_S_STR-XREF1 sy-vline 
WA_ESH_BSEG_H_S_STR-XREF2 sy-vline 
WA_ESH_BSEG_H_S_STR-XREF3 sy-vline 
WA_ESH_BSEG_H_S_STR-VBUND sy-vline 
WA_ESH_BSEG_H_S_STR-HKONT sy-vline 
WA_ESH_BSEG_H_S_STR-ZUONR sy-vline 
WA_ESH_BSEG_H_S_STR-PRCTR sy-vline 
WA_ESH_BSEG_H_S_STR-KOKRS sy-vline 
WA_ESH_BSEG_H_S_STR-KOSTL sy-vline 
WA_ESH_BSEG_H_S_STR-AUFNR sy-vline 
WA_ESH_BSEG_H_S_STR-ANLN1 sy-vline 
WA_ESH_BSEG_H_S_STR-ANLN2 sy-vline 
WA_ESH_BSEG_H_S_STR-KUNNR sy-vline 
WA_ESH_BSEG_H_S_STR-LIFNR sy-vline 
WA_ESH_BSEG_H_S_STR-EBELN sy-vline 
WA_ESH_BSEG_H_S_STR-VBEL2 sy-vline 
WA_ESH_BSEG_H_S_STR-GSBER sy-vline 
WA_ESH_BSEG_H_S_STR-FKBER sy-vline 
WA_ESH_BSEG_H_S_STR-PROJK sy-vline 
WA_ESH_BSEG_H_S_STR-VBELN sy-vline      INTO ld_text SEPARATED BY SPACE.

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