ABAP Select data from SAP table EERCH_SHORT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EERCH_SHORT
*  INTO TABLE @DATA(IT_EERCH_SHORT2).
*--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_EERCH_SHORT INDEX 1 INTO DATA(WA_EERCH_SHORT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EERCH_SHORT>-BELNR = 1.
<EERCH_SHORT>-BUKRS = 1.
<EERCH_SHORT>-SPARTE = 1.
<EERCH_SHORT>-GPARTNER = 1.
<EERCH_SHORT>-VKONT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EERCH_SHORT-VERTRAG, sy-vline,
  WA_EERCH_SHORT-BEGABRPE, sy-vline,
  WA_EERCH_SHORT-ENDABRPE, sy-vline,
  WA_EERCH_SHORT-STORNODAT, sy-vline,
  WA_EERCH_SHORT-ABRVORG, sy-vline,
  WA_EERCH_SHORT-HVORG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EERCH_SHORT 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_EERCH_SHORT 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_EERCH_SHORT INTO WA_EERCH_SHORT.


*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_EERCH_SHORT-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EERCH_SHORT-BELNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field EXBILLDOCNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EERCH_SHORT-EXBILLDOCNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EERCH_SHORT-EXBILLDOCNO.
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_EERCH_SHORT_STR, 
BELNR TYPE STRING,
BUKRS TYPE STRING,
SPARTE TYPE STRING,
GPARTNER TYPE STRING,
VKONT TYPE STRING,
VERTRAG TYPE STRING,
BEGABRPE TYPE STRING,
ENDABRPE TYPE STRING,
STORNODAT TYPE STRING,
ABRVORG TYPE STRING,
HVORG TYPE STRING,
KOFIZ TYPE STRING,
SIMULATION TYPE STRING,
BERGRUND TYPE STRING,
BEGNACH TYPE STRING,
TXJCD TYPE STRING,
KONZVER TYPE STRING,
ABRVORG2 TYPE STRING,
ERDAT TYPE STRING,
AEDAT TYPE STRING,
BEGRU TYPE STRING,
BACKBI TYPE STRING,
PERENDBI TYPE STRING,
BEGEND TYPE STRING,
ENDOFBB TYPE STRING,
ENDOFPEB TYPE STRING,
SC_BELNR_H TYPE STRING,
SC_BELNR_N TYPE STRING,
ZUORDDAA TYPE STRING,
BILLINGRUNNO TYPE STRING,
SIMRUNID TYPE STRING,
KTOKLASSE TYPE STRING,
ORIGDOC TYPE STRING,
MEM_OPBEL TYPE STRING,
MEM_BUDAT TYPE STRING,
EXBILLDOCNO TYPE STRING,
BCREASON TYPE STRING,
NINVOICE TYPE STRING,
DAUBUCH TYPE STRING,
BILLING_PERIOD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EERCH_SHORT_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_EERCH_SHORT_STR-BELNR sy-vline 
WA_EERCH_SHORT_STR-BUKRS sy-vline 
WA_EERCH_SHORT_STR-SPARTE sy-vline 
WA_EERCH_SHORT_STR-GPARTNER sy-vline 
WA_EERCH_SHORT_STR-VKONT sy-vline 
WA_EERCH_SHORT_STR-VERTRAG sy-vline 
WA_EERCH_SHORT_STR-BEGABRPE sy-vline 
WA_EERCH_SHORT_STR-ENDABRPE sy-vline 
WA_EERCH_SHORT_STR-STORNODAT sy-vline 
WA_EERCH_SHORT_STR-ABRVORG sy-vline 
WA_EERCH_SHORT_STR-HVORG sy-vline 
WA_EERCH_SHORT_STR-KOFIZ sy-vline 
WA_EERCH_SHORT_STR-SIMULATION sy-vline 
WA_EERCH_SHORT_STR-BERGRUND sy-vline 
WA_EERCH_SHORT_STR-BEGNACH sy-vline 
WA_EERCH_SHORT_STR-TXJCD sy-vline 
WA_EERCH_SHORT_STR-KONZVER sy-vline 
WA_EERCH_SHORT_STR-ABRVORG2 sy-vline 
WA_EERCH_SHORT_STR-ERDAT sy-vline 
WA_EERCH_SHORT_STR-AEDAT sy-vline 
WA_EERCH_SHORT_STR-BEGRU sy-vline 
WA_EERCH_SHORT_STR-BACKBI sy-vline 
WA_EERCH_SHORT_STR-PERENDBI sy-vline 
WA_EERCH_SHORT_STR-BEGEND sy-vline 
WA_EERCH_SHORT_STR-ENDOFBB sy-vline 
WA_EERCH_SHORT_STR-ENDOFPEB sy-vline 
WA_EERCH_SHORT_STR-SC_BELNR_H sy-vline 
WA_EERCH_SHORT_STR-SC_BELNR_N sy-vline 
WA_EERCH_SHORT_STR-ZUORDDAA sy-vline 
WA_EERCH_SHORT_STR-BILLINGRUNNO sy-vline 
WA_EERCH_SHORT_STR-SIMRUNID sy-vline 
WA_EERCH_SHORT_STR-KTOKLASSE sy-vline 
WA_EERCH_SHORT_STR-ORIGDOC sy-vline 
WA_EERCH_SHORT_STR-MEM_OPBEL sy-vline 
WA_EERCH_SHORT_STR-MEM_BUDAT sy-vline 
WA_EERCH_SHORT_STR-EXBILLDOCNO sy-vline 
WA_EERCH_SHORT_STR-BCREASON sy-vline 
WA_EERCH_SHORT_STR-NINVOICE sy-vline 
WA_EERCH_SHORT_STR-DAUBUCH sy-vline 
WA_EERCH_SHORT_STR-BILLING_PERIOD sy-vline      INTO ld_text SEPARATED BY SPACE.

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