ABAP Select data from SAP table EDOC_CL_MAPPING_TARGET into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EDOC_CL_MAPPING_TARGET
*  INTO TABLE @DATA(IT_EDOC_CL_MAPPING_TARGET2).
*--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_EDOC_CL_MAPPING_TARGET INDEX 1 INTO DATA(WA_EDOC_CL_MAPPING_TARGET2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EDOC_CL_MAPPING_TARGET>-SOURCE_HEADER = 1.
<EDOC_CL_MAPPING_TARGET>-LAND = 1.
<EDOC_CL_MAPPING_TARGET>-BUKRS = 1.
<EDOC_CL_MAPPING_TARGET>-SOURCE_TYPE = 1.
<EDOC_CL_MAPPING_TARGET>-SOURCE_KEY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EDOC_CL_MAPPING_TARGET-TAX_COUNTRY, sy-vline,
  WA_EDOC_CL_MAPPING_TARGET-REFERENCE, sy-vline,
  WA_EDOC_CL_MAPPING_TARGET-EDOC_GUID, sy-vline,
  WA_EDOC_CL_MAPPING_TARGET-DTE_RESPONSE, sy-vline,
  WA_EDOC_CL_MAPPING_TARGET-RESPONSE_DTE, sy-vline,
  WA_EDOC_CL_MAPPING_TARGET-SIGNED_DTE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EDOC_CL_MAPPING_TARGET 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_EDOC_CL_MAPPING_TARGET 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_EDOC_CL_MAPPING_TARGET INTO WA_EDOC_CL_MAPPING_TARGET.


*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_EDOC_CL_MAPPING_TARGET_STR, 
SOURCE_HEADER TYPE STRING,
LAND TYPE STRING,
BUKRS TYPE STRING,
SOURCE_TYPE TYPE STRING,
SOURCE_KEY TYPE STRING,
TAX_COUNTRY TYPE STRING,
REFERENCE TYPE STRING,
EDOC_GUID TYPE STRING,
DTE_RESPONSE TYPE STRING,
RESPONSE_DTE TYPE STRING,
SIGNED_DTE TYPE STRING,
DIGITAL_SEAL TYPE STRING,
BOLETA_RESPONSE TYPE STRING,
SIGNED_BOLETA TYPE STRING,
DIGITAL_SEAL_BOL TYPE STRING,
GET_STAUS_RESP TYPE STRING,
STATUS_CODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EDOC_CL_MAPPING_TARGET_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_EDOC_CL_MAPPING_TARGET_STR-SOURCE_HEADER sy-vline 
WA_EDOC_CL_MAPPING_TARGET_STR-LAND sy-vline 
WA_EDOC_CL_MAPPING_TARGET_STR-BUKRS sy-vline 
WA_EDOC_CL_MAPPING_TARGET_STR-SOURCE_TYPE sy-vline 
WA_EDOC_CL_MAPPING_TARGET_STR-SOURCE_KEY sy-vline 
WA_EDOC_CL_MAPPING_TARGET_STR-TAX_COUNTRY sy-vline 
WA_EDOC_CL_MAPPING_TARGET_STR-REFERENCE sy-vline 
WA_EDOC_CL_MAPPING_TARGET_STR-EDOC_GUID sy-vline 
WA_EDOC_CL_MAPPING_TARGET_STR-DTE_RESPONSE sy-vline 
WA_EDOC_CL_MAPPING_TARGET_STR-RESPONSE_DTE sy-vline 
WA_EDOC_CL_MAPPING_TARGET_STR-SIGNED_DTE sy-vline 
WA_EDOC_CL_MAPPING_TARGET_STR-DIGITAL_SEAL sy-vline 
WA_EDOC_CL_MAPPING_TARGET_STR-BOLETA_RESPONSE sy-vline 
WA_EDOC_CL_MAPPING_TARGET_STR-SIGNED_BOLETA sy-vline 
WA_EDOC_CL_MAPPING_TARGET_STR-DIGITAL_SEAL_BOL sy-vline 
WA_EDOC_CL_MAPPING_TARGET_STR-GET_STAUS_RESP sy-vline 
WA_EDOC_CL_MAPPING_TARGET_STR-STATUS_CODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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