ABAP Select data from SAP table EDOC_TW_SUMMARY_ALV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP EDOC_TW_SUMMARY_ALV 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_TW_SUMMARY_ALV. 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_TW_SUMMARY_ALV 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_TW_SUMMARY_ALV TYPE STANDARD TABLE OF EDOC_TW_SUMMARY_ALV,
      WA_EDOC_TW_SUMMARY_ALV TYPE EDOC_TW_SUMMARY_ALV,
      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_TW_SUMMARY_ALV> TYPE EDOC_TW_SUMMARY_ALV.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EDOC_TW_SUMMARY_ALV
*  INTO TABLE @DATA(IT_EDOC_TW_SUMMARY_ALV2).
*--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_TW_SUMMARY_ALV INDEX 1 INTO DATA(WA_EDOC_TW_SUMMARY_ALV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EDOC_TW_SUMMARY_ALV>-MANDT = 1.
<EDOC_TW_SUMMARY_ALV>-EDOC_GUID = 1.
<EDOC_TW_SUMMARY_ALV>-SEQ_NO = 1.
<EDOC_TW_SUMMARY_ALV>-BUKRS = 1.
<EDOC_TW_SUMMARY_ALV>-LAND = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EDOC_TW_SUMMARY_ALV-SOURCE_TYPE, sy-vline,
  WA_EDOC_TW_SUMMARY_ALV-SOURCE_KEY, sy-vline,
  WA_EDOC_TW_SUMMARY_ALV-EDOC_TYPE, sy-vline,
  WA_EDOC_TW_SUMMARY_ALV-PROC_STATUS, sy-vline,
  WA_EDOC_TW_SUMMARY_ALV-LOGSYS, sy-vline,
  WA_EDOC_TW_SUMMARY_ALV-CHANGED_BY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EDOC_TW_SUMMARY_ALV 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_TW_SUMMARY_ALV 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_TW_SUMMARY_ALV INTO WA_EDOC_TW_SUMMARY_ALV.


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

*Conversion exit AU132, internal->external for field TOTAL_AMOUNT
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_EDOC_TW_SUMMARY_ALV-TOTAL_AMOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EDOC_TW_SUMMARY_ALV-TOTAL_AMOUNT.
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_EDOC_TW_SUMMARY_ALV_STR, 
MANDT TYPE STRING,
EDOC_GUID TYPE STRING,
SEQ_NO TYPE STRING,
BUKRS TYPE STRING,
LAND TYPE STRING,
SOURCE_TYPE TYPE STRING,
SOURCE_KEY TYPE STRING,
EDOC_TYPE TYPE STRING,
PROC_STATUS TYPE STRING,
LOGSYS TYPE STRING,
CHANGED_BY TYPE STRING,
CHANGE_DATE TYPE STRING,
CHANGE_TIME TYPE STRING,
CREATED_BY TYPE STRING,
CREATE_DATE TYPE STRING,
CREATE_TIME TYPE STRING,
PROCESS TYPE STRING,
LAST_PROCSTEP TYPE STRING,
LAST_PROCSTEP_VARIANT TYPE STRING,
ERROR_FLAG TYPE STRING,
PROCESS_VERSION TYPE STRING,
DOCREF_SEQNR TYPE STRING,
STATUS TYPE STRING,
POSTING_DATE TYPE STRING,
CONTINGENCY TYPE STRING,
METASTATUS TYPE STRING,
REF_PROCESS TYPE STRING,
EDOCUMENT_CLASS TYPE STRING,
ARCHIVE_PREP TYPE STRING,
INTERFACE_TYPE TYPE STRING,
APPROVAL_ID TYPE STRING,
INTERFACE_GUID TYPE STRING,
FILE_GUID TYPE STRING,
RESPONSE_CODE TYPE STRING,
INTERFACE_ID TYPE STRING,
INT_VERSION TYPE STRING,
COUNT_ARCHIVE TYPE STRING,
LIST_GUID TYPE STRING,
MESSAGE TYPE STRING,
SCOL TYPE STRING,
TOTAL_AMOUNT TYPE STRING,
WAERS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EDOC_TW_SUMMARY_ALV_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_TW_SUMMARY_ALV_STR-MANDT sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-EDOC_GUID sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-SEQ_NO sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-BUKRS sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-LAND sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-SOURCE_TYPE sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-SOURCE_KEY sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-EDOC_TYPE sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-PROC_STATUS sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-LOGSYS sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-CHANGED_BY sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-CHANGE_DATE sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-CHANGE_TIME sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-CREATED_BY sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-CREATE_DATE sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-CREATE_TIME sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-PROCESS sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-LAST_PROCSTEP sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-LAST_PROCSTEP_VARIANT sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-ERROR_FLAG sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-PROCESS_VERSION sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-DOCREF_SEQNR sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-STATUS sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-POSTING_DATE sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-CONTINGENCY sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-METASTATUS sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-REF_PROCESS sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-EDOCUMENT_CLASS sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-ARCHIVE_PREP sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-INTERFACE_TYPE sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-APPROVAL_ID sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-INTERFACE_GUID sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-FILE_GUID sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-RESPONSE_CODE sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-INTERFACE_ID sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-INT_VERSION sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-COUNT_ARCHIVE sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-LIST_GUID sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-MESSAGE sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-SCOL sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-TOTAL_AMOUNT sy-vline 
WA_EDOC_TW_SUMMARY_ALV_STR-WAERS sy-vline      INTO ld_text SEPARATED BY SPACE.

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