ABAP Select data from SAP table EMMA_BW_EXTRACT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EMMA_BW_EXTRACT
*  INTO TABLE @DATA(IT_EMMA_BW_EXTRACT2).
*--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_EMMA_BW_EXTRACT INDEX 1 INTO DATA(WA_EMMA_BW_EXTRACT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EMMA_BW_EXTRACT>-MSGID = 1.
<EMMA_BW_EXTRACT>-MSGNO = 1.
<EMMA_BW_EXTRACT>-BPGUID = 1.
<EMMA_BW_EXTRACT>-BPCODE = 1.
<EMMA_BW_EXTRACT>-TCODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EMMA_BW_EXTRACT-BATCH, sy-vline,
  WA_EMMA_BW_EXTRACT-SYST_TSTMP, sy-vline,
  WA_EMMA_BW_EXTRACT-USER_TZONE, sy-vline,
  WA_EMMA_BW_EXTRACT-NO_USER_MEAS, sy-vline,
  WA_EMMA_BW_EXTRACT-UNAME, sy-vline,
  WA_EMMA_BW_EXTRACT-PROC_DATE_CREATED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EMMA_BW_EXTRACT 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_EMMA_BW_EXTRACT 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_EMMA_BW_EXTRACT INTO WA_EMMA_BW_EXTRACT.


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

*Conversion exit ALPHA, internal->external for field CASENR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EMMA_BW_EXTRACT-CASENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EMMA_BW_EXTRACT-CASENR.
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_EMMA_BW_EXTRACT_STR, 
MSGID TYPE STRING,
MSGNO TYPE STRING,
BPGUID TYPE STRING,
BPCODE TYPE STRING,
TCODE TYPE STRING,
BATCH TYPE STRING,
SYST_TSTMP TYPE STRING,
USER_TZONE TYPE STRING,
NO_USER_MEAS TYPE STRING,
UNAME TYPE STRING,
PROC_DATE_CREATED TYPE STRING,
PROC_TIME_CREATED TYPE STRING,
MAIN_PROC TYPE STRING,
MAIN_BUSOBJ_TYPE TYPE STRING,
MAIN_BUSOBJ_ID TYPE STRING,
CASENR TYPE STRING,
CASE_GUID TYPE STRING,
ADD_BUSOBJ TYPE STRING,
BUSOBJ1 TYPE STRING,
REFOBJTYPE TYPE STRING,
REFSTRUCT TYPE STRING,
REFFIELD TYPE STRING,
ID TYPE STRING,
BUSOBJ2 TYPE STRING,
REFOBJTYPE TYPE STRING,
REFSTRUCT TYPE STRING,
REFFIELD TYPE STRING,
ID TYPE STRING,
BUSOBJ3 TYPE STRING,
REFOBJTYPE TYPE STRING,
REFSTRUCT TYPE STRING,
REFFIELD TYPE STRING,
ID TYPE STRING,
BUSOBJ4 TYPE STRING,
REFOBJTYPE TYPE STRING,
REFSTRUCT TYPE STRING,
REFFIELD TYPE STRING,
ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EMMA_BW_EXTRACT_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_EMMA_BW_EXTRACT_STR-MSGID sy-vline 
WA_EMMA_BW_EXTRACT_STR-MSGNO sy-vline 
WA_EMMA_BW_EXTRACT_STR-BPGUID sy-vline 
WA_EMMA_BW_EXTRACT_STR-BPCODE sy-vline 
WA_EMMA_BW_EXTRACT_STR-TCODE sy-vline 
WA_EMMA_BW_EXTRACT_STR-BATCH sy-vline 
WA_EMMA_BW_EXTRACT_STR-SYST_TSTMP sy-vline 
WA_EMMA_BW_EXTRACT_STR-USER_TZONE sy-vline 
WA_EMMA_BW_EXTRACT_STR-NO_USER_MEAS sy-vline 
WA_EMMA_BW_EXTRACT_STR-UNAME sy-vline 
WA_EMMA_BW_EXTRACT_STR-PROC_DATE_CREATED sy-vline 
WA_EMMA_BW_EXTRACT_STR-PROC_TIME_CREATED sy-vline 
WA_EMMA_BW_EXTRACT_STR-MAIN_PROC sy-vline 
WA_EMMA_BW_EXTRACT_STR-MAIN_BUSOBJ_TYPE sy-vline 
WA_EMMA_BW_EXTRACT_STR-MAIN_BUSOBJ_ID sy-vline 
WA_EMMA_BW_EXTRACT_STR-CASENR sy-vline 
WA_EMMA_BW_EXTRACT_STR-CASE_GUID sy-vline 
WA_EMMA_BW_EXTRACT_STR-ADD_BUSOBJ sy-vline 
WA_EMMA_BW_EXTRACT_STR-BUSOBJ1 sy-vline 
WA_EMMA_BW_EXTRACT_STR-REFOBJTYPE sy-vline 
WA_EMMA_BW_EXTRACT_STR-REFSTRUCT sy-vline 
WA_EMMA_BW_EXTRACT_STR-REFFIELD sy-vline 
WA_EMMA_BW_EXTRACT_STR-ID sy-vline 
WA_EMMA_BW_EXTRACT_STR-BUSOBJ2 sy-vline 
WA_EMMA_BW_EXTRACT_STR-REFOBJTYPE sy-vline 
WA_EMMA_BW_EXTRACT_STR-REFSTRUCT sy-vline 
WA_EMMA_BW_EXTRACT_STR-REFFIELD sy-vline 
WA_EMMA_BW_EXTRACT_STR-ID sy-vline 
WA_EMMA_BW_EXTRACT_STR-BUSOBJ3 sy-vline 
WA_EMMA_BW_EXTRACT_STR-REFOBJTYPE sy-vline 
WA_EMMA_BW_EXTRACT_STR-REFSTRUCT sy-vline 
WA_EMMA_BW_EXTRACT_STR-REFFIELD sy-vline 
WA_EMMA_BW_EXTRACT_STR-ID sy-vline 
WA_EMMA_BW_EXTRACT_STR-BUSOBJ4 sy-vline 
WA_EMMA_BW_EXTRACT_STR-REFOBJTYPE sy-vline 
WA_EMMA_BW_EXTRACT_STR-REFSTRUCT sy-vline 
WA_EMMA_BW_EXTRACT_STR-REFFIELD sy-vline 
WA_EMMA_BW_EXTRACT_STR-ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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