ABAP Select data from SAP table EMMA_MIGWKBNCH_ALV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP EMMA_MIGWKBNCH_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 EMMA_MIGWKBNCH_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 EMMA_MIGWKBNCH_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_EMMA_MIGWKBNCH_ALV TYPE STANDARD TABLE OF EMMA_MIGWKBNCH_ALV,
      WA_EMMA_MIGWKBNCH_ALV TYPE EMMA_MIGWKBNCH_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: <EMMA_MIGWKBNCH_ALV> TYPE EMMA_MIGWKBNCH_ALV.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EMMA_MIGWKBNCH_ALV
*  INTO TABLE @DATA(IT_EMMA_MIGWKBNCH_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_EMMA_MIGWKBNCH_ALV INDEX 1 INTO DATA(WA_EMMA_MIGWKBNCH_ALV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EMMA_MIGWKBNCH_ALV>-BOX = 1.
<EMMA_MIGWKBNCH_ALV>-S_NAME = 1.
<EMMA_MIGWKBNCH_ALV>-S_DATE = 1.
<EMMA_MIGWKBNCH_ALV>-S_TIME = 1.
<EMMA_MIGWKBNCH_ALV>-S_ID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EMMA_MIGWKBNCH_ALV-KNZ_BTC, sy-vline,
  WA_EMMA_MIGWKBNCH_ALV-FIRMA, sy-vline,
  WA_EMMA_MIGWKBNCH_ALV-OBJECT, sy-vline,
  WA_EMMA_MIGWKBNCH_ALV-FILE, sy-vline,
  WA_EMMA_MIGWKBNCH_ALV-OLDKEY, sy-vline,
  WA_EMMA_MIGWKBNCH_ALV-CNT_GOOD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EMMA_MIGWKBNCH_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_EMMA_MIGWKBNCH_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_EMMA_MIGWKBNCH_ALV INTO WA_EMMA_MIGWKBNCH_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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_EMMA_MIGWKBNCH_ALV_STR, 
BOX TYPE STRING,
S_NAME TYPE STRING,
S_DATE TYPE STRING,
S_TIME TYPE STRING,
S_ID TYPE STRING,
KNZ_BTC TYPE STRING,
FIRMA TYPE STRING,
OBJECT TYPE STRING,
FILE TYPE STRING,
OLDKEY TYPE STRING,
CNT_GOOD TYPE STRING,
CNT_BAD TYPE STRING,
ERABS TYPE STRING,
ERREL TYPE STRING,
STATUS TYPE STRING,
DATUM TYPE STRING,
UZEIT TYPE STRING,
MANDT TYPE STRING,
JOBNAME TYPE STRING,
JOBCOUNT TYPE STRING,
CNT_RERUN TYPE STRING,
RESTART TYPE STRING,
THROUGHPUT TYPE STRING,
P_DATE TYPE STRING,
P_TIME TYPE STRING,
P_ID TYPE STRING,
FUNCTION_IMP TYPE STRING,
MASSRUN_IMP TYPE STRING,
RUNID TYPE STRING,
CNT_RESTART TYPE STRING,
EXECSERVER TYPE STRING,
WP_NO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EMMA_MIGWKBNCH_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_EMMA_MIGWKBNCH_ALV_STR-BOX sy-vline 
WA_EMMA_MIGWKBNCH_ALV_STR-S_NAME sy-vline 
WA_EMMA_MIGWKBNCH_ALV_STR-S_DATE sy-vline 
WA_EMMA_MIGWKBNCH_ALV_STR-S_TIME sy-vline 
WA_EMMA_MIGWKBNCH_ALV_STR-S_ID sy-vline 
WA_EMMA_MIGWKBNCH_ALV_STR-KNZ_BTC sy-vline 
WA_EMMA_MIGWKBNCH_ALV_STR-FIRMA sy-vline 
WA_EMMA_MIGWKBNCH_ALV_STR-OBJECT sy-vline 
WA_EMMA_MIGWKBNCH_ALV_STR-FILE sy-vline 
WA_EMMA_MIGWKBNCH_ALV_STR-OLDKEY sy-vline 
WA_EMMA_MIGWKBNCH_ALV_STR-CNT_GOOD sy-vline 
WA_EMMA_MIGWKBNCH_ALV_STR-CNT_BAD sy-vline 
WA_EMMA_MIGWKBNCH_ALV_STR-ERABS sy-vline 
WA_EMMA_MIGWKBNCH_ALV_STR-ERREL sy-vline 
WA_EMMA_MIGWKBNCH_ALV_STR-STATUS sy-vline 
WA_EMMA_MIGWKBNCH_ALV_STR-DATUM sy-vline 
WA_EMMA_MIGWKBNCH_ALV_STR-UZEIT sy-vline 
WA_EMMA_MIGWKBNCH_ALV_STR-MANDT sy-vline 
WA_EMMA_MIGWKBNCH_ALV_STR-JOBNAME sy-vline 
WA_EMMA_MIGWKBNCH_ALV_STR-JOBCOUNT sy-vline 
WA_EMMA_MIGWKBNCH_ALV_STR-CNT_RERUN sy-vline 
WA_EMMA_MIGWKBNCH_ALV_STR-RESTART sy-vline 
WA_EMMA_MIGWKBNCH_ALV_STR-THROUGHPUT sy-vline 
WA_EMMA_MIGWKBNCH_ALV_STR-P_DATE sy-vline 
WA_EMMA_MIGWKBNCH_ALV_STR-P_TIME sy-vline 
WA_EMMA_MIGWKBNCH_ALV_STR-P_ID sy-vline 
WA_EMMA_MIGWKBNCH_ALV_STR-FUNCTION_IMP sy-vline 
WA_EMMA_MIGWKBNCH_ALV_STR-MASSRUN_IMP sy-vline 
WA_EMMA_MIGWKBNCH_ALV_STR-RUNID sy-vline 
WA_EMMA_MIGWKBNCH_ALV_STR-CNT_RESTART sy-vline 
WA_EMMA_MIGWKBNCH_ALV_STR-EXECSERVER sy-vline 
WA_EMMA_MIGWKBNCH_ALV_STR-WP_NO sy-vline      INTO ld_text SEPARATED BY SPACE.

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