ABAP Select data from SAP table MPES_WI_EMB_API_PARAMETER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MPES_WI_EMB_API_PARAMETER
*  INTO TABLE @DATA(IT_MPES_WI_EMB_API_PARAMETER2).
*--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_MPES_WI_EMB_API_PARAMETER INDEX 1 INTO DATA(WA_MPES_WI_EMB_API_PARAMETER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MPES_WI_EMB_API_PARAMETER>-WI = 1.
<MPES_WI_EMB_API_PARAMETER>-OAN_ID = 1.
<MPES_WI_EMB_API_PARAMETER>-OAN_VERSION_NO = 1.
<MPES_WI_EMB_API_PARAMETER>-OAN_ELEMENT_NUMBER = 1.
<MPES_WI_EMB_API_PARAMETER>-OAN_SEGMENT_TYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MPES_WI_EMB_API_PARAMETER-OA_ID, sy-vline,
  WA_MPES_WI_EMB_API_PARAMETER-OA_VERSION_NO, sy-vline,
  WA_MPES_WI_EMB_API_PARAMETER-MANDT, sy-vline,
  WA_MPES_WI_EMB_API_PARAMETER-WI_ID, sy-vline,
  WA_MPES_WI_EMB_API_PARAMETER-WI_VERSION_NO, sy-vline,
  WA_MPES_WI_EMB_API_PARAMETER-WI_RELEASE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MPES_WI_EMB_API_PARAMETER 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_MPES_WI_EMB_API_PARAMETER 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_MPES_WI_EMB_API_PARAMETER INTO WA_MPES_WI_EMB_API_PARAMETER.


*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 ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_MPES_WI_EMB_API_PARAMETER-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_WI_EMB_API_PARAMETER-SPRAS.
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_MPES_WI_EMB_API_PARAMETER_STR, 
WI TYPE STRING,
OAN_ID TYPE STRING,
OAN_VERSION_NO TYPE STRING,
OAN_ELEMENT_NUMBER TYPE STRING,
OAN_SEGMENT_TYPE TYPE STRING,
OA_ID TYPE STRING,
OA_VERSION_NO TYPE STRING,
MANDT TYPE STRING,
WI_ID TYPE STRING,
WI_VERSION_NO TYPE STRING,
WI_RELEASE TYPE STRING,
CREATED_BY TYPE STRING,
CREATED_AT TYPE STRING,
CHANGED_BY TYPE STRING,
CHANGED_AT TYPE STRING,
WI_MODE TYPE STRING,
WI_STATUS TYPE STRING,
PLANT TYPE STRING,
EXECUTION_IN_ME TYPE STRING,
WI_CONTENT TYPE STRING,
MANDT TYPE STRING,
WI_CONTENT_UUID TYPE STRING,
WI_CONTENT TYPE STRING,
CURSOR_POSITION_ID TYPE STRING,
IS_PROCESSABLE TYPE STRING,
WI_VERSION TYPE STRING,
MANDT TYPE STRING,
WI_ID TYPE STRING,
WI_VERSION_NO TYPE STRING,
SPRAS TYPE STRING,
WI_CONTENT_UUID TYPE STRING,
CREA_DATE_TIME TYPE STRING,
CREA_UNAME TYPE STRING,
LCHG_DATE_TIME TYPE STRING,
LCHG_UNAME TYPE STRING,
WI_STATUS TYPE STRING,
WI_PLACEHOLDER TYPE STRING,
WI_VARIABLE TYPE STRING,
WI_ST_REF TYPE STRING,
ASSIGNED_MBOM TYPE STRING,
ASSIGNED_MBOM_INDEX TYPE STRING,
SESSIONID TYPE STRING,
GRPIC_ITEMS TYPE STRING,
WI_IC TYPE STRING,
WI_COMPONENTS TYPE STRING,
WI_PRT TYPE STRING,
WI_LOGCOMP TYPE STRING,
WI_CAMERA TYPE STRING,
WI_PMI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MPES_WI_EMB_API_PARAMETER_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_MPES_WI_EMB_API_PARAMETER_STR-WI sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-OAN_ID sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-OAN_VERSION_NO sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-OAN_ELEMENT_NUMBER sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-OAN_SEGMENT_TYPE sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-OA_ID sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-OA_VERSION_NO sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-MANDT sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-WI_ID sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-WI_VERSION_NO sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-WI_RELEASE sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-CREATED_BY sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-CREATED_AT sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-CHANGED_BY sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-CHANGED_AT sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-WI_MODE sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-WI_STATUS sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-PLANT sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-EXECUTION_IN_ME sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-WI_CONTENT sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-MANDT sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-WI_CONTENT_UUID sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-WI_CONTENT sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-CURSOR_POSITION_ID sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-IS_PROCESSABLE sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-WI_VERSION sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-MANDT sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-WI_ID sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-WI_VERSION_NO sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-SPRAS sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-WI_CONTENT_UUID sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-CREA_DATE_TIME sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-CREA_UNAME sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-LCHG_DATE_TIME sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-LCHG_UNAME sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-WI_STATUS sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-WI_PLACEHOLDER sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-WI_VARIABLE sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-WI_ST_REF sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-ASSIGNED_MBOM sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-ASSIGNED_MBOM_INDEX sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-SESSIONID sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-GRPIC_ITEMS sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-WI_IC sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-WI_COMPONENTS sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-WI_PRT sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-WI_LOGCOMP sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-WI_CAMERA sy-vline 
WA_MPES_WI_EMB_API_PARAMETER_STR-WI_PMI sy-vline      INTO ld_text SEPARATED BY SPACE.

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