ABAP Select data from SAP table EAMPIC_S_MP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EAMPIC_S_MP
*  INTO TABLE @DATA(IT_EAMPIC_S_MP2).
*--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_EAMPIC_S_MP INDEX 1 INTO DATA(WA_EAMPIC_S_MP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EAMPIC_S_MP>-POINT = 1.
<EAMPIC_S_MP>-PSORT = 1.
<EAMPIC_S_MP>-PTTXT = 1.
<EAMPIC_S_MP>-MLANG = 1.
<EAMPIC_S_MP>-INACT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EAMPIC_S_MP-INDCT, sy-vline,
  WA_EAMPIC_S_MP-ATNAM, sy-vline,
  WA_EAMPIC_S_MP-ATFOR, sy-vline,
  WA_EAMPIC_S_MP-UNITC, sy-vline,
  WA_EAMPIC_S_MP-MRMIC, sy-vline,
  WA_EAMPIC_S_MP-MRMAC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EAMPIC_S_MP 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_EAMPIC_S_MP 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_EAMPIC_S_MP INTO WA_EAMPIC_S_MP.


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

*Conversion exit ISOLA, internal->external for field MLANG
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_EAMPIC_S_MP-MLANG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EAMPIC_S_MP-MLANG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit LUNIT, internal->external for field UNITC
CALL FUNCTION 'CONVERSION_EXIT_LUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EAMPIC_S_MP-UNITC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EAMPIC_S_MP-UNITC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit LUNIT, internal->external for field UNITM
CALL FUNCTION 'CONVERSION_EXIT_LUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EAMPIC_S_MP-UNITM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EAMPIC_S_MP-UNITM.
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_EAMPIC_S_MP_STR, 
POINT TYPE STRING,
PSORT TYPE STRING,
PTTXT TYPE STRING,
MLANG TYPE STRING,
INACT TYPE STRING,
INDCT TYPE STRING,
ATNAM TYPE STRING,
ATFOR TYPE STRING,
UNITC TYPE STRING,
MRMIC TYPE STRING,
MRMAC TYPE STRING,
UNITM TYPE STRING,
MPOBJ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EAMPIC_S_MP_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_EAMPIC_S_MP_STR-POINT sy-vline 
WA_EAMPIC_S_MP_STR-PSORT sy-vline 
WA_EAMPIC_S_MP_STR-PTTXT sy-vline 
WA_EAMPIC_S_MP_STR-MLANG sy-vline 
WA_EAMPIC_S_MP_STR-INACT sy-vline 
WA_EAMPIC_S_MP_STR-INDCT sy-vline 
WA_EAMPIC_S_MP_STR-ATNAM sy-vline 
WA_EAMPIC_S_MP_STR-ATFOR sy-vline 
WA_EAMPIC_S_MP_STR-UNITC sy-vline 
WA_EAMPIC_S_MP_STR-MRMIC sy-vline 
WA_EAMPIC_S_MP_STR-MRMAC sy-vline 
WA_EAMPIC_S_MP_STR-UNITM sy-vline 
WA_EAMPIC_S_MP_STR-MPOBJ sy-vline      INTO ld_text SEPARATED BY SPACE.

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