ABAP Select data from SAP table MSIT_PIR_EINA_S into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MSIT_PIR_EINA_S
*  INTO TABLE @DATA(IT_MSIT_PIR_EINA_S2).
*--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_MSIT_PIR_EINA_S INDEX 1 INTO DATA(WA_MSIT_PIR_EINA_S2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MSIT_PIR_EINA_S>-MANDT = 1.
<MSIT_PIR_EINA_S>-INFNR = 1.
<MSIT_PIR_EINA_S>-MATNR = 1.
<MSIT_PIR_EINA_S>-MATKL = 1.
<MSIT_PIR_EINA_S>-LIFNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MSIT_PIR_EINA_S-LOEKZ, sy-vline,
  WA_MSIT_PIR_EINA_S-ERDAT, sy-vline,
  WA_MSIT_PIR_EINA_S-ERNAM, sy-vline,
  WA_MSIT_PIR_EINA_S-TXZ01, sy-vline,
  WA_MSIT_PIR_EINA_S-SORTL, sy-vline,
  WA_MSIT_PIR_EINA_S-MEINS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MSIT_PIR_EINA_S 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_MSIT_PIR_EINA_S 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_MSIT_PIR_EINA_S INTO WA_MSIT_PIR_EINA_S.


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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MSIT_PIR_EINA_S-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MSIT_PIR_EINA_S-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MSIT_PIR_EINA_S-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MSIT_PIR_EINA_S-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MSIT_PIR_EINA_S-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MSIT_PIR_EINA_S-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field LMEIN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MSIT_PIR_EINA_S-LMEIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MSIT_PIR_EINA_S-LMEIN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOLIF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MSIT_PIR_EINA_S-KOLIF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MSIT_PIR_EINA_S-KOLIF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field PUNEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MSIT_PIR_EINA_S-PUNEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MSIT_PIR_EINA_S-PUNEI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MFRNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MSIT_PIR_EINA_S-MFRNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MSIT_PIR_EINA_S-MFRNR.
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_MSIT_PIR_EINA_S_STR, 
MANDT TYPE STRING,
INFNR TYPE STRING,
MATNR TYPE STRING,
MATKL TYPE STRING,
LIFNR TYPE STRING,
LOEKZ TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
TXZ01 TYPE STRING,
SORTL TYPE STRING,
MEINS TYPE STRING,
UMREZ TYPE STRING,
UMREN TYPE STRING,
IDNLF TYPE STRING,
VERKF TYPE STRING,
TELF1 TYPE STRING,
MAHN1 TYPE STRING,
MAHN2 TYPE STRING,
MAHN3 TYPE STRING,
URZNR TYPE STRING,
URZDT TYPE STRING,
URZLA TYPE STRING,
URZTP TYPE STRING,
URZZT TYPE STRING,
LMEIN TYPE STRING,
REGIO TYPE STRING,
VABME TYPE STRING,
LTSNR TYPE STRING,
LTSSF TYPE STRING,
WGLIF TYPE STRING,
RUECK TYPE STRING,
LIFAB TYPE STRING,
LIFBI TYPE STRING,
KOLIF TYPE STRING,
ANZPU TYPE STRING,
PUNEI TYPE STRING,
RELIF TYPE STRING,
MFRNR TYPE STRING,
DUMMY_EINA_INCL_EEW_PS TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
ISEOPBLOCKED TYPE STRING,
UPD_EINA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MSIT_PIR_EINA_S_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_MSIT_PIR_EINA_S_STR-MANDT sy-vline 
WA_MSIT_PIR_EINA_S_STR-INFNR sy-vline 
WA_MSIT_PIR_EINA_S_STR-MATNR sy-vline 
WA_MSIT_PIR_EINA_S_STR-MATKL sy-vline 
WA_MSIT_PIR_EINA_S_STR-LIFNR sy-vline 
WA_MSIT_PIR_EINA_S_STR-LOEKZ sy-vline 
WA_MSIT_PIR_EINA_S_STR-ERDAT sy-vline 
WA_MSIT_PIR_EINA_S_STR-ERNAM sy-vline 
WA_MSIT_PIR_EINA_S_STR-TXZ01 sy-vline 
WA_MSIT_PIR_EINA_S_STR-SORTL sy-vline 
WA_MSIT_PIR_EINA_S_STR-MEINS sy-vline 
WA_MSIT_PIR_EINA_S_STR-UMREZ sy-vline 
WA_MSIT_PIR_EINA_S_STR-UMREN sy-vline 
WA_MSIT_PIR_EINA_S_STR-IDNLF sy-vline 
WA_MSIT_PIR_EINA_S_STR-VERKF sy-vline 
WA_MSIT_PIR_EINA_S_STR-TELF1 sy-vline 
WA_MSIT_PIR_EINA_S_STR-MAHN1 sy-vline 
WA_MSIT_PIR_EINA_S_STR-MAHN2 sy-vline 
WA_MSIT_PIR_EINA_S_STR-MAHN3 sy-vline 
WA_MSIT_PIR_EINA_S_STR-URZNR sy-vline 
WA_MSIT_PIR_EINA_S_STR-URZDT sy-vline 
WA_MSIT_PIR_EINA_S_STR-URZLA sy-vline 
WA_MSIT_PIR_EINA_S_STR-URZTP sy-vline 
WA_MSIT_PIR_EINA_S_STR-URZZT sy-vline 
WA_MSIT_PIR_EINA_S_STR-LMEIN sy-vline 
WA_MSIT_PIR_EINA_S_STR-REGIO sy-vline 
WA_MSIT_PIR_EINA_S_STR-VABME sy-vline 
WA_MSIT_PIR_EINA_S_STR-LTSNR sy-vline 
WA_MSIT_PIR_EINA_S_STR-LTSSF sy-vline 
WA_MSIT_PIR_EINA_S_STR-WGLIF sy-vline 
WA_MSIT_PIR_EINA_S_STR-RUECK sy-vline 
WA_MSIT_PIR_EINA_S_STR-LIFAB sy-vline 
WA_MSIT_PIR_EINA_S_STR-LIFBI sy-vline 
WA_MSIT_PIR_EINA_S_STR-KOLIF sy-vline 
WA_MSIT_PIR_EINA_S_STR-ANZPU sy-vline 
WA_MSIT_PIR_EINA_S_STR-PUNEI sy-vline 
WA_MSIT_PIR_EINA_S_STR-RELIF sy-vline 
WA_MSIT_PIR_EINA_S_STR-MFRNR sy-vline 
WA_MSIT_PIR_EINA_S_STR-DUMMY_EINA_INCL_EEW_PS sy-vline 
WA_MSIT_PIR_EINA_S_STR-LASTCHANGEDATETIME sy-vline 
WA_MSIT_PIR_EINA_S_STR-ISEOPBLOCKED sy-vline 
WA_MSIT_PIR_EINA_S_STR-UPD_EINA sy-vline      INTO ld_text SEPARATED BY SPACE.

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