ABAP Select data from SAP table /SAPAPO/MSNP_REIS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SAPAPO/MSNP_REIS 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 /SAPAPO/MSNP_REIS. 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 /SAPAPO/MSNP_REIS 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_/SAPAPO/MSNP_REIS TYPE STANDARD TABLE OF /SAPAPO/MSNP_REIS,
      WA_/SAPAPO/MSNP_REIS TYPE /SAPAPO/MSNP_REIS,
      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: </SAPAPO/MSNP_REIS> TYPE /SAPAPO/MSNP_REIS.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SAPAPO/MSNP_REIS
  INTO TABLE IT_/SAPAPO/MSNP_REIS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/MSNP_REIS
*  INTO TABLE @DATA(IT_/SAPAPO/MSNP_REIS2).
*--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_/SAPAPO/MSNP_REIS INDEX 1 INTO DATA(WA_/SAPAPO/MSNP_REIS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SAPAPO/MSNP_REIS ASSIGNING </SAPAPO/MSNP_REIS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/MSNP_REIS>-MATID = 1.
</SAPAPO/MSNP_REIS>-LOCID = 1.
</SAPAPO/MSNP_REIS>-TSTTO = 1.
</SAPAPO/MSNP_REIS>-TSTFR = 1.
</SAPAPO/MSNP_REIS>-DMDP1 = 1.

ENDLOOP.

LOOP AT IT_/SAPAPO/MSNP_REIS INTO WA_/SAPAPO/MSNP_REIS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/MSNP_REIS-DMDP2, sy-vline,
  WA_/SAPAPO/MSNP_REIS-DMDP3, sy-vline,
  WA_/SAPAPO/MSNP_REIS-DMDP4, sy-vline,
  WA_/SAPAPO/MSNP_REIS-DMDP5, sy-vline,
  WA_/SAPAPO/MSNP_REIS-DFCST, sy-vline,
  WA_/SAPAPO/MSNP_REIS-DMDAB, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/MSNP_REIS 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_/SAPAPO/MSNP_REIS 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_/SAPAPO/MSNP_REIS INTO WA_/SAPAPO/MSNP_REIS.


*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_/SAPAPO/MSNP_REIS_STR, 
MATID TYPE STRING,
LOCID TYPE STRING,
TSTTO TYPE STRING,
TSTFR TYPE STRING,
DMDP1 TYPE STRING,
DMDP2 TYPE STRING,
DMDP3 TYPE STRING,
DMDP4 TYPE STRING,
DMDP5 TYPE STRING,
DFCST TYPE STRING,
DMDAB TYPE STRING,
PFCST TYPE STRING,
DMDSE TYPE STRING,
DMDSE_FIX TYPE STRING,
DMDDI TYPE STRING,
DMDDI_FIX TYPE STRING,
DMDDF TYPE STRING,
DMDDT TYPE STRING,
DMDTO TYPE STRING,
DMDNE TYPE STRING,
KPROD TYPE STRING,
KPROD_FIX TYPE STRING,
PPROD TYPE STRING,
PPROD_FIX TYPE STRING,
FPROD TYPE STRING,
PSHIP TYPE STRING,
PSHIP_FIX TYPE STRING,
FSHIP TYPE STRING,
TSHIP TYPE STRING,
ITRAN TYPE STRING,
RECTO TYPE STRING,
DEPAB TYPE STRING,
ATDZU TYPE STRING,
ATDAB TYPE STRING,
ATDZV TYPE STRING,
ATDAV TYPE STRING,
DMDIN TYPE STRING,
RECIN TYPE STRING,
STOIN TYPE STRING,
SYDMD TYPE STRING,
SYSTO TYPE STRING,
SYST1 TYPE STRING,
SYST2 TYPE STRING,
SYST3 TYPE STRING,
SYST4 TYPE STRING,
SYST5 TYPE STRING,
STOCK TYPE STRING,
BACKL TYPE STRING,
SAFTY TYPE STRING,
LAGRZ TYPE STRING,
LAGRD TYPE STRING,
LAGRP TYPE STRING,
MELBE TYPE STRING,
COVER TYPE STRING,
MINCO TYPE STRING,
MAXCO TYPE STRING,
DAT00 TYPE STRING,
DATFR TYPE STRING,
DATTO TYPE STRING,
BUCKE TYPE STRING,
ATAGE TYPE STRING,
ISSUM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/MSNP_REIS_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_/SAPAPO/MSNP_REIS_STR-MATID sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-LOCID sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-TSTTO sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-TSTFR sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-DMDP1 sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-DMDP2 sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-DMDP3 sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-DMDP4 sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-DMDP5 sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-DFCST sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-DMDAB sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-PFCST sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-DMDSE sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-DMDSE_FIX sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-DMDDI sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-DMDDI_FIX sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-DMDDF sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-DMDDT sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-DMDTO sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-DMDNE sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-KPROD sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-KPROD_FIX sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-PPROD sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-PPROD_FIX sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-FPROD sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-PSHIP sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-PSHIP_FIX sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-FSHIP sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-TSHIP sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-ITRAN sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-RECTO sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-DEPAB sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-ATDZU sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-ATDAB sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-ATDZV sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-ATDAV sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-DMDIN sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-RECIN sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-STOIN sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-SYDMD sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-SYSTO sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-SYST1 sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-SYST2 sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-SYST3 sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-SYST4 sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-SYST5 sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-STOCK sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-BACKL sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-SAFTY sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-LAGRZ sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-LAGRD sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-LAGRP sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-MELBE sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-COVER sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-MINCO sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-MAXCO sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-DAT00 sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-DATFR sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-DATTO sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-BUCKE sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-ATAGE sy-vline 
WA_/SAPAPO/MSNP_REIS_STR-ISSUM sy-vline      INTO ld_text SEPARATED BY SPACE.

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