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

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/MT_PLANACT
*  INTO TABLE @DATA(IT_/SAPAPO/MT_PLANACT2).
*--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/MT_PLANACT INDEX 1 INTO DATA(WA_/SAPAPO/MT_PLANACT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/MT_PLANACT>-DEL_FLG = 1.
</SAPAPO/MT_PLANACT>-PLANID = 1.
</SAPAPO/MT_PLANACT>-VORID = 1.
</SAPAPO/MT_PLANACT>-VORNR = 1.
</SAPAPO/MT_PLANACT>-ACTID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/MT_PLANACT-ACTNR, sy-vline,
  WA_/SAPAPO/MT_PLANACT-SCRAP, sy-vline,
  WA_/SAPAPO/MT_PLANACT-ACTTYPE, sy-vline,
  WA_/SAPAPO/MT_PLANACT-SETUP, sy-vline,
  WA_/SAPAPO/MT_PLANACT-TIPP, sy-vline,
  WA_/SAPAPO/MT_PLANACT-NOSYNCFLG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/MT_PLANACT 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/MT_PLANACT 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/MT_PLANACT INTO WA_/SAPAPO/MT_PLANACT.


*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/MT_PLANACT_STR, 
DEL_FLG TYPE STRING,
PLANID TYPE STRING,
VORID TYPE STRING,
VORNR TYPE STRING,
ACTID TYPE STRING,
ACTNR TYPE STRING,
SCRAP TYPE STRING,
ACTTYPE TYPE STRING,
SETUP TYPE STRING,
TIPP TYPE STRING,
NOSYNCFLG TYPE STRING,
EFFECTIVITY TYPE STRING,
MET_LRCH TYPE STRING,
MAX_FERTL TYPE STRING,
FIX_AS_J TYPE STRING,
FIX_AS_E TYPE STRING,
FIX_AS_L TYPE STRING,
ABL_ZAHL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/MT_PLANACT_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/MT_PLANACT_STR-DEL_FLG sy-vline 
WA_/SAPAPO/MT_PLANACT_STR-PLANID sy-vline 
WA_/SAPAPO/MT_PLANACT_STR-VORID sy-vline 
WA_/SAPAPO/MT_PLANACT_STR-VORNR sy-vline 
WA_/SAPAPO/MT_PLANACT_STR-ACTID sy-vline 
WA_/SAPAPO/MT_PLANACT_STR-ACTNR sy-vline 
WA_/SAPAPO/MT_PLANACT_STR-SCRAP sy-vline 
WA_/SAPAPO/MT_PLANACT_STR-ACTTYPE sy-vline 
WA_/SAPAPO/MT_PLANACT_STR-SETUP sy-vline 
WA_/SAPAPO/MT_PLANACT_STR-TIPP sy-vline 
WA_/SAPAPO/MT_PLANACT_STR-NOSYNCFLG sy-vline 
WA_/SAPAPO/MT_PLANACT_STR-EFFECTIVITY sy-vline 
WA_/SAPAPO/MT_PLANACT_STR-MET_LRCH sy-vline 
WA_/SAPAPO/MT_PLANACT_STR-MAX_FERTL sy-vline 
WA_/SAPAPO/MT_PLANACT_STR-FIX_AS_J sy-vline 
WA_/SAPAPO/MT_PLANACT_STR-FIX_AS_E sy-vline 
WA_/SAPAPO/MT_PLANACT_STR-FIX_AS_L sy-vline 
WA_/SAPAPO/MT_PLANACT_STR-ABL_ZAHL sy-vline      INTO ld_text SEPARATED BY SPACE.

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