ABAP Select data from SAP table PLNAL_ARC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PLNAL_ARC
*  INTO TABLE @DATA(IT_PLNAL_ARC2).
*--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_PLNAL_ARC INDEX 1 INTO DATA(WA_PLNAL_ARC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PLNAL_ARC>-MANDT = 1.
<PLNAL_ARC>-PLNTY = 1.
<PLNAL_ARC>-PLNNR = 1.
<PLNAL_ARC>-PLNAL = 1.
<PLNAL_ARC>-ABDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PLNAL_ARC-ABANZ, sy-vline,
  WA_PLNAL_ARC-AEDAT, sy-vline,
  WA_PLNAL_ARC-AEUZEIT, sy-vline,
  WA_PLNAL_ARC-AENAM, sy-vline,
  WA_PLNAL_ARC-DELKZ, sy-vline,
  WA_PLNAL_ARC-STAUFG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PLNAL_ARC 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_PLNAL_ARC 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_PLNAL_ARC INTO WA_PLNAL_ARC.


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

*Conversion exit ALPHA, internal->external for field PLNAL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PLNAL_ARC-PLNAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PLNAL_ARC-PLNAL.
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_PLNAL_ARC_STR, 
MANDT TYPE STRING,
PLNTY TYPE STRING,
PLNNR TYPE STRING,
PLNAL TYPE STRING,
ABDAT TYPE STRING,
ABANZ TYPE STRING,
AEDAT TYPE STRING,
AEUZEIT TYPE STRING,
AENAM TYPE STRING,
DELKZ TYPE STRING,
STAUFG TYPE STRING,
FLG_ECM TYPE STRING,
FLG_ECM_PAR TYPE STRING,
SUBTYPE TYPE STRING,
ALTEXT TYPE STRING,
REWORK TYPE STRING,
RELAXED TYPE STRING,
EXECUTION_IN_ME TYPE STRING,
REFERENCE_TEMPLATE_TYPE TYPE STRING,
REFERENCE_TEMPLATE_CATEGORY TYPE STRING,
REFERENCE_TEMPLATE_OWNER TYPE STRING,
ERP_INTEGRATION TYPE STRING,
ARCH_TIME TYPE STRING,
ARCH_DATE TYPE STRING,
RESET_FLAG TYPE STRING,
STTAG TYPE STRING,
OB_DE_FLAG TYPE STRING,
KAP_ARBPL TYPE STRING,
NNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PLNAL_ARC_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_PLNAL_ARC_STR-MANDT sy-vline 
WA_PLNAL_ARC_STR-PLNTY sy-vline 
WA_PLNAL_ARC_STR-PLNNR sy-vline 
WA_PLNAL_ARC_STR-PLNAL sy-vline 
WA_PLNAL_ARC_STR-ABDAT sy-vline 
WA_PLNAL_ARC_STR-ABANZ sy-vline 
WA_PLNAL_ARC_STR-AEDAT sy-vline 
WA_PLNAL_ARC_STR-AEUZEIT sy-vline 
WA_PLNAL_ARC_STR-AENAM sy-vline 
WA_PLNAL_ARC_STR-DELKZ sy-vline 
WA_PLNAL_ARC_STR-STAUFG sy-vline 
WA_PLNAL_ARC_STR-FLG_ECM sy-vline 
WA_PLNAL_ARC_STR-FLG_ECM_PAR sy-vline 
WA_PLNAL_ARC_STR-SUBTYPE sy-vline 
WA_PLNAL_ARC_STR-ALTEXT sy-vline 
WA_PLNAL_ARC_STR-REWORK sy-vline 
WA_PLNAL_ARC_STR-RELAXED sy-vline 
WA_PLNAL_ARC_STR-EXECUTION_IN_ME sy-vline 
WA_PLNAL_ARC_STR-REFERENCE_TEMPLATE_TYPE sy-vline 
WA_PLNAL_ARC_STR-REFERENCE_TEMPLATE_CATEGORY sy-vline 
WA_PLNAL_ARC_STR-REFERENCE_TEMPLATE_OWNER sy-vline 
WA_PLNAL_ARC_STR-ERP_INTEGRATION sy-vline 
WA_PLNAL_ARC_STR-ARCH_TIME sy-vline 
WA_PLNAL_ARC_STR-ARCH_DATE sy-vline 
WA_PLNAL_ARC_STR-RESET_FLAG sy-vline 
WA_PLNAL_ARC_STR-STTAG sy-vline 
WA_PLNAL_ARC_STR-OB_DE_FLAG sy-vline 
WA_PLNAL_ARC_STR-KAP_ARBPL sy-vline 
WA_PLNAL_ARC_STR-NNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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