ABAP Select data from SAP table PLPLAN_PARAM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PLPLAN_PARAM
*  INTO TABLE @DATA(IT_PLPLAN_PARAM2).
*--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_PLPLAN_PARAM INDEX 1 INTO DATA(WA_PLPLAN_PARAM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PLPLAN_PARAM>-MANDT = 1.
<PLPLAN_PARAM>-PLNTY = 1.
<PLPLAN_PARAM>-PLNNR = 1.
<PLPLAN_PARAM>-KEYCT = 1.
<PLPLAN_PARAM>-ZAEHL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PLPLAN_PARAM-AENNR, sy-vline,
  WA_PLPLAN_PARAM-DATUV, sy-vline,
  WA_PLPLAN_PARAM-DATUB, sy-vline,
  WA_PLPLAN_PARAM-STLTY, sy-vline,
  WA_PLPLAN_PARAM-STLNR, sy-vline,
  WA_PLPLAN_PARAM-STLAL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PLPLAN_PARAM 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_PLPLAN_PARAM 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_PLPLAN_PARAM INTO WA_PLPLAN_PARAM.


*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_PLPLAN_PARAM-PLNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PLPLAN_PARAM-PLNNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit NUMCV, internal->external for field STLNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_PLPLAN_PARAM-STLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PLPLAN_PARAM-STLNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit CUNIT, internal->external for field VGE01
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PLPLAN_PARAM-VGE01
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PLPLAN_PARAM-VGE01.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VGE02
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PLPLAN_PARAM-VGE02
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PLPLAN_PARAM-VGE02.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VGE03
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PLPLAN_PARAM-VGE03
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PLPLAN_PARAM-VGE03.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VGE04
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PLPLAN_PARAM-VGE04
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PLPLAN_PARAM-VGE04.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VGE05
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PLPLAN_PARAM-VGE05
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PLPLAN_PARAM-VGE05.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VGE06
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PLPLAN_PARAM-VGE06
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PLPLAN_PARAM-VGE06.
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_PLPLAN_PARAM_STR, 
MANDT TYPE STRING,
PLNTY TYPE STRING,
PLNNR TYPE STRING,
KEYCT TYPE STRING,
ZAEHL TYPE STRING,
AENNR TYPE STRING,
DATUV TYPE STRING,
DATUB TYPE STRING,
STLTY TYPE STRING,
STLNR TYPE STRING,
STLAL TYPE STRING,
PLNAL TYPE STRING,
PLNFL TYPE STRING,
PLNKN TYPE STRING,
ARBID TYPE STRING,
OBJTY TYPE STRING,
VGWTS TYPE STRING,
FILL0 TYPE STRING,
AUFAK TYPE STRING,
PAR01 TYPE STRING,
VGE01 TYPE STRING,
FILL1 TYPE STRING,
VGW01 TYPE STRING,
PAR02 TYPE STRING,
VGE02 TYPE STRING,
FILL2 TYPE STRING,
VGW02 TYPE STRING,
PAR03 TYPE STRING,
VGE03 TYPE STRING,
FILL3 TYPE STRING,
VGW03 TYPE STRING,
PAR04 TYPE STRING,
VGE04 TYPE STRING,
FILL4 TYPE STRING,
VGW04 TYPE STRING,
PAR05 TYPE STRING,
VGE05 TYPE STRING,
FILL5 TYPE STRING,
VGW05 TYPE STRING,
PAR06 TYPE STRING,
VGE06 TYPE STRING,
FILL6 TYPE STRING,
VGW06 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PLPLAN_PARAM_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_PLPLAN_PARAM_STR-MANDT sy-vline 
WA_PLPLAN_PARAM_STR-PLNTY sy-vline 
WA_PLPLAN_PARAM_STR-PLNNR sy-vline 
WA_PLPLAN_PARAM_STR-KEYCT sy-vline 
WA_PLPLAN_PARAM_STR-ZAEHL sy-vline 
WA_PLPLAN_PARAM_STR-AENNR sy-vline 
WA_PLPLAN_PARAM_STR-DATUV sy-vline 
WA_PLPLAN_PARAM_STR-DATUB sy-vline 
WA_PLPLAN_PARAM_STR-STLTY sy-vline 
WA_PLPLAN_PARAM_STR-STLNR sy-vline 
WA_PLPLAN_PARAM_STR-STLAL sy-vline 
WA_PLPLAN_PARAM_STR-PLNAL sy-vline 
WA_PLPLAN_PARAM_STR-PLNFL sy-vline 
WA_PLPLAN_PARAM_STR-PLNKN sy-vline 
WA_PLPLAN_PARAM_STR-ARBID sy-vline 
WA_PLPLAN_PARAM_STR-OBJTY sy-vline 
WA_PLPLAN_PARAM_STR-VGWTS sy-vline 
WA_PLPLAN_PARAM_STR-FILL0 sy-vline 
WA_PLPLAN_PARAM_STR-AUFAK sy-vline 
WA_PLPLAN_PARAM_STR-PAR01 sy-vline 
WA_PLPLAN_PARAM_STR-VGE01 sy-vline 
WA_PLPLAN_PARAM_STR-FILL1 sy-vline 
WA_PLPLAN_PARAM_STR-VGW01 sy-vline 
WA_PLPLAN_PARAM_STR-PAR02 sy-vline 
WA_PLPLAN_PARAM_STR-VGE02 sy-vline 
WA_PLPLAN_PARAM_STR-FILL2 sy-vline 
WA_PLPLAN_PARAM_STR-VGW02 sy-vline 
WA_PLPLAN_PARAM_STR-PAR03 sy-vline 
WA_PLPLAN_PARAM_STR-VGE03 sy-vline 
WA_PLPLAN_PARAM_STR-FILL3 sy-vline 
WA_PLPLAN_PARAM_STR-VGW03 sy-vline 
WA_PLPLAN_PARAM_STR-PAR04 sy-vline 
WA_PLPLAN_PARAM_STR-VGE04 sy-vline 
WA_PLPLAN_PARAM_STR-FILL4 sy-vline 
WA_PLPLAN_PARAM_STR-VGW04 sy-vline 
WA_PLPLAN_PARAM_STR-PAR05 sy-vline 
WA_PLPLAN_PARAM_STR-VGE05 sy-vline 
WA_PLPLAN_PARAM_STR-FILL5 sy-vline 
WA_PLPLAN_PARAM_STR-VGW05 sy-vline 
WA_PLPLAN_PARAM_STR-PAR06 sy-vline 
WA_PLPLAN_PARAM_STR-VGE06 sy-vline 
WA_PLPLAN_PARAM_STR-FILL6 sy-vline 
WA_PLPLAN_PARAM_STR-VGW06 sy-vline      INTO ld_text SEPARATED BY SPACE.

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