ABAP Select data from SAP table NJIT_S2P_S2L_PLANNING_ELEMENT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP NJIT_S2P_S2L_PLANNING_ELEMENT 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 NJIT_S2P_S2L_PLANNING_ELEMENT. 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 NJIT_S2P_S2L_PLANNING_ELEMENT 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_NJIT_S2P_S2L_PLANNING_ELEMENT TYPE STANDARD TABLE OF NJIT_S2P_S2L_PLANNING_ELEMENT,
      WA_NJIT_S2P_S2L_PLANNING_ELEMENT TYPE NJIT_S2P_S2L_PLANNING_ELEMENT,
      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: <NJIT_S2P_S2L_PLANNING_ELEMENT> TYPE NJIT_S2P_S2L_PLANNING_ELEMENT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_NJIT_S2P_S2L_PLANNING_ELEMENT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM NJIT_S2P_S2L_PLANNING_ELEMENT
  INTO TABLE IT_NJIT_S2P_S2L_PLANNING_ELEMENT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM NJIT_S2P_S2L_PLANNING_ELEMENT
*  INTO TABLE @DATA(IT_NJIT_S2P_S2L_PLANNING_ELEMENT2).
*--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_NJIT_S2P_S2L_PLANNING_ELEMENT INDEX 1 INTO DATA(WA_NJIT_S2P_S2L_PLANNING_ELEMENT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_NJIT_S2P_S2L_PLANNING_ELEMENT ASSIGNING <NJIT_S2P_S2L_PLANNING_ELEMENT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<NJIT_S2P_S2L_PLANNING_ELEMENT>-CONTROL_CYCLE = 1.
<NJIT_S2P_S2L_PLANNING_ELEMENT>-ELEMENT_TYPE = 1.
<NJIT_S2P_S2L_PLANNING_ELEMENT>-PLANNING_ELEMENTS_TYPE = 1.
<NJIT_S2P_S2L_PLANNING_ELEMENT>-PLNG_ELEMENT = 1.
<NJIT_S2P_S2L_PLANNING_ELEMENT>-JITHEADERKEY = 1.

ENDLOOP.

LOOP AT IT_NJIT_S2P_S2L_PLANNING_ELEMENT INTO WA_NJIT_S2P_S2L_PLANNING_ELEMENT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_NJIT_S2P_S2L_PLANNING_ELEMENT-INTERNAL_OBJKEY, sy-vline,
  WA_NJIT_S2P_S2L_PLANNING_ELEMENT-QUANTITY, sy-vline,
  WA_NJIT_S2P_S2L_PLANNING_ELEMENT-AVAILABLE_QUANTITY, sy-vline,
  WA_NJIT_S2P_S2L_PLANNING_ELEMENT-MISSING_QUANTITY, sy-vline,
  WA_NJIT_S2P_S2L_PLANNING_ELEMENT-SAFETY_STOCK, sy-vline,
  WA_NJIT_S2P_S2L_PLANNING_ELEMENT-UOM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_NJIT_S2P_S2L_PLANNING_ELEMENT 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_NJIT_S2P_S2L_PLANNING_ELEMENT 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_NJIT_S2P_S2L_PLANNING_ELEMENT INTO WA_NJIT_S2P_S2L_PLANNING_ELEMENT.


*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 CONTROL_CYCLE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_NJIT_S2P_S2L_PLANNING_ELEMENT-CONTROL_CYCLE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_NJIT_S2P_S2L_PLANNING_ELEMENT-CONTROL_CYCLE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_NJIT_S2P_S2L_PLANNING_ELEMENT-UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_NJIT_S2P_S2L_PLANNING_ELEMENT-UOM.
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_NJIT_S2P_S2L_PLANNING_ELEMENT_STR, 
CONTROL_CYCLE TYPE STRING,
ELEMENT_TYPE TYPE STRING,
PLANNING_ELEMENTS_TYPE TYPE STRING,
PLNG_ELEMENT TYPE STRING,
JITHEADERKEY TYPE STRING,
INTERNAL_OBJKEY TYPE STRING,
QUANTITY TYPE STRING,
AVAILABLE_QUANTITY TYPE STRING,
MISSING_QUANTITY TYPE STRING,
SAFETY_STOCK TYPE STRING,
UOM TYPE STRING,
EFFECTIVE_DATE TYPE STRING,
EFFECTIVE_TIME TYPE STRING,
EFFECTIVE_TIMESTAMP TYPE STRING,
SUPPLY_DATE TYPE STRING,
SUPPLY_TIME TYPE STRING,
SUPPLY_DATETIMESTAMP TYPE STRING,
RECORD_TYPE TYPE STRING,
CREATION_MODE TYPE STRING,
ELEMENT_TYPE_DESC TYPE STRING,
PRODUCTIONSUPPLYAREA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_NJIT_S2P_S2L_PLANNING_ELEMENT_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_NJIT_S2P_S2L_PLANNING_ELEMENT_STR-CONTROL_CYCLE sy-vline 
WA_NJIT_S2P_S2L_PLANNING_ELEMENT_STR-ELEMENT_TYPE sy-vline 
WA_NJIT_S2P_S2L_PLANNING_ELEMENT_STR-PLANNING_ELEMENTS_TYPE sy-vline 
WA_NJIT_S2P_S2L_PLANNING_ELEMENT_STR-PLNG_ELEMENT sy-vline 
WA_NJIT_S2P_S2L_PLANNING_ELEMENT_STR-JITHEADERKEY sy-vline 
WA_NJIT_S2P_S2L_PLANNING_ELEMENT_STR-INTERNAL_OBJKEY sy-vline 
WA_NJIT_S2P_S2L_PLANNING_ELEMENT_STR-QUANTITY sy-vline 
WA_NJIT_S2P_S2L_PLANNING_ELEMENT_STR-AVAILABLE_QUANTITY sy-vline 
WA_NJIT_S2P_S2L_PLANNING_ELEMENT_STR-MISSING_QUANTITY sy-vline 
WA_NJIT_S2P_S2L_PLANNING_ELEMENT_STR-SAFETY_STOCK sy-vline 
WA_NJIT_S2P_S2L_PLANNING_ELEMENT_STR-UOM sy-vline 
WA_NJIT_S2P_S2L_PLANNING_ELEMENT_STR-EFFECTIVE_DATE sy-vline 
WA_NJIT_S2P_S2L_PLANNING_ELEMENT_STR-EFFECTIVE_TIME sy-vline 
WA_NJIT_S2P_S2L_PLANNING_ELEMENT_STR-EFFECTIVE_TIMESTAMP sy-vline 
WA_NJIT_S2P_S2L_PLANNING_ELEMENT_STR-SUPPLY_DATE sy-vline 
WA_NJIT_S2P_S2L_PLANNING_ELEMENT_STR-SUPPLY_TIME sy-vline 
WA_NJIT_S2P_S2L_PLANNING_ELEMENT_STR-SUPPLY_DATETIMESTAMP sy-vline 
WA_NJIT_S2P_S2L_PLANNING_ELEMENT_STR-RECORD_TYPE sy-vline 
WA_NJIT_S2P_S2L_PLANNING_ELEMENT_STR-CREATION_MODE sy-vline 
WA_NJIT_S2P_S2L_PLANNING_ELEMENT_STR-ELEMENT_TYPE_DESC sy-vline 
WA_NJIT_S2P_S2L_PLANNING_ELEMENT_STR-PRODUCTIONSUPPLYAREA sy-vline      INTO ld_text SEPARATED BY SPACE.

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