ABAP Select data from SAP table EWAEL_PLANTJOURNAL_DP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EWAEL_PLANTJOURNAL_DP
*  INTO TABLE @DATA(IT_EWAEL_PLANTJOURNAL_DP2).
*--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_EWAEL_PLANTJOURNAL_DP INDEX 1 INTO DATA(WA_EWAEL_PLANTJOURNAL_DP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EWAEL_PLANTJOURNAL_DP>-MANDT = 1.
<EWAEL_PLANTJOURNAL_DP>-WDPLANTNR = 1.
<EWAEL_PLANTJOURNAL_DP>-WDPLANTDESC = 1.
<EWAEL_PLANTJOURNAL_DP>-WDPLANTTYPE = 1.
<EWAEL_PLANTJOURNAL_DP>-WDPLANTTYPEDESC = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EWAEL_PLANTJOURNAL_DP-SELECTDATE, sy-vline,
  WA_EWAEL_PLANTJOURNAL_DP-TPLNR, sy-vline,
  WA_EWAEL_PLANTJOURNAL_DP-ADDRNUMBER, sy-vline,
  WA_EWAEL_PLANTJOURNAL_DP-TITLE, sy-vline,
  WA_EWAEL_PLANTJOURNAL_DP-NAME1, sy-vline,
  WA_EWAEL_PLANTJOURNAL_DP-NAME2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EWAEL_PLANTJOURNAL_DP 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_EWAEL_PLANTJOURNAL_DP 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_EWAEL_PLANTJOURNAL_DP INTO WA_EWAEL_PLANTJOURNAL_DP.


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

*Conversion exit TPLNR, internal->external for field TPLNR
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_EWAEL_PLANTJOURNAL_DP-TPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWAEL_PLANTJOURNAL_DP-TPLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ADDRNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EWAEL_PLANTJOURNAL_DP-ADDRNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWAEL_PLANTJOURNAL_DP-ADDRNUMBER.
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_EWAEL_PLANTJOURNAL_DP_STR, 
MANDT TYPE STRING,
WDPLANTNR TYPE STRING,
WDPLANTDESC TYPE STRING,
WDPLANTTYPE TYPE STRING,
WDPLANTTYPEDESC TYPE STRING,
SELECTDATE TYPE STRING,
TPLNR TYPE STRING,
ADDRNUMBER TYPE STRING,
TITLE TYPE STRING,
NAME1 TYPE STRING,
NAME2 TYPE STRING,
NAME_TXT TYPE STRING,
CITY1 TYPE STRING,
CITY2 TYPE STRING,
POST_CODE1 TYPE STRING,
COUNTRY TYPE STRING,
STREET TYPE STRING,
HOUSE_NUM1 TYPE STRING,
REGION TYPE STRING,
ADDR_SHORT TYPE STRING,
SELECTDATETO TYPE STRING,
SELTYPE TYPE STRING,
RANGEVISIBLEWDPLANTNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EWAEL_PLANTJOURNAL_DP_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_EWAEL_PLANTJOURNAL_DP_STR-MANDT sy-vline 
WA_EWAEL_PLANTJOURNAL_DP_STR-WDPLANTNR sy-vline 
WA_EWAEL_PLANTJOURNAL_DP_STR-WDPLANTDESC sy-vline 
WA_EWAEL_PLANTJOURNAL_DP_STR-WDPLANTTYPE sy-vline 
WA_EWAEL_PLANTJOURNAL_DP_STR-WDPLANTTYPEDESC sy-vline 
WA_EWAEL_PLANTJOURNAL_DP_STR-SELECTDATE sy-vline 
WA_EWAEL_PLANTJOURNAL_DP_STR-TPLNR sy-vline 
WA_EWAEL_PLANTJOURNAL_DP_STR-ADDRNUMBER sy-vline 
WA_EWAEL_PLANTJOURNAL_DP_STR-TITLE sy-vline 
WA_EWAEL_PLANTJOURNAL_DP_STR-NAME1 sy-vline 
WA_EWAEL_PLANTJOURNAL_DP_STR-NAME2 sy-vline 
WA_EWAEL_PLANTJOURNAL_DP_STR-NAME_TXT sy-vline 
WA_EWAEL_PLANTJOURNAL_DP_STR-CITY1 sy-vline 
WA_EWAEL_PLANTJOURNAL_DP_STR-CITY2 sy-vline 
WA_EWAEL_PLANTJOURNAL_DP_STR-POST_CODE1 sy-vline 
WA_EWAEL_PLANTJOURNAL_DP_STR-COUNTRY sy-vline 
WA_EWAEL_PLANTJOURNAL_DP_STR-STREET sy-vline 
WA_EWAEL_PLANTJOURNAL_DP_STR-HOUSE_NUM1 sy-vline 
WA_EWAEL_PLANTJOURNAL_DP_STR-REGION sy-vline 
WA_EWAEL_PLANTJOURNAL_DP_STR-ADDR_SHORT sy-vline 
WA_EWAEL_PLANTJOURNAL_DP_STR-SELECTDATETO sy-vline 
WA_EWAEL_PLANTJOURNAL_DP_STR-SELTYPE sy-vline 
WA_EWAEL_PLANTJOURNAL_DP_STR-RANGEVISIBLEWDPLANTNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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