ABAP Select data from SAP table INVOICE_PLAN_HEADERX into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM INVOICE_PLAN_HEADERX
*  INTO TABLE @DATA(IT_INVOICE_PLAN_HEADERX2).
*--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_INVOICE_PLAN_HEADERX INDEX 1 INTO DATA(WA_INVOICE_PLAN_HEADERX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<INVOICE_PLAN_HEADERX>-IV_PLAN_NUM = 1.
<INVOICE_PLAN_HEADERX>-CATEGORY = 1.
<INVOICE_PLAN_HEADERX>-IP_TYPE = 1.
<INVOICE_PLAN_HEADERX>-SORT_FLD = 1.
<INVOICE_PLAN_HEADERX>-START_DATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_INVOICE_PLAN_HEADERX-END_DATE, sy-vline,
  WA_INVOICE_PLAN_HEADERX-HORIZON, sy-vline,
  WA_INVOICE_PLAN_HEADERX-ORGN_ST_DAT, sy-vline,
  WA_INVOICE_PLAN_HEADERX-ORGN_END_DAT, sy-vline,
  WA_INVOICE_PLAN_HEADERX-PERIOD, sy-vline,
  WA_INVOICE_PLAN_HEADERX-LNGTH_STAND_PRD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_INVOICE_PLAN_HEADERX 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_INVOICE_PLAN_HEADERX 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_INVOICE_PLAN_HEADERX INTO WA_INVOICE_PLAN_HEADERX.


*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_INVOICE_PLAN_HEADERX_STR, 
IV_PLAN_NUM TYPE STRING,
CATEGORY TYPE STRING,
IP_TYPE TYPE STRING,
SORT_FLD TYPE STRING,
START_DATE TYPE STRING,
END_DATE TYPE STRING,
HORIZON TYPE STRING,
ORGN_ST_DAT TYPE STRING,
ORGN_END_DAT TYPE STRING,
PERIOD TYPE STRING,
LNGTH_STAND_PRD TYPE STRING,
REF_IV_PLAN_NUM TYPE STRING,
DATES_FROM TYPE STRING,
IN_ADVANCE TYPE STRING,
ORGN_FROM_DAT TYPE STRING,
DEV_BILL_DAT TYPE STRING,
CALENDER_ID TYPE STRING,
DATES_TO TYPE STRING,
ORGN_UNTIL_DAT TYPE STRING,
PO_NUMBER TYPE STRING,
UNLIMITED TYPE STRING,
AUTO_COR_DAT TYPE STRING,
CHANGE_IND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_INVOICE_PLAN_HEADERX_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_INVOICE_PLAN_HEADERX_STR-IV_PLAN_NUM sy-vline 
WA_INVOICE_PLAN_HEADERX_STR-CATEGORY sy-vline 
WA_INVOICE_PLAN_HEADERX_STR-IP_TYPE sy-vline 
WA_INVOICE_PLAN_HEADERX_STR-SORT_FLD sy-vline 
WA_INVOICE_PLAN_HEADERX_STR-START_DATE sy-vline 
WA_INVOICE_PLAN_HEADERX_STR-END_DATE sy-vline 
WA_INVOICE_PLAN_HEADERX_STR-HORIZON sy-vline 
WA_INVOICE_PLAN_HEADERX_STR-ORGN_ST_DAT sy-vline 
WA_INVOICE_PLAN_HEADERX_STR-ORGN_END_DAT sy-vline 
WA_INVOICE_PLAN_HEADERX_STR-PERIOD sy-vline 
WA_INVOICE_PLAN_HEADERX_STR-LNGTH_STAND_PRD sy-vline 
WA_INVOICE_PLAN_HEADERX_STR-REF_IV_PLAN_NUM sy-vline 
WA_INVOICE_PLAN_HEADERX_STR-DATES_FROM sy-vline 
WA_INVOICE_PLAN_HEADERX_STR-IN_ADVANCE sy-vline 
WA_INVOICE_PLAN_HEADERX_STR-ORGN_FROM_DAT sy-vline 
WA_INVOICE_PLAN_HEADERX_STR-DEV_BILL_DAT sy-vline 
WA_INVOICE_PLAN_HEADERX_STR-CALENDER_ID sy-vline 
WA_INVOICE_PLAN_HEADERX_STR-DATES_TO sy-vline 
WA_INVOICE_PLAN_HEADERX_STR-ORGN_UNTIL_DAT sy-vline 
WA_INVOICE_PLAN_HEADERX_STR-PO_NUMBER sy-vline 
WA_INVOICE_PLAN_HEADERX_STR-UNLIMITED sy-vline 
WA_INVOICE_PLAN_HEADERX_STR-AUTO_COR_DAT sy-vline 
WA_INVOICE_PLAN_HEADERX_STR-CHANGE_IND sy-vline      INTO ld_text SEPARATED BY SPACE.

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