ABAP Select data from SAP table WCS_API_WAP_UPDFLG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WCS_API_WAP_UPDFLG
*  INTO TABLE @DATA(IT_WCS_API_WAP_UPDFLG2).
*--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_WCS_API_WAP_UPDFLG INDEX 1 INTO DATA(WA_WCS_API_WAP_UPDFLG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WCS_API_WAP_UPDFLG>-UPDFLG_CONTROL = 1.
<WCS_API_WAP_UPDFLG>-STXT = 1.
<WCS_API_WAP_UPDFLG>-INGRP = 1.
<WCS_API_WAP_UPDFLG>-IWERK = 1.
<WCS_API_WAP_UPDFLG>-WKCRID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WCS_API_WAP_UPDFLG-BEGRU, sy-vline,
  WA_WCS_API_WAP_UPDFLG-DATEFR, sy-vline,
  WA_WCS_API_WAP_UPDFLG-TIMEFR, sy-vline,
  WA_WCS_API_WAP_UPDFLG-DATETO, sy-vline,
  WA_WCS_API_WAP_UPDFLG-TIMETO, sy-vline,
  WA_WCS_API_WAP_UPDFLG-ANLZU, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WCS_API_WAP_UPDFLG 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_WCS_API_WAP_UPDFLG 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_WCS_API_WAP_UPDFLG INTO WA_WCS_API_WAP_UPDFLG.


*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_WCS_API_WAP_UPDFLG_STR, 
UPDFLG_CONTROL TYPE STRING,
STXT TYPE STRING,
INGRP TYPE STRING,
IWERK TYPE STRING,
WKCRID TYPE STRING,
BEGRU TYPE STRING,
DATEFR TYPE STRING,
TIMEFR TYPE STRING,
DATETO TYPE STRING,
TIMETO TYPE STRING,
ANLZU TYPE STRING,
RCTIME TYPE STRING,
RCUNIT TYPE STRING,
PRIOK TYPE STRING,
TPLNR TYPE STRING,
EQUNR TYPE STRING,
TRAIN TYPE STRING,
BDATE TYPE STRING,
BTIME TYPE STRING,
EDATE TYPE STRING,
ETIME TYPE STRING,
TSDATE TYPE STRING,
TSTIME TYPE STRING,
TFDATE TYPE STRING,
TFTIME TYPE STRING,
ASDATE TYPE STRING,
ASTIME TYPE STRING,
AFDATE TYPE STRING,
AFTIME TYPE STRING,
ETAPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WCS_API_WAP_UPDFLG_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_WCS_API_WAP_UPDFLG_STR-UPDFLG_CONTROL sy-vline 
WA_WCS_API_WAP_UPDFLG_STR-STXT sy-vline 
WA_WCS_API_WAP_UPDFLG_STR-INGRP sy-vline 
WA_WCS_API_WAP_UPDFLG_STR-IWERK sy-vline 
WA_WCS_API_WAP_UPDFLG_STR-WKCRID sy-vline 
WA_WCS_API_WAP_UPDFLG_STR-BEGRU sy-vline 
WA_WCS_API_WAP_UPDFLG_STR-DATEFR sy-vline 
WA_WCS_API_WAP_UPDFLG_STR-TIMEFR sy-vline 
WA_WCS_API_WAP_UPDFLG_STR-DATETO sy-vline 
WA_WCS_API_WAP_UPDFLG_STR-TIMETO sy-vline 
WA_WCS_API_WAP_UPDFLG_STR-ANLZU sy-vline 
WA_WCS_API_WAP_UPDFLG_STR-RCTIME sy-vline 
WA_WCS_API_WAP_UPDFLG_STR-RCUNIT sy-vline 
WA_WCS_API_WAP_UPDFLG_STR-PRIOK sy-vline 
WA_WCS_API_WAP_UPDFLG_STR-TPLNR sy-vline 
WA_WCS_API_WAP_UPDFLG_STR-EQUNR sy-vline 
WA_WCS_API_WAP_UPDFLG_STR-TRAIN sy-vline 
WA_WCS_API_WAP_UPDFLG_STR-BDATE sy-vline 
WA_WCS_API_WAP_UPDFLG_STR-BTIME sy-vline 
WA_WCS_API_WAP_UPDFLG_STR-EDATE sy-vline 
WA_WCS_API_WAP_UPDFLG_STR-ETIME sy-vline 
WA_WCS_API_WAP_UPDFLG_STR-TSDATE sy-vline 
WA_WCS_API_WAP_UPDFLG_STR-TSTIME sy-vline 
WA_WCS_API_WAP_UPDFLG_STR-TFDATE sy-vline 
WA_WCS_API_WAP_UPDFLG_STR-TFTIME sy-vline 
WA_WCS_API_WAP_UPDFLG_STR-ASDATE sy-vline 
WA_WCS_API_WAP_UPDFLG_STR-ASTIME sy-vline 
WA_WCS_API_WAP_UPDFLG_STR-AFDATE sy-vline 
WA_WCS_API_WAP_UPDFLG_STR-AFTIME sy-vline 
WA_WCS_API_WAP_UPDFLG_STR-ETAPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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