ABAP Select data from SAP table WLBIDTPRQ0A into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WLBIDTPRQ0A 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 WLBIDTPRQ0A. 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 WLBIDTPRQ0A 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_WLBIDTPRQ0A TYPE STANDARD TABLE OF WLBIDTPRQ0A,
      WA_WLBIDTPRQ0A TYPE WLBIDTPRQ0A,
      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: <WLBIDTPRQ0A> TYPE WLBIDTPRQ0A.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_WLBIDTPRQ0A.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM WLBIDTPRQ0A
  INTO TABLE IT_WLBIDTPRQ0A.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WLBIDTPRQ0A
*  INTO TABLE @DATA(IT_WLBIDTPRQ0A2).
*--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_WLBIDTPRQ0A INDEX 1 INTO DATA(WA_WLBIDTPRQ0A2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_WLBIDTPRQ0A ASSIGNING <WLBIDTPRQ0A>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WLBIDTPRQ0A>-REQUID = 1.
<WLBIDTPRQ0A>-SRC = 1.
<WLBIDTPRQ0A>-SRCSYSTEM = 1.
<WLBIDTPRQ0A>-SRCTP = 1.
<WLBIDTPRQ0A>-TGT = 1.

ENDLOOP.

LOOP AT IT_WLBIDTPRQ0A INTO WA_WLBIDTPRQ0A.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WLBIDTPRQ0A-TGTTP, sy-vline,
  WA_WLBIDTPRQ0A-TIMETOTAL, sy-vline,
  WA_WLBIDTPRQ0A-NUMPACKAGE, sy-vline,
  WA_WLBIDTPRQ0A-TIMETOTCUM, sy-vline,
  WA_WLBIDTPRQ0A-TIMESRCPCT, sy-vline,
  WA_WLBIDTPRQ0A-TIMEERFPCT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WLBIDTPRQ0A 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_WLBIDTPRQ0A 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_WLBIDTPRQ0A INTO WA_WLBIDTPRQ0A.


*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_WLBIDTPRQ0A_STR, 
REQUID TYPE STRING,
SRC TYPE STRING,
SRCSYSTEM TYPE STRING,
SRCTP TYPE STRING,
TGT TYPE STRING,
TGTTP TYPE STRING,
TIMETOTAL TYPE STRING,
NUMPACKAGE TYPE STRING,
TIMETOTCUM TYPE STRING,
TIMESRCPCT TYPE STRING,
TIMEERFPCT TYPE STRING,
TIMETRFPCT TYPE STRING,
TIMETGTPCT TYPE STRING,
TIMESRC TYPE STRING,
TIMEERRF TYPE STRING,
TIMETRFN TYPE STRING,
TIMETGT TYPE STRING,
RECS_MAX TYPE STRING,
SIZE_MAX TYPE STRING,
RECSSRCPH TYPE STRING,
RECSERFPH TYPE STRING,
RECSTRFPH TYPE STRING,
RECSTGTPH TYPE STRING,
RECSSRC TYPE STRING,
RECSERRF_S TYPE STRING,
RECSERRF_F TYPE STRING,
RECSTRFN_S TYPE STRING,
RECSTRFN_F TYPE STRING,
RECSTGT_S TYPE STRING,
RECSTGT_F TYPE STRING,
SIZESRC TYPE STRING,
SIZEERRF_S TYPE STRING,
SIZEERRF_F TYPE STRING,
SIZETRFN_S TYPE STRING,
SIZETRFN_F TYPE STRING,
SIZETGT_S TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WLBIDTPRQ0A_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_WLBIDTPRQ0A_STR-REQUID sy-vline 
WA_WLBIDTPRQ0A_STR-SRC sy-vline 
WA_WLBIDTPRQ0A_STR-SRCSYSTEM sy-vline 
WA_WLBIDTPRQ0A_STR-SRCTP sy-vline 
WA_WLBIDTPRQ0A_STR-TGT sy-vline 
WA_WLBIDTPRQ0A_STR-TGTTP sy-vline 
WA_WLBIDTPRQ0A_STR-TIMETOTAL sy-vline 
WA_WLBIDTPRQ0A_STR-NUMPACKAGE sy-vline 
WA_WLBIDTPRQ0A_STR-TIMETOTCUM sy-vline 
WA_WLBIDTPRQ0A_STR-TIMESRCPCT sy-vline 
WA_WLBIDTPRQ0A_STR-TIMEERFPCT sy-vline 
WA_WLBIDTPRQ0A_STR-TIMETRFPCT sy-vline 
WA_WLBIDTPRQ0A_STR-TIMETGTPCT sy-vline 
WA_WLBIDTPRQ0A_STR-TIMESRC sy-vline 
WA_WLBIDTPRQ0A_STR-TIMEERRF sy-vline 
WA_WLBIDTPRQ0A_STR-TIMETRFN sy-vline 
WA_WLBIDTPRQ0A_STR-TIMETGT sy-vline 
WA_WLBIDTPRQ0A_STR-RECS_MAX sy-vline 
WA_WLBIDTPRQ0A_STR-SIZE_MAX sy-vline 
WA_WLBIDTPRQ0A_STR-RECSSRCPH sy-vline 
WA_WLBIDTPRQ0A_STR-RECSERFPH sy-vline 
WA_WLBIDTPRQ0A_STR-RECSTRFPH sy-vline 
WA_WLBIDTPRQ0A_STR-RECSTGTPH sy-vline 
WA_WLBIDTPRQ0A_STR-RECSSRC sy-vline 
WA_WLBIDTPRQ0A_STR-RECSERRF_S sy-vline 
WA_WLBIDTPRQ0A_STR-RECSERRF_F sy-vline 
WA_WLBIDTPRQ0A_STR-RECSTRFN_S sy-vline 
WA_WLBIDTPRQ0A_STR-RECSTRFN_F sy-vline 
WA_WLBIDTPRQ0A_STR-RECSTGT_S sy-vline 
WA_WLBIDTPRQ0A_STR-RECSTGT_F sy-vline 
WA_WLBIDTPRQ0A_STR-SIZESRC sy-vline 
WA_WLBIDTPRQ0A_STR-SIZEERRF_S sy-vline 
WA_WLBIDTPRQ0A_STR-SIZEERRF_F sy-vline 
WA_WLBIDTPRQ0A_STR-SIZETRFN_S sy-vline 
WA_WLBIDTPRQ0A_STR-SIZETRFN_F sy-vline 
WA_WLBIDTPRQ0A_STR-SIZETGT_S sy-vline      INTO ld_text SEPARATED BY SPACE.

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