ABAP Select data from SAP table WLBWEXPAG1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WLBWEXPAG1 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 WLBWEXPAG1. 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 WLBWEXPAG1 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_WLBWEXPAG1 TYPE STANDARD TABLE OF WLBWEXPAG1,
      WA_WLBWEXPAG1 TYPE WLBWEXPAG1,
      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: <WLBWEXPAG1> TYPE WLBWEXPAG1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_WLBWEXPAG1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM WLBWEXPAG1
  INTO TABLE IT_WLBWEXPAG1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WLBWEXPAG1
*  INTO TABLE @DATA(IT_WLBWEXPAG12).
*--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_WLBWEXPAG1 INDEX 1 INTO DATA(WA_WLBWEXPAG12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_WLBWEXPAG1 ASSIGNING <WLBWEXPAG1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WLBWEXPAG1>-INFOCUBE = 1.
<WLBWEXPAG1>-NRAGGR = 1.
<WLBWEXPAG1>-AGRTIMTOT = 1.
<WLBWEXPAG1>-AGAVTIMTOT = 1.
<WLBWEXPAG1>-TIMEREAD = 1.

ENDLOOP.

LOOP AT IT_WLBWEXPAG1 INTO WA_WLBWEXPAG1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WLBWEXPAG1-AVGTIMREAD, sy-vline,
  WA_WLBWEXPAG1-TIMEINSERT, sy-vline,
  WA_WLBWEXPAG1-AVGTIMINST, sy-vline,
  WA_WLBWEXPAG1-TIMEINDEX, sy-vline,
  WA_WLBWEXPAG1-AVGTIMINDX, sy-vline,
  WA_WLBWEXPAG1-TIMEDBANLY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WLBWEXPAG1 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_WLBWEXPAG1 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_WLBWEXPAG1 INTO WA_WLBWEXPAG1.


*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_WLBWEXPAG1_STR, 
INFOCUBE TYPE STRING,
NRAGGR TYPE STRING,
AGRTIMTOT TYPE STRING,
AGAVTIMTOT TYPE STRING,
TIMEREAD TYPE STRING,
AVGTIMREAD TYPE STRING,
TIMEINSERT TYPE STRING,
AVGTIMINST TYPE STRING,
TIMEINDEX TYPE STRING,
AVGTIMINDX TYPE STRING,
TIMEDBANLY TYPE STRING,
AVGTIMANLY TYPE STRING,
TIMECONDNS TYPE STRING,
AVGTIMCOND TYPE STRING,
REC_READ TYPE STRING,
AVGRECREAD TYPE STRING,
AVGRDTIREC TYPE STRING,
REC_INSERT TYPE STRING,
AVGRECINS TYPE STRING,
AVGINSTIRC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WLBWEXPAG1_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_WLBWEXPAG1_STR-INFOCUBE sy-vline 
WA_WLBWEXPAG1_STR-NRAGGR sy-vline 
WA_WLBWEXPAG1_STR-AGRTIMTOT sy-vline 
WA_WLBWEXPAG1_STR-AGAVTIMTOT sy-vline 
WA_WLBWEXPAG1_STR-TIMEREAD sy-vline 
WA_WLBWEXPAG1_STR-AVGTIMREAD sy-vline 
WA_WLBWEXPAG1_STR-TIMEINSERT sy-vline 
WA_WLBWEXPAG1_STR-AVGTIMINST sy-vline 
WA_WLBWEXPAG1_STR-TIMEINDEX sy-vline 
WA_WLBWEXPAG1_STR-AVGTIMINDX sy-vline 
WA_WLBWEXPAG1_STR-TIMEDBANLY sy-vline 
WA_WLBWEXPAG1_STR-AVGTIMANLY sy-vline 
WA_WLBWEXPAG1_STR-TIMECONDNS sy-vline 
WA_WLBWEXPAG1_STR-AVGTIMCOND sy-vline 
WA_WLBWEXPAG1_STR-REC_READ sy-vline 
WA_WLBWEXPAG1_STR-AVGRECREAD sy-vline 
WA_WLBWEXPAG1_STR-AVGRDTIREC sy-vline 
WA_WLBWEXPAG1_STR-REC_INSERT sy-vline 
WA_WLBWEXPAG1_STR-AVGRECINS sy-vline 
WA_WLBWEXPAG1_STR-AVGINSTIRC sy-vline      INTO ld_text SEPARATED BY SPACE.

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