ABAP Select data from SAP table WLBWEXPQRY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WLBWEXPQRY
*  INTO TABLE @DATA(IT_WLBWEXPQRY2).
*--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_WLBWEXPQRY INDEX 1 INTO DATA(WA_WLBWEXPQRY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WLBWEXPQRY>-TEMPLATE = 1.
<WLBWEXPQRY>-INFOCUBE = 1.
<WLBWEXPQRY>-IPROVTYPE = 1.
<WLBWEXPQRY>-QUERYID = 1.
<WLBWEXPQRY>-NAVSTEP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WLBWEXPQRY-TIMETOTAL, sy-vline,
  WA_WLBWEXPQRY-AVTOTNAVST, sy-vline,
  WA_WLBWEXPQRY-MEDTOTAL, sy-vline,
  WA_WLBWEXPQRY-TIMEOLAP, sy-vline,
  WA_WLBWEXPQRY-PCTTIMOLAP, sy-vline,
  WA_WLBWEXPQRY-AVOLPNAVST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WLBWEXPQRY 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_WLBWEXPQRY 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_WLBWEXPQRY INTO WA_WLBWEXPQRY.


*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_WLBWEXPQRY_STR, 
TEMPLATE TYPE STRING,
INFOCUBE TYPE STRING,
IPROVTYPE TYPE STRING,
QUERYID TYPE STRING,
NAVSTEP TYPE STRING,
TIMETOTAL TYPE STRING,
AVTOTNAVST TYPE STRING,
MEDTOTAL TYPE STRING,
TIMEOLAP TYPE STRING,
PCTTIMOLAP TYPE STRING,
AVOLPNAVST TYPE STRING,
TIMEDB TYPE STRING,
PCTTIMEDB TYPE STRING,
AVDBNAVST TYPE STRING,
TIMECLIENT TYPE STRING,
PCTTIMECLI TYPE STRING,
AVCLINAVST TYPE STRING,
TIMEPLAN TYPE STRING,
PCTTIMPLAN TYPE STRING,
AVPLNNAVST TYPE STRING,
TIME_NA TYPE STRING,
PCTTIMNA TYPE STRING,
AVNANAVST TYPE STRING,
DBSEL TYPE STRING,
DBTRANS TYPE STRING,
DBTRANSSEL TYPE STRING,
DBTIMSEL TYPE STRING,
DISPLEVEL1 TYPE STRING,
DISPLEVEL2 TYPE STRING,
OLAPCACHE TYPE STRING,
LINECOLOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WLBWEXPQRY_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_WLBWEXPQRY_STR-TEMPLATE sy-vline 
WA_WLBWEXPQRY_STR-INFOCUBE sy-vline 
WA_WLBWEXPQRY_STR-IPROVTYPE sy-vline 
WA_WLBWEXPQRY_STR-QUERYID sy-vline 
WA_WLBWEXPQRY_STR-NAVSTEP sy-vline 
WA_WLBWEXPQRY_STR-TIMETOTAL sy-vline 
WA_WLBWEXPQRY_STR-AVTOTNAVST sy-vline 
WA_WLBWEXPQRY_STR-MEDTOTAL sy-vline 
WA_WLBWEXPQRY_STR-TIMEOLAP sy-vline 
WA_WLBWEXPQRY_STR-PCTTIMOLAP sy-vline 
WA_WLBWEXPQRY_STR-AVOLPNAVST sy-vline 
WA_WLBWEXPQRY_STR-TIMEDB sy-vline 
WA_WLBWEXPQRY_STR-PCTTIMEDB sy-vline 
WA_WLBWEXPQRY_STR-AVDBNAVST sy-vline 
WA_WLBWEXPQRY_STR-TIMECLIENT sy-vline 
WA_WLBWEXPQRY_STR-PCTTIMECLI sy-vline 
WA_WLBWEXPQRY_STR-AVCLINAVST sy-vline 
WA_WLBWEXPQRY_STR-TIMEPLAN sy-vline 
WA_WLBWEXPQRY_STR-PCTTIMPLAN sy-vline 
WA_WLBWEXPQRY_STR-AVPLNNAVST sy-vline 
WA_WLBWEXPQRY_STR-TIME_NA sy-vline 
WA_WLBWEXPQRY_STR-PCTTIMNA sy-vline 
WA_WLBWEXPQRY_STR-AVNANAVST sy-vline 
WA_WLBWEXPQRY_STR-DBSEL sy-vline 
WA_WLBWEXPQRY_STR-DBTRANS sy-vline 
WA_WLBWEXPQRY_STR-DBTRANSSEL sy-vline 
WA_WLBWEXPQRY_STR-DBTIMSEL sy-vline 
WA_WLBWEXPQRY_STR-DISPLEVEL1 sy-vline 
WA_WLBWEXPQRY_STR-DISPLEVEL2 sy-vline 
WA_WLBWEXPQRY_STR-OLAPCACHE sy-vline 
WA_WLBWEXPQRY_STR-LINECOLOR sy-vline      INTO ld_text SEPARATED BY SPACE.

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