ABAP Select data from SAP table WLBWEXTMP1 into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP WLBWEXTMP1 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 WLBWEXTMP1. 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 WLBWEXTMP1 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_WLBWEXTMP1 TYPE STANDARD TABLE OF WLBWEXTMP1,
      WA_WLBWEXTMP1 TYPE WLBWEXTMP1,
      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: <WLBWEXTMP1> TYPE WLBWEXTMP1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_WLBWEXTMP1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM WLBWEXTMP1
  INTO TABLE IT_WLBWEXTMP1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WLBWEXTMP1
*  INTO TABLE @DATA(IT_WLBWEXTMP12).
*--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_WLBWEXTMP1 INDEX 1 INTO DATA(WA_WLBWEXTMP12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_WLBWEXTMP1 ASSIGNING <WLBWEXTMP1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WLBWEXTMP1>-TEMPLATE = 1.
<WLBWEXTMP1>-NRSESSIONS = 1.
<WLBWEXTMP1>-NRQUERY = 1.
<WLBWEXTMP1>-NAVSTEP = 1.
<WLBWEXTMP1>-TIMETOTAL = 1.

ENDLOOP.

LOOP AT IT_WLBWEXTMP1 INTO WA_WLBWEXTMP1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WLBWEXTMP1-AVTOTNAVST, sy-vline,
  WA_WLBWEXTMP1-MEDTOTAL, sy-vline,
  WA_WLBWEXTMP1-TIMEOLAP, sy-vline,
  WA_WLBWEXTMP1-AVOLPNAVST, sy-vline,
  WA_WLBWEXTMP1-TIMEDB, sy-vline,
  WA_WLBWEXTMP1-AVDBNAVST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WLBWEXTMP1 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_WLBWEXTMP1 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_WLBWEXTMP1 INTO WA_WLBWEXTMP1.


*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_WLBWEXTMP1_STR, 
TEMPLATE TYPE STRING,
NRSESSIONS TYPE STRING,
NRQUERY TYPE STRING,
NAVSTEP TYPE STRING,
TIMETOTAL TYPE STRING,
AVTOTNAVST TYPE STRING,
MEDTOTAL TYPE STRING,
TIMEOLAP TYPE STRING,
AVOLPNAVST TYPE STRING,
TIMEDB TYPE STRING,
AVDBNAVST TYPE STRING,
TIMECLIENT TYPE STRING,
AVCLINAVST TYPE STRING,
TIMEPLAN TYPE STRING,
AVPLNNAVST TYPE STRING,
TIME_NA TYPE STRING,
AVNANAVST TYPE STRING,
DBSEL TYPE STRING,
DBTRANSSEL TYPE STRING,
LINECOLOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WLBWEXTMP1_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_WLBWEXTMP1_STR-TEMPLATE sy-vline 
WA_WLBWEXTMP1_STR-NRSESSIONS sy-vline 
WA_WLBWEXTMP1_STR-NRQUERY sy-vline 
WA_WLBWEXTMP1_STR-NAVSTEP sy-vline 
WA_WLBWEXTMP1_STR-TIMETOTAL sy-vline 
WA_WLBWEXTMP1_STR-AVTOTNAVST sy-vline 
WA_WLBWEXTMP1_STR-MEDTOTAL sy-vline 
WA_WLBWEXTMP1_STR-TIMEOLAP sy-vline 
WA_WLBWEXTMP1_STR-AVOLPNAVST sy-vline 
WA_WLBWEXTMP1_STR-TIMEDB sy-vline 
WA_WLBWEXTMP1_STR-AVDBNAVST sy-vline 
WA_WLBWEXTMP1_STR-TIMECLIENT sy-vline 
WA_WLBWEXTMP1_STR-AVCLINAVST sy-vline 
WA_WLBWEXTMP1_STR-TIMEPLAN sy-vline 
WA_WLBWEXTMP1_STR-AVPLNNAVST sy-vline 
WA_WLBWEXTMP1_STR-TIME_NA sy-vline 
WA_WLBWEXTMP1_STR-AVNANAVST sy-vline 
WA_WLBWEXTMP1_STR-DBSEL sy-vline 
WA_WLBWEXTMP1_STR-DBTRANSSEL sy-vline 
WA_WLBWEXTMP1_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.