ABAP Select data from SAP table LSO_FOLLOWUP_RFC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LSO_FOLLOWUP_RFC
*  INTO TABLE @DATA(IT_LSO_FOLLOWUP_RFC2).
*--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_LSO_FOLLOWUP_RFC INDEX 1 INTO DATA(WA_LSO_FOLLOWUP_RFC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LSO_FOLLOWUP_RFC>-TPARTDOCNO = 1.
<LSO_FOLLOWUP_RFC>-PLVAR = 1.
<LSO_FOLLOWUP_RFC>-EVETY = 1.
<LSO_FOLLOWUP_RFC>-EVEID = 1.
<LSO_FOLLOWUP_RFC>-PATYP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LSO_FOLLOWUP_RFC-PARID, sy-vline,
  WA_LSO_FOLLOWUP_RFC-PARTBEGDA, sy-vline,
  WA_LSO_FOLLOWUP_RFC-PARTENDDA, sy-vline,
  WA_LSO_FOLLOWUP_RFC-CONFIRMED, sy-vline,
  WA_LSO_FOLLOWUP_RFC-PASSED, sy-vline,
  WA_LSO_FOLLOWUP_RFC-FAILED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LSO_FOLLOWUP_RFC 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_LSO_FOLLOWUP_RFC 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_LSO_FOLLOWUP_RFC INTO WA_LSO_FOLLOWUP_RFC.


*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.

*Conversion exit ALPHA, internal->external for field TPARTDOCNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_LSO_FOLLOWUP_RFC-TPARTDOCNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LSO_FOLLOWUP_RFC-TPARTDOCNO.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_LSO_FOLLOWUP_RFC_STR, 
TPARTDOCNO TYPE STRING,
PLVAR TYPE STRING,
EVETY TYPE STRING,
EVEID TYPE STRING,
PATYP TYPE STRING,
PARID TYPE STRING,
PARTBEGDA TYPE STRING,
PARTENDDA TYPE STRING,
CONFIRMED TYPE STRING,
PASSED TYPE STRING,
FAILED TYPE STRING,
FOLLOW_UP TYPE STRING,
FSBEG TYPE STRING,
FSEND TYPE STRING,
EBO_TOTAL TYPE STRING,
EBO_PASSED TYPE STRING,
EBO_PERCENT TYPE STRING,
LU_TOTAL TYPE STRING,
LU_PASSED TYPE STRING,
LU_PERCENT TYPE STRING,
TIMECRS TYPE STRING,
PROGRESS TYPE STRING,
LORULES TYPE STRING,
LOSUCCS TYPE STRING,
EBORULES TYPE STRING,
EBOSUCCS TYPE STRING,
TMP_PASSED TYPE STRING,
ACHIEVEMENT TYPE STRING,
TESTSCORE TYPE STRING,
TESTSCOREMAX TYPE STRING,
TESTSCOREPERC TYPE STRING,
TESTSCORECUTOFF TYPE STRING,
DELIMIT_PART TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LSO_FOLLOWUP_RFC_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_LSO_FOLLOWUP_RFC_STR-TPARTDOCNO sy-vline 
WA_LSO_FOLLOWUP_RFC_STR-PLVAR sy-vline 
WA_LSO_FOLLOWUP_RFC_STR-EVETY sy-vline 
WA_LSO_FOLLOWUP_RFC_STR-EVEID sy-vline 
WA_LSO_FOLLOWUP_RFC_STR-PATYP sy-vline 
WA_LSO_FOLLOWUP_RFC_STR-PARID sy-vline 
WA_LSO_FOLLOWUP_RFC_STR-PARTBEGDA sy-vline 
WA_LSO_FOLLOWUP_RFC_STR-PARTENDDA sy-vline 
WA_LSO_FOLLOWUP_RFC_STR-CONFIRMED sy-vline 
WA_LSO_FOLLOWUP_RFC_STR-PASSED sy-vline 
WA_LSO_FOLLOWUP_RFC_STR-FAILED sy-vline 
WA_LSO_FOLLOWUP_RFC_STR-FOLLOW_UP sy-vline 
WA_LSO_FOLLOWUP_RFC_STR-FSBEG sy-vline 
WA_LSO_FOLLOWUP_RFC_STR-FSEND sy-vline 
WA_LSO_FOLLOWUP_RFC_STR-EBO_TOTAL sy-vline 
WA_LSO_FOLLOWUP_RFC_STR-EBO_PASSED sy-vline 
WA_LSO_FOLLOWUP_RFC_STR-EBO_PERCENT sy-vline 
WA_LSO_FOLLOWUP_RFC_STR-LU_TOTAL sy-vline 
WA_LSO_FOLLOWUP_RFC_STR-LU_PASSED sy-vline 
WA_LSO_FOLLOWUP_RFC_STR-LU_PERCENT sy-vline 
WA_LSO_FOLLOWUP_RFC_STR-TIMECRS sy-vline 
WA_LSO_FOLLOWUP_RFC_STR-PROGRESS sy-vline 
WA_LSO_FOLLOWUP_RFC_STR-LORULES sy-vline 
WA_LSO_FOLLOWUP_RFC_STR-LOSUCCS sy-vline 
WA_LSO_FOLLOWUP_RFC_STR-EBORULES sy-vline 
WA_LSO_FOLLOWUP_RFC_STR-EBOSUCCS sy-vline 
WA_LSO_FOLLOWUP_RFC_STR-TMP_PASSED sy-vline 
WA_LSO_FOLLOWUP_RFC_STR-ACHIEVEMENT sy-vline 
WA_LSO_FOLLOWUP_RFC_STR-TESTSCORE sy-vline 
WA_LSO_FOLLOWUP_RFC_STR-TESTSCOREMAX sy-vline 
WA_LSO_FOLLOWUP_RFC_STR-TESTSCOREPERC sy-vline 
WA_LSO_FOLLOWUP_RFC_STR-TESTSCORECUTOFF sy-vline 
WA_LSO_FOLLOWUP_RFC_STR-DELIMIT_PART sy-vline      INTO ld_text SEPARATED BY SPACE.

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