ABAP Select data from SAP table SLS_QGEN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SLS_QGEN
*  INTO TABLE @DATA(IT_SLS_QGEN2).
*--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_SLS_QGEN INDEX 1 INTO DATA(WA_SLS_QGEN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SLS_QGEN>-TRANSFER = 1.
<SLS_QGEN>-REASON = 1.
<SLS_QGEN>-ALLSIG = 1.
<SLS_QGEN>-EVID = 1.
<SLS_QGEN>-EVSHT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SLS_QGEN-EVSTX, sy-vline,
  WA_SLS_QGEN-EVBEG, sy-vline,
  WA_SLS_QGEN-EVBEGF, sy-vline,
  WA_SLS_QGEN-EVEND, sy-vline,
  WA_SLS_QGEN-EVENDF, sy-vline,
  WA_SLS_QGEN-LOCID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SLS_QGEN 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_SLS_QGEN 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_SLS_QGEN INTO WA_SLS_QGEN.


*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_SLS_QGEN_STR, 
TRANSFER TYPE STRING,
REASON TYPE STRING,
ALLSIG TYPE STRING,
EVID TYPE STRING,
EVSHT TYPE STRING,
EVSTX TYPE STRING,
EVBEG TYPE STRING,
EVBEGF TYPE STRING,
EVEND TYPE STRING,
EVENDF TYPE STRING,
LOCID TYPE STRING,
LOCSH TYPE STRING,
LOCTX TYPE STRING,
EVTLI TYPE STRING,
EVCFLAG TYPE STRING,
TETYPID TYPE STRING,
TETYPSH TYPE STRING,
TETLI TYPE STRING,
ATPETID TYPE STRING,
ATTLI TYPE STRING,
ATNBOOK TYPE STRING,
ATBOOK TYPE STRING,
ATPEDIT TYPE STRING,
ATERROR TYPE STRING,
ATDELET TYPE STRING,
ATRFLAG TYPE STRING,
ATTRANS TYPE STRING,
ATCFLAG TYPE STRING,
PATYP TYPE STRING,
PARID TYPE STRING,
PASHORT TYPE STRING,
PANAME TYPE STRING,
PABEGDA TYPE STRING,
PAENDDA TYPE STRING,
REPER TYPE STRING,
REPT TYPE STRING,
REPASS TYPE STRING,
REPAX TYPE STRING,
NO_TEM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SLS_QGEN_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_SLS_QGEN_STR-TRANSFER sy-vline 
WA_SLS_QGEN_STR-REASON sy-vline 
WA_SLS_QGEN_STR-ALLSIG sy-vline 
WA_SLS_QGEN_STR-EVID sy-vline 
WA_SLS_QGEN_STR-EVSHT sy-vline 
WA_SLS_QGEN_STR-EVSTX sy-vline 
WA_SLS_QGEN_STR-EVBEG sy-vline 
WA_SLS_QGEN_STR-EVBEGF sy-vline 
WA_SLS_QGEN_STR-EVEND sy-vline 
WA_SLS_QGEN_STR-EVENDF sy-vline 
WA_SLS_QGEN_STR-LOCID sy-vline 
WA_SLS_QGEN_STR-LOCSH sy-vline 
WA_SLS_QGEN_STR-LOCTX sy-vline 
WA_SLS_QGEN_STR-EVTLI sy-vline 
WA_SLS_QGEN_STR-EVCFLAG sy-vline 
WA_SLS_QGEN_STR-TETYPID sy-vline 
WA_SLS_QGEN_STR-TETYPSH sy-vline 
WA_SLS_QGEN_STR-TETLI sy-vline 
WA_SLS_QGEN_STR-ATPETID sy-vline 
WA_SLS_QGEN_STR-ATTLI sy-vline 
WA_SLS_QGEN_STR-ATNBOOK sy-vline 
WA_SLS_QGEN_STR-ATBOOK sy-vline 
WA_SLS_QGEN_STR-ATPEDIT sy-vline 
WA_SLS_QGEN_STR-ATERROR sy-vline 
WA_SLS_QGEN_STR-ATDELET sy-vline 
WA_SLS_QGEN_STR-ATRFLAG sy-vline 
WA_SLS_QGEN_STR-ATTRANS sy-vline 
WA_SLS_QGEN_STR-ATCFLAG sy-vline 
WA_SLS_QGEN_STR-PATYP sy-vline 
WA_SLS_QGEN_STR-PARID sy-vline 
WA_SLS_QGEN_STR-PASHORT sy-vline 
WA_SLS_QGEN_STR-PANAME sy-vline 
WA_SLS_QGEN_STR-PABEGDA sy-vline 
WA_SLS_QGEN_STR-PAENDDA sy-vline 
WA_SLS_QGEN_STR-REPER sy-vline 
WA_SLS_QGEN_STR-REPT sy-vline 
WA_SLS_QGEN_STR-REPASS sy-vline 
WA_SLS_QGEN_STR-REPAX sy-vline 
WA_SLS_QGEN_STR-NO_TEM sy-vline      INTO ld_text SEPARATED BY SPACE.

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