ABAP Select data from SAP table QELSINFO into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP QELSINFO 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 QELSINFO. 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 QELSINFO 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_QELSINFO TYPE STANDARD TABLE OF QELSINFO,
      WA_QELSINFO TYPE QELSINFO,
      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: <QELSINFO> TYPE QELSINFO.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QELSINFO
*  INTO TABLE @DATA(IT_QELSINFO2).
*--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_QELSINFO INDEX 1 INTO DATA(WA_QELSINFO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QELSINFO>-PRUEFLOS = 1.
<QELSINFO>-MATNR = 1.
<QELSINFO>-CHARG = 1.
<QELSINFO>-ART = 1.
<QELSINFO>-ENSTEHDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QELSINFO-PASTRTERM, sy-vline,
  WA_QELSINFO-PAENDTERM, sy-vline,
  WA_QELSINFO-AUFNR, sy-vline,
  WA_QELSINFO-LS_KDAUF, sy-vline,
  WA_QELSINFO-KUNNR, sy-vline,
  WA_QELSINFO-LIFNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QELSINFO 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_QELSINFO 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_QELSINFO INTO WA_QELSINFO.


*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 PRUEFLOS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QELSINFO-PRUEFLOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QELSINFO-PRUEFLOS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_QELSINFO-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QELSINFO-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

*Conversion exit GJAHR, internal->external for field MJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_QELSINFO-MJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QELSINFO-MJAHR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field VERWMERKM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QELSINFO-VERWMERKM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QELSINFO-VERWMERKM.
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_QELSINFO_STR, 
PRUEFLOS TYPE STRING,
MATNR TYPE STRING,
CHARG TYPE STRING,
ART TYPE STRING,
ENSTEHDAT TYPE STRING,
PASTRTERM TYPE STRING,
PAENDTERM TYPE STRING,
AUFNR TYPE STRING,
LS_KDAUF TYPE STRING,
KUNNR TYPE STRING,
LIFNR TYPE STRING,
HERSTELLER TYPE STRING,
LICHN TYPE STRING,
MBLNR TYPE STRING,
MJAHR TYPE STRING,
KTEXTMAT TYPE STRING,
KTEXTLOS TYPE STRING,
INSP_DOC_NUMBER TYPE STRING,
PRIO_PUNKTE TYPE STRING,
LAGORTVORG TYPE STRING,
VBEWERTUNG TYPE STRING,
VORSTEUS TYPE STRING,
PMETHODE TYPE STRING,
KURZTEXT TYPE STRING,
VERWMERKM TYPE STRING,
ENTSTEHDAT TYPE STRING,
LAGORTCHRG TYPE STRING,
STAT02 TYPE STRING,
STAT07 TYPE STRING,
STAT13 TYPE STRING,
STAT35 TYPE STRING,
OFFENNLZMK TYPE STRING,
OFFEN_LZMK TYPE STRING,
SLWBEZ TYPE STRING,
AUFPL TYPE STRING,
STAT36 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QELSINFO_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_QELSINFO_STR-PRUEFLOS sy-vline 
WA_QELSINFO_STR-MATNR sy-vline 
WA_QELSINFO_STR-CHARG sy-vline 
WA_QELSINFO_STR-ART sy-vline 
WA_QELSINFO_STR-ENSTEHDAT sy-vline 
WA_QELSINFO_STR-PASTRTERM sy-vline 
WA_QELSINFO_STR-PAENDTERM sy-vline 
WA_QELSINFO_STR-AUFNR sy-vline 
WA_QELSINFO_STR-LS_KDAUF sy-vline 
WA_QELSINFO_STR-KUNNR sy-vline 
WA_QELSINFO_STR-LIFNR sy-vline 
WA_QELSINFO_STR-HERSTELLER sy-vline 
WA_QELSINFO_STR-LICHN sy-vline 
WA_QELSINFO_STR-MBLNR sy-vline 
WA_QELSINFO_STR-MJAHR sy-vline 
WA_QELSINFO_STR-KTEXTMAT sy-vline 
WA_QELSINFO_STR-KTEXTLOS sy-vline 
WA_QELSINFO_STR-INSP_DOC_NUMBER sy-vline 
WA_QELSINFO_STR-PRIO_PUNKTE sy-vline 
WA_QELSINFO_STR-LAGORTVORG sy-vline 
WA_QELSINFO_STR-VBEWERTUNG sy-vline 
WA_QELSINFO_STR-VORSTEUS sy-vline 
WA_QELSINFO_STR-PMETHODE sy-vline 
WA_QELSINFO_STR-KURZTEXT sy-vline 
WA_QELSINFO_STR-VERWMERKM sy-vline 
WA_QELSINFO_STR-ENTSTEHDAT sy-vline 
WA_QELSINFO_STR-LAGORTCHRG sy-vline 
WA_QELSINFO_STR-STAT02 sy-vline 
WA_QELSINFO_STR-STAT07 sy-vline 
WA_QELSINFO_STR-STAT13 sy-vline 
WA_QELSINFO_STR-STAT35 sy-vline 
WA_QELSINFO_STR-OFFENNLZMK sy-vline 
WA_QELSINFO_STR-OFFEN_LZMK sy-vline 
WA_QELSINFO_STR-SLWBEZ sy-vline 
WA_QELSINFO_STR-AUFPL sy-vline 
WA_QELSINFO_STR-STAT36 sy-vline      INTO ld_text SEPARATED BY SPACE.

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