ABAP Select data from SAP table DB2QTXA 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 DB2QTXA 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 DB2QTXA. 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 DB2QTXA 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_DB2QTXA TYPE STANDARD TABLE OF DB2QTXA,
      WA_DB2QTXA TYPE DB2QTXA,
      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: <DB2QTXA> TYPE DB2QTXA.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DB2QTXA.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DB2QTXA
  INTO TABLE IT_DB2QTXA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DB2QTXA
*  INTO TABLE @DATA(IT_DB2QTXA2).
*--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_DB2QTXA INDEX 1 INTO DATA(WA_DB2QTXA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DB2QTXA ASSIGNING <DB2QTXA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DB2QTXA>-QTXADEA = 1.
<DB2QTXA>-QTXASLOC = 1.
<DB2QTXA>-QTXATIM = 1.
<DB2QTXA>-QTXALES = 1.
<DB2QTXA>-QTXALEX = 1.

ENDLOOP.

LOOP AT IT_DB2QTXA INTO WA_DB2QTXA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DB2QTXA-QTXANPL, sy-vline,
  WA_DB2QTXA-QTXAFLG1, sy-vline,
  WA_DB2QTXA-QTXARES1, sy-vline,
  WA_DB2QTXA-QTXARLID, sy-vline,
  WA_DB2QTXA-QTXAPREC, sy-vline,
  WA_DB2QTXA-QTXASLMT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DB2QTXA 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_DB2QTXA 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_DB2QTXA INTO WA_DB2QTXA.


*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_DB2QTXA_STR, 
QTXADEA TYPE STRING,
QTXASLOC TYPE STRING,
QTXATIM TYPE STRING,
QTXALES TYPE STRING,
QTXALEX TYPE STRING,
QTXANPL TYPE STRING,
QTXAFLG1 TYPE STRING,
QTXARES1 TYPE STRING,
QTXARLID TYPE STRING,
QTXAPREC TYPE STRING,
QTXASLMT TYPE STRING,
QTXACLMT TYPE STRING,
QTXACHUS TYPE STRING,
QTXASLAT TYPE STRING,
QTXASOTH TYPE STRING,
QTXALOCK TYPE STRING,
QTXALOCKD TYPE STRING,
QTXAUNLK TYPE STRING,
QTXAUNLKD TYPE STRING,
QTXAQRY TYPE STRING,
QTXACHG TYPE STRING,
QTXAIRLM TYPE STRING,
QTXACLNO TYPE STRING,
QTXACLUN TYPE STRING,
QTXADRNO TYPE STRING,
QTXADRUN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DB2QTXA_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_DB2QTXA_STR-QTXADEA sy-vline 
WA_DB2QTXA_STR-QTXASLOC sy-vline 
WA_DB2QTXA_STR-QTXATIM sy-vline 
WA_DB2QTXA_STR-QTXALES sy-vline 
WA_DB2QTXA_STR-QTXALEX sy-vline 
WA_DB2QTXA_STR-QTXANPL sy-vline 
WA_DB2QTXA_STR-QTXAFLG1 sy-vline 
WA_DB2QTXA_STR-QTXARES1 sy-vline 
WA_DB2QTXA_STR-QTXARLID sy-vline 
WA_DB2QTXA_STR-QTXAPREC sy-vline 
WA_DB2QTXA_STR-QTXASLMT sy-vline 
WA_DB2QTXA_STR-QTXACLMT sy-vline 
WA_DB2QTXA_STR-QTXACHUS sy-vline 
WA_DB2QTXA_STR-QTXASLAT sy-vline 
WA_DB2QTXA_STR-QTXASOTH sy-vline 
WA_DB2QTXA_STR-QTXALOCK sy-vline 
WA_DB2QTXA_STR-QTXALOCKD sy-vline 
WA_DB2QTXA_STR-QTXAUNLK sy-vline 
WA_DB2QTXA_STR-QTXAUNLKD sy-vline 
WA_DB2QTXA_STR-QTXAQRY sy-vline 
WA_DB2QTXA_STR-QTXACHG sy-vline 
WA_DB2QTXA_STR-QTXAIRLM sy-vline 
WA_DB2QTXA_STR-QTXACLNO sy-vline 
WA_DB2QTXA_STR-QTXACLUN sy-vline 
WA_DB2QTXA_STR-QTXADRNO sy-vline 
WA_DB2QTXA_STR-QTXADRUN sy-vline      INTO ld_text SEPARATED BY SPACE.

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