ABAP Select data from SAP table Q2052 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP Q2052 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 Q2052. 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 Q2052 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_Q2052 TYPE STANDARD TABLE OF Q2052,
      WA_Q2052 TYPE Q2052,
      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: <Q2052> TYPE Q2052.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_Q2052.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM Q2052
  INTO TABLE IT_Q2052.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM Q2052
*  INTO TABLE @DATA(IT_Q20522).
*--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_Q2052 INDEX 1 INTO DATA(WA_Q20522).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_Q2052 ASSIGNING <Q2052>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<Q2052>-LINE1 = 1.
<Q2052>-LINE2 = 1.
<Q2052>-LINE3 = 1.
<Q2052>-BEGDA = 1.
<Q2052>-ENDDA = 1.

ENDLOOP.

LOOP AT IT_Q2052 INTO WA_Q2052.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_Q2052-WEEKN, sy-vline,
  WA_Q2052-BEGWK, sy-vline,
  WA_Q2052-SLASH, sy-vline,
  WA_Q2052-ENDWK, sy-vline,
  WA_Q2052-HPLWK, sy-vline,
  WA_Q2052-HABWK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_Q2052 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_Q2052 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_Q2052 INTO WA_Q2052.


*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_Q2052_STR, 
LINE1 TYPE STRING,
LINE2 TYPE STRING,
LINE3 TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
WEEKN TYPE STRING,
BEGWK TYPE STRING,
SLASH TYPE STRING,
ENDWK TYPE STRING,
HPLWK TYPE STRING,
HABWK TYPE STRING,
HATWK TYPE STRING,
HRCWK TYPE STRING,
HRMWK TYPE STRING,
DNR01 TYPE STRING,
DWK01 TYPE STRING,
DAT01 TYPE STRING,
DWS01 TYPE STRING,
DVR01 TYPE STRING,
HPL01 TYPE STRING,
HAB01 TYPE STRING,
HAT01 TYPE STRING,
HRC01 TYPE STRING,
HRM01 TYPE STRING,
DNR02 TYPE STRING,
DWK02 TYPE STRING,
DAT02 TYPE STRING,
DWS02 TYPE STRING,
DVR02 TYPE STRING,
HPL02 TYPE STRING,
HAB02 TYPE STRING,
HAT02 TYPE STRING,
HRC02 TYPE STRING,
HRM02 TYPE STRING,
DNR03 TYPE STRING,
DWK03 TYPE STRING,
DAT03 TYPE STRING,
DWS03 TYPE STRING,
DVR03 TYPE STRING,
HPL03 TYPE STRING,
HAB03 TYPE STRING,
HAT03 TYPE STRING,
HRC03 TYPE STRING,
HRM03 TYPE STRING,
DNR04 TYPE STRING,
DWK04 TYPE STRING,
DAT04 TYPE STRING,
DWS04 TYPE STRING,
DVR04 TYPE STRING,
HPL04 TYPE STRING,
HAB04 TYPE STRING,
HAT04 TYPE STRING,
HRC04 TYPE STRING,
HRM04 TYPE STRING,
DNR05 TYPE STRING,
DWK05 TYPE STRING,
DAT05 TYPE STRING,
DWS05 TYPE STRING,
DVR05 TYPE STRING,
HPL05 TYPE STRING,
HAB05 TYPE STRING,
HAT05 TYPE STRING,
HRC05 TYPE STRING,
HRM05 TYPE STRING,
DNR06 TYPE STRING,
DWK06 TYPE STRING,
DAT06 TYPE STRING,
DWS06 TYPE STRING,
DVR06 TYPE STRING,
HPL06 TYPE STRING,
HAB06 TYPE STRING,
HAT06 TYPE STRING,
HRC06 TYPE STRING,
HRM06 TYPE STRING,
DNR07 TYPE STRING,
DWK07 TYPE STRING,
DAT07 TYPE STRING,
DWS07 TYPE STRING,
DVR07 TYPE STRING,
HPL07 TYPE STRING,
HAB07 TYPE STRING,
HAT07 TYPE STRING,
HRC07 TYPE STRING,
HRM07 TYPE STRING,
DAYNR TYPE STRING,
DAYWK TYPE STRING,
RECNR TYPE STRING,
ERRFL TYPE STRING,
AWTXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_Q2052_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_Q2052_STR-LINE1 sy-vline 
WA_Q2052_STR-LINE2 sy-vline 
WA_Q2052_STR-LINE3 sy-vline 
WA_Q2052_STR-BEGDA sy-vline 
WA_Q2052_STR-ENDDA sy-vline 
WA_Q2052_STR-WEEKN sy-vline 
WA_Q2052_STR-BEGWK sy-vline 
WA_Q2052_STR-SLASH sy-vline 
WA_Q2052_STR-ENDWK sy-vline 
WA_Q2052_STR-HPLWK sy-vline 
WA_Q2052_STR-HABWK sy-vline 
WA_Q2052_STR-HATWK sy-vline 
WA_Q2052_STR-HRCWK sy-vline 
WA_Q2052_STR-HRMWK sy-vline 
WA_Q2052_STR-DNR01 sy-vline 
WA_Q2052_STR-DWK01 sy-vline 
WA_Q2052_STR-DAT01 sy-vline 
WA_Q2052_STR-DWS01 sy-vline 
WA_Q2052_STR-DVR01 sy-vline 
WA_Q2052_STR-HPL01 sy-vline 
WA_Q2052_STR-HAB01 sy-vline 
WA_Q2052_STR-HAT01 sy-vline 
WA_Q2052_STR-HRC01 sy-vline 
WA_Q2052_STR-HRM01 sy-vline 
WA_Q2052_STR-DNR02 sy-vline 
WA_Q2052_STR-DWK02 sy-vline 
WA_Q2052_STR-DAT02 sy-vline 
WA_Q2052_STR-DWS02 sy-vline 
WA_Q2052_STR-DVR02 sy-vline 
WA_Q2052_STR-HPL02 sy-vline 
WA_Q2052_STR-HAB02 sy-vline 
WA_Q2052_STR-HAT02 sy-vline 
WA_Q2052_STR-HRC02 sy-vline 
WA_Q2052_STR-HRM02 sy-vline 
WA_Q2052_STR-DNR03 sy-vline 
WA_Q2052_STR-DWK03 sy-vline 
WA_Q2052_STR-DAT03 sy-vline 
WA_Q2052_STR-DWS03 sy-vline 
WA_Q2052_STR-DVR03 sy-vline 
WA_Q2052_STR-HPL03 sy-vline 
WA_Q2052_STR-HAB03 sy-vline 
WA_Q2052_STR-HAT03 sy-vline 
WA_Q2052_STR-HRC03 sy-vline 
WA_Q2052_STR-HRM03 sy-vline 
WA_Q2052_STR-DNR04 sy-vline 
WA_Q2052_STR-DWK04 sy-vline 
WA_Q2052_STR-DAT04 sy-vline 
WA_Q2052_STR-DWS04 sy-vline 
WA_Q2052_STR-DVR04 sy-vline 
WA_Q2052_STR-HPL04 sy-vline 
WA_Q2052_STR-HAB04 sy-vline 
WA_Q2052_STR-HAT04 sy-vline 
WA_Q2052_STR-HRC04 sy-vline 
WA_Q2052_STR-HRM04 sy-vline 
WA_Q2052_STR-DNR05 sy-vline 
WA_Q2052_STR-DWK05 sy-vline 
WA_Q2052_STR-DAT05 sy-vline 
WA_Q2052_STR-DWS05 sy-vline 
WA_Q2052_STR-DVR05 sy-vline 
WA_Q2052_STR-HPL05 sy-vline 
WA_Q2052_STR-HAB05 sy-vline 
WA_Q2052_STR-HAT05 sy-vline 
WA_Q2052_STR-HRC05 sy-vline 
WA_Q2052_STR-HRM05 sy-vline 
WA_Q2052_STR-DNR06 sy-vline 
WA_Q2052_STR-DWK06 sy-vline 
WA_Q2052_STR-DAT06 sy-vline 
WA_Q2052_STR-DWS06 sy-vline 
WA_Q2052_STR-DVR06 sy-vline 
WA_Q2052_STR-HPL06 sy-vline 
WA_Q2052_STR-HAB06 sy-vline 
WA_Q2052_STR-HAT06 sy-vline 
WA_Q2052_STR-HRC06 sy-vline 
WA_Q2052_STR-HRM06 sy-vline 
WA_Q2052_STR-DNR07 sy-vline 
WA_Q2052_STR-DWK07 sy-vline 
WA_Q2052_STR-DAT07 sy-vline 
WA_Q2052_STR-DWS07 sy-vline 
WA_Q2052_STR-DVR07 sy-vline 
WA_Q2052_STR-HPL07 sy-vline 
WA_Q2052_STR-HAB07 sy-vline 
WA_Q2052_STR-HAT07 sy-vline 
WA_Q2052_STR-HRC07 sy-vline 
WA_Q2052_STR-HRM07 sy-vline 
WA_Q2052_STR-DAYNR sy-vline 
WA_Q2052_STR-DAYWK sy-vline 
WA_Q2052_STR-RECNR sy-vline 
WA_Q2052_STR-ERRFL sy-vline 
WA_Q2052_STR-AWTXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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