ABAP Select data from SAP table Q3203 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP Q3203 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 Q3203. 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 Q3203 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_Q3203 TYPE STANDARD TABLE OF Q3203,
      WA_Q3203 TYPE Q3203,
      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: <Q3203> TYPE Q3203.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_Q3203.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM Q3203
  INTO TABLE IT_Q3203.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM Q3203
*  INTO TABLE @DATA(IT_Q32032).
*--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_Q3203 INDEX 1 INTO DATA(WA_Q32032).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_Q3203 ASSIGNING <Q3203>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<Q3203>-CWRSY = 1.
<Q3203>-CWRSN = 1.
<Q3203>-CWRSA = 1.
<Q3203>-CWRSB = 1.
<Q3203>-CWRSC = 1.

ENDLOOP.

LOOP AT IT_Q3203 INTO WA_Q3203.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_Q3203-CSUPY, sy-vline,
  WA_Q3203-CSUPN, sy-vline,
  WA_Q3203-CUUPY, sy-vline,
  WA_Q3203-CUUPN, sy-vline,
  WA_Q3203-REPEY, sy-vline,
  WA_Q3203-REPEN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_Q3203 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_Q3203 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_Q3203 INTO WA_Q3203.


*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_Q3203_STR, 
CWRSY TYPE STRING,
CWRSN TYPE STRING,
CWRSA TYPE STRING,
CWRSB TYPE STRING,
CWRSC TYPE STRING,
CSUPY TYPE STRING,
CSUPN TYPE STRING,
CUUPY TYPE STRING,
CUUPN TYPE STRING,
REPEY TYPE STRING,
REPEN TYPE STRING,
CTUPY TYPE STRING,
CTUPN TYPE STRING,
CTULY TYPE STRING,
CTULN TYPE STRING,
WDTY1 TYPE STRING,
WDTY2 TYPE STRING,
AGTEY TYPE STRING,
AGTEN TYPE STRING,
CTERY TYPE STRING,
CTERN TYPE STRING,
CTREY TYPE STRING,
CTREN TYPE STRING,
DNREY TYPE STRING,
DNREN TYPE STRING,
CTRE1 TYPE STRING,
CTRE2 TYPE STRING,
CTRE3 TYPE STRING,
WDINA TYPE STRING,
WDINB TYPE STRING,
EEDIY TYPE STRING,
EEDIN TYPE STRING,
EEOBY TYPE STRING,
EEOBN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_Q3203_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_Q3203_STR-CWRSY sy-vline 
WA_Q3203_STR-CWRSN sy-vline 
WA_Q3203_STR-CWRSA sy-vline 
WA_Q3203_STR-CWRSB sy-vline 
WA_Q3203_STR-CWRSC sy-vline 
WA_Q3203_STR-CSUPY sy-vline 
WA_Q3203_STR-CSUPN sy-vline 
WA_Q3203_STR-CUUPY sy-vline 
WA_Q3203_STR-CUUPN sy-vline 
WA_Q3203_STR-REPEY sy-vline 
WA_Q3203_STR-REPEN sy-vline 
WA_Q3203_STR-CTUPY sy-vline 
WA_Q3203_STR-CTUPN sy-vline 
WA_Q3203_STR-CTULY sy-vline 
WA_Q3203_STR-CTULN sy-vline 
WA_Q3203_STR-WDTY1 sy-vline 
WA_Q3203_STR-WDTY2 sy-vline 
WA_Q3203_STR-AGTEY sy-vline 
WA_Q3203_STR-AGTEN sy-vline 
WA_Q3203_STR-CTERY sy-vline 
WA_Q3203_STR-CTERN sy-vline 
WA_Q3203_STR-CTREY sy-vline 
WA_Q3203_STR-CTREN sy-vline 
WA_Q3203_STR-DNREY sy-vline 
WA_Q3203_STR-DNREN sy-vline 
WA_Q3203_STR-CTRE1 sy-vline 
WA_Q3203_STR-CTRE2 sy-vline 
WA_Q3203_STR-CTRE3 sy-vline 
WA_Q3203_STR-WDINA sy-vline 
WA_Q3203_STR-WDINB sy-vline 
WA_Q3203_STR-EEDIY sy-vline 
WA_Q3203_STR-EEDIN sy-vline 
WA_Q3203_STR-EEOBY sy-vline 
WA_Q3203_STR-EEOBN sy-vline      INTO ld_text SEPARATED BY SPACE.

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