ABAP Select data from SAP table Q3271 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP Q3271 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 Q3271. 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 Q3271 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_Q3271 TYPE STANDARD TABLE OF Q3271,
      WA_Q3271 TYPE Q3271,
      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: <Q3271> TYPE Q3271.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_Q3271.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM Q3271
  INTO TABLE IT_Q3271.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM Q3271
*  INTO TABLE @DATA(IT_Q32712).
*--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_Q3271 INDEX 1 INTO DATA(WA_Q32712).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_Q3271 ASSIGNING <Q3271>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<Q3271>-SUBTY = 1.
<Q3271>-TYTXT = 1.
<Q3271>-AGTXT = 1.
<Q3271>-ADTXT = 1.
<Q3271>-INTXT = 1.

ENDLOOP.

LOOP AT IT_Q3271 INTO WA_Q3271.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_Q3271-BEGDA, sy-vline,
  WA_Q3271-ENDDA, sy-vline,
  WA_Q3271-PYTXT, sy-vline,
  WA_Q3271-RETXT, sy-vline,
  WA_Q3271-LGA01, sy-vline,
  WA_Q3271-ANZ01, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_Q3271 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_Q3271 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_Q3271 INTO WA_Q3271.


*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_Q3271_STR, 
SUBTY TYPE STRING,
TYTXT TYPE STRING,
AGTXT TYPE STRING,
ADTXT TYPE STRING,
INTXT TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
PYTXT TYPE STRING,
RETXT TYPE STRING,
LGA01 TYPE STRING,
ANZ01 TYPE STRING,
RAT01 TYPE STRING,
ZEI01 TYPE STRING,
BET01 TYPE STRING,
LGA02 TYPE STRING,
ANZ02 TYPE STRING,
RAT02 TYPE STRING,
ZEI02 TYPE STRING,
BET02 TYPE STRING,
LGA03 TYPE STRING,
ANZ03 TYPE STRING,
RAT03 TYPE STRING,
ZEI03 TYPE STRING,
BET03 TYPE STRING,
LGA04 TYPE STRING,
ANZ04 TYPE STRING,
RAT04 TYPE STRING,
ZEI04 TYPE STRING,
BET04 TYPE STRING,
LGA05 TYPE STRING,
ANZ05 TYPE STRING,
RAT05 TYPE STRING,
ZEI05 TYPE STRING,
BET05 TYPE STRING,
LGA06 TYPE STRING,
ANZ06 TYPE STRING,
RAT06 TYPE STRING,
ZEI06 TYPE STRING,
BET06 TYPE STRING,
LGA07 TYPE STRING,
ANZ07 TYPE STRING,
RAT07 TYPE STRING,
ZEI07 TYPE STRING,
BET07 TYPE STRING,
LGA08 TYPE STRING,
ANZ08 TYPE STRING,
RAT08 TYPE STRING,
ZEI08 TYPE STRING,
BET08 TYPE STRING,
LGA09 TYPE STRING,
ANZ09 TYPE STRING,
RAT09 TYPE STRING,
ZEI09 TYPE STRING,
BET09 TYPE STRING,
LGA10 TYPE STRING,
ANZ10 TYPE STRING,
RAT10 TYPE STRING,
ZEI10 TYPE STRING,
BET10 TYPE STRING,
WAERS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_Q3271_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_Q3271_STR-SUBTY sy-vline 
WA_Q3271_STR-TYTXT sy-vline 
WA_Q3271_STR-AGTXT sy-vline 
WA_Q3271_STR-ADTXT sy-vline 
WA_Q3271_STR-INTXT sy-vline 
WA_Q3271_STR-BEGDA sy-vline 
WA_Q3271_STR-ENDDA sy-vline 
WA_Q3271_STR-PYTXT sy-vline 
WA_Q3271_STR-RETXT sy-vline 
WA_Q3271_STR-LGA01 sy-vline 
WA_Q3271_STR-ANZ01 sy-vline 
WA_Q3271_STR-RAT01 sy-vline 
WA_Q3271_STR-ZEI01 sy-vline 
WA_Q3271_STR-BET01 sy-vline 
WA_Q3271_STR-LGA02 sy-vline 
WA_Q3271_STR-ANZ02 sy-vline 
WA_Q3271_STR-RAT02 sy-vline 
WA_Q3271_STR-ZEI02 sy-vline 
WA_Q3271_STR-BET02 sy-vline 
WA_Q3271_STR-LGA03 sy-vline 
WA_Q3271_STR-ANZ03 sy-vline 
WA_Q3271_STR-RAT03 sy-vline 
WA_Q3271_STR-ZEI03 sy-vline 
WA_Q3271_STR-BET03 sy-vline 
WA_Q3271_STR-LGA04 sy-vline 
WA_Q3271_STR-ANZ04 sy-vline 
WA_Q3271_STR-RAT04 sy-vline 
WA_Q3271_STR-ZEI04 sy-vline 
WA_Q3271_STR-BET04 sy-vline 
WA_Q3271_STR-LGA05 sy-vline 
WA_Q3271_STR-ANZ05 sy-vline 
WA_Q3271_STR-RAT05 sy-vline 
WA_Q3271_STR-ZEI05 sy-vline 
WA_Q3271_STR-BET05 sy-vline 
WA_Q3271_STR-LGA06 sy-vline 
WA_Q3271_STR-ANZ06 sy-vline 
WA_Q3271_STR-RAT06 sy-vline 
WA_Q3271_STR-ZEI06 sy-vline 
WA_Q3271_STR-BET06 sy-vline 
WA_Q3271_STR-LGA07 sy-vline 
WA_Q3271_STR-ANZ07 sy-vline 
WA_Q3271_STR-RAT07 sy-vline 
WA_Q3271_STR-ZEI07 sy-vline 
WA_Q3271_STR-BET07 sy-vline 
WA_Q3271_STR-LGA08 sy-vline 
WA_Q3271_STR-ANZ08 sy-vline 
WA_Q3271_STR-RAT08 sy-vline 
WA_Q3271_STR-ZEI08 sy-vline 
WA_Q3271_STR-BET08 sy-vline 
WA_Q3271_STR-LGA09 sy-vline 
WA_Q3271_STR-ANZ09 sy-vline 
WA_Q3271_STR-RAT09 sy-vline 
WA_Q3271_STR-ZEI09 sy-vline 
WA_Q3271_STR-BET09 sy-vline 
WA_Q3271_STR-LGA10 sy-vline 
WA_Q3271_STR-ANZ10 sy-vline 
WA_Q3271_STR-RAT10 sy-vline 
WA_Q3271_STR-ZEI10 sy-vline 
WA_Q3271_STR-BET10 sy-vline 
WA_Q3271_STR-WAERS sy-vline      INTO ld_text SEPARATED BY SPACE.

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