ABAP Select data from SAP table Q1702 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP Q1702 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 Q1702. 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 Q1702 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_Q1702 TYPE STANDARD TABLE OF Q1702,
      WA_Q1702 TYPE Q1702,
      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: <Q1702> TYPE Q1702.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_Q1702.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM Q1702
  INTO TABLE IT_Q1702.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM Q1702
*  INTO TABLE @DATA(IT_Q17022).
*--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_Q1702 INDEX 1 INTO DATA(WA_Q17022).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_Q1702 ASSIGNING <Q1702>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<Q1702>-SPTXT = 1.
<Q1702>-FTEXT = 1.
<Q1702>-LANDX = 1.
<Q1702>-GESC1 = 1.
<Q1702>-GESC2 = 1.

ENDLOOP.

LOOP AT IT_Q1702 INTO WA_Q1702.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_Q1702-GESC3, sy-vline,
  WA_Q1702-GESCHT, sy-vline,
  WA_Q1702-NATIOT, sy-vline,
  WA_Q1702-NATI2T, sy-vline,
  WA_Q1702-NATI3T, sy-vline,
  WA_Q1702-GBDEPT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_Q1702 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_Q1702 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_Q1702 INTO WA_Q1702.


*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_Q1702_STR, 
SPTXT TYPE STRING,
FTEXT TYPE STRING,
LANDX TYPE STRING,
GESC1 TYPE STRING,
GESC2 TYPE STRING,
GESC3 TYPE STRING,
GESCHT TYPE STRING,
NATIOT TYPE STRING,
NATI2T TYPE STRING,
NATI3T TYPE STRING,
GBDEPT TYPE STRING,
ANRLT TYPE STRING,
GBNATT TYPE STRING,
TITELT TYPE STRING,
VORSWT TYPE STRING,
NAMZUT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_Q1702_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_Q1702_STR-SPTXT sy-vline 
WA_Q1702_STR-FTEXT sy-vline 
WA_Q1702_STR-LANDX sy-vline 
WA_Q1702_STR-GESC1 sy-vline 
WA_Q1702_STR-GESC2 sy-vline 
WA_Q1702_STR-GESC3 sy-vline 
WA_Q1702_STR-GESCHT sy-vline 
WA_Q1702_STR-NATIOT sy-vline 
WA_Q1702_STR-NATI2T sy-vline 
WA_Q1702_STR-NATI3T sy-vline 
WA_Q1702_STR-GBDEPT sy-vline 
WA_Q1702_STR-ANRLT sy-vline 
WA_Q1702_STR-GBNATT sy-vline 
WA_Q1702_STR-TITELT sy-vline 
WA_Q1702_STR-VORSWT sy-vline 
WA_Q1702_STR-NAMZUT sy-vline      INTO ld_text SEPARATED BY SPACE.

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