ABAP Select data from SAP table Q1001 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP Q1001 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 Q1001. 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 Q1001 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_Q1001 TYPE STANDARD TABLE OF Q1001,
      WA_Q1001 TYPE Q1001,
      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: <Q1001> TYPE Q1001.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_Q1001.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM Q1001
  INTO TABLE IT_Q1001.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM Q1001
*  INTO TABLE @DATA(IT_Q10012).
*--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_Q1001 INDEX 1 INTO DATA(WA_Q10012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_Q1001 ASSIGNING <Q1001>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<Q1001>-P1001STEXT = 1.
<Q1001>-DAYS = 1.
<Q1001>-TOTAL = 1.
<Q1001>-RESID = 1.
<Q1001>-ZUSATZ = 1.

ENDLOOP.

LOOP AT IT_Q1001 INTO WA_Q1001.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_Q1001-RELATEXT, sy-vline,
  WA_Q1001-WICHT, sy-vline,
  WA_Q1001-SOTEX, sy-vline,
  WA_Q1001-VERKTXT, sy-vline,
  WA_Q1001-PPSCLAS, sy-vline,
  WA_Q1001-PROZENT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_Q1001 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_Q1001 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_Q1001 INTO WA_Q1001.


*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_Q1001_STR, 
P1001STEXT TYPE STRING,
DAYS TYPE STRING,
TOTAL TYPE STRING,
RESID TYPE STRING,
ZUSATZ TYPE STRING,
RELATEXT TYPE STRING,
WICHT TYPE STRING,
SOTEX TYPE STRING,
VERKTXT TYPE STRING,
PPSCLAS TYPE STRING,
PROZENT TYPE STRING,
VERKOBJ TYPE STRING,
SABLF_TEXT TYPE STRING,
RESTY_TEXT TYPE STRING,
RESTYSHORT TYPE STRING,
HORA TYPE STRING,
RRELSCLAS TYPE STRING,
RELATKEY TYPE STRING,
OTRESTY TYPE STRING,
BELTIME TYPE STRING,
BEDSPEC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_Q1001_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_Q1001_STR-P1001STEXT sy-vline 
WA_Q1001_STR-DAYS sy-vline 
WA_Q1001_STR-TOTAL sy-vline 
WA_Q1001_STR-RESID sy-vline 
WA_Q1001_STR-ZUSATZ sy-vline 
WA_Q1001_STR-RELATEXT sy-vline 
WA_Q1001_STR-WICHT sy-vline 
WA_Q1001_STR-SOTEX sy-vline 
WA_Q1001_STR-VERKTXT sy-vline 
WA_Q1001_STR-PPSCLAS sy-vline 
WA_Q1001_STR-PROZENT sy-vline 
WA_Q1001_STR-VERKOBJ sy-vline 
WA_Q1001_STR-SABLF_TEXT sy-vline 
WA_Q1001_STR-RESTY_TEXT sy-vline 
WA_Q1001_STR-RESTYSHORT sy-vline 
WA_Q1001_STR-HORA sy-vline 
WA_Q1001_STR-RRELSCLAS sy-vline 
WA_Q1001_STR-RELATKEY sy-vline 
WA_Q1001_STR-OTRESTY sy-vline 
WA_Q1001_STR-BELTIME sy-vline 
WA_Q1001_STR-BEDSPEC sy-vline      INTO ld_text SEPARATED BY SPACE.

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