ABAP Select data from SAP table IQQFIELD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IQQFIELD
*  INTO TABLE @DATA(IT_IQQFIELD2).
*--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_IQQFIELD INDEX 1 INTO DATA(WA_IQQFIELD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IQQFIELD>-TAB = 1.
<IQQFIELD>-FIELD = 1.
<IQQFIELD>-TEXTFIELD = 1.
<IQQFIELD>-POS = 1.
<IQQFIELD>-LINENR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IQQFIELD-LOGNR, sy-vline,
  WA_IQQFIELD-OUTPUTLEN, sy-vline,
  WA_IQQFIELD-ROUND, sy-vline,
  WA_IQQFIELD-HEADLEN, sy-vline,
  WA_IQQFIELD-SCRLEN1, sy-vline,
  WA_IQQFIELD-SCRLEN2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IQQFIELD 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_IQQFIELD 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_IQQFIELD INTO WA_IQQFIELD.


*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_IQQFIELD_STR, 
TAB TYPE STRING,
FIELD TYPE STRING,
TEXTFIELD TYPE STRING,
POS TYPE STRING,
LINENR TYPE STRING,
LOGNR TYPE STRING,
OUTPUTLEN TYPE STRING,
ROUND TYPE STRING,
HEADLEN TYPE STRING,
SCRLEN1 TYPE STRING,
SCRLEN2 TYPE STRING,
SCRLEN3 TYPE STRING,
FIELDTEXT TYPE STRING,
REPTEXT TYPE STRING,
SCRTEXT_S TYPE STRING,
SCRTEXT_M TYPE STRING,
SCRTEXT_L TYPE STRING,
NOSUMM TYPE STRING,
CURRYPOS TYPE STRING,
TOTAL TYPE STRING,
CNT TYPE STRING,
SORTNR TYPE STRING,
DESCENDING TYPE STRING,
SUBTOTAL TYPE STRING,
SUBCNT TYPE STRING,
SOTEXT TYPE STRING,
SELOPT TYPE STRING,
SELNAME TYPE STRING,
NOINTERVAL TYPE STRING,
NOEXTENS TYPE STRING,
OBLIGATORY TYPE STRING,
NODISPLAY TYPE STRING,
ORDERNR TYPE STRING,
SELTEXT TYPE STRING,
EXCEPTFLAG TYPE STRING,
STAT_CNT TYPE STRING,
STAT_AVG TYPE STRING,
STAT_PER TYPE STRING,
RL_CRIT TYPE STRING,
UNIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IQQFIELD_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_IQQFIELD_STR-TAB sy-vline 
WA_IQQFIELD_STR-FIELD sy-vline 
WA_IQQFIELD_STR-TEXTFIELD sy-vline 
WA_IQQFIELD_STR-POS sy-vline 
WA_IQQFIELD_STR-LINENR sy-vline 
WA_IQQFIELD_STR-LOGNR sy-vline 
WA_IQQFIELD_STR-OUTPUTLEN sy-vline 
WA_IQQFIELD_STR-ROUND sy-vline 
WA_IQQFIELD_STR-HEADLEN sy-vline 
WA_IQQFIELD_STR-SCRLEN1 sy-vline 
WA_IQQFIELD_STR-SCRLEN2 sy-vline 
WA_IQQFIELD_STR-SCRLEN3 sy-vline 
WA_IQQFIELD_STR-FIELDTEXT sy-vline 
WA_IQQFIELD_STR-REPTEXT sy-vline 
WA_IQQFIELD_STR-SCRTEXT_S sy-vline 
WA_IQQFIELD_STR-SCRTEXT_M sy-vline 
WA_IQQFIELD_STR-SCRTEXT_L sy-vline 
WA_IQQFIELD_STR-NOSUMM sy-vline 
WA_IQQFIELD_STR-CURRYPOS sy-vline 
WA_IQQFIELD_STR-TOTAL sy-vline 
WA_IQQFIELD_STR-CNT sy-vline 
WA_IQQFIELD_STR-SORTNR sy-vline 
WA_IQQFIELD_STR-DESCENDING sy-vline 
WA_IQQFIELD_STR-SUBTOTAL sy-vline 
WA_IQQFIELD_STR-SUBCNT sy-vline 
WA_IQQFIELD_STR-SOTEXT sy-vline 
WA_IQQFIELD_STR-SELOPT sy-vline 
WA_IQQFIELD_STR-SELNAME sy-vline 
WA_IQQFIELD_STR-NOINTERVAL sy-vline 
WA_IQQFIELD_STR-NOEXTENS sy-vline 
WA_IQQFIELD_STR-OBLIGATORY sy-vline 
WA_IQQFIELD_STR-NODISPLAY sy-vline 
WA_IQQFIELD_STR-ORDERNR sy-vline 
WA_IQQFIELD_STR-SELTEXT sy-vline 
WA_IQQFIELD_STR-EXCEPTFLAG sy-vline 
WA_IQQFIELD_STR-STAT_CNT sy-vline 
WA_IQQFIELD_STR-STAT_AVG sy-vline 
WA_IQQFIELD_STR-STAT_PER sy-vline 
WA_IQQFIELD_STR-RL_CRIT sy-vline 
WA_IQQFIELD_STR-UNIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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