ABAP Select data from SAP table VPIQDBAGR_ASSIGNM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VPIQDBAGR_ASSIGNM
*  INTO TABLE @DATA(IT_VPIQDBAGR_ASSIGNM2).
*--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_VPIQDBAGR_ASSIGNM INDEX 1 INTO DATA(WA_VPIQDBAGR_ASSIGNM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VPIQDBAGR_ASSIGNM>-MANDT = 1.
<VPIQDBAGR_ASSIGNM>-AGRID = 1.
<VPIQDBAGR_ASSIGNM>-AGRPLVAR = 1.
<VPIQDBAGR_ASSIGNM>-AGROTYPE = 1.
<VPIQDBAGR_ASSIGNM>-AGRREALO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VPIQDBAGR_ASSIGNM-INFTY, sy-vline,
  WA_VPIQDBAGR_ASSIGNM-RSIGN, sy-vline,
  WA_VPIQDBAGR_ASSIGNM-RELAT, sy-vline,
  WA_VPIQDBAGR_ASSIGNM-ISTAT, sy-vline,
  WA_VPIQDBAGR_ASSIGNM-PRIOX, sy-vline,
  WA_VPIQDBAGR_ASSIGNM-BEGDA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VPIQDBAGR_ASSIGNM 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_VPIQDBAGR_ASSIGNM 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_VPIQDBAGR_ASSIGNM INTO WA_VPIQDBAGR_ASSIGNM.


*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_VPIQDBAGR_ASSIGNM_STR, 
MANDT TYPE STRING,
AGRID TYPE STRING,
AGRPLVAR TYPE STRING,
AGROTYPE TYPE STRING,
AGRREALO TYPE STRING,
INFTY TYPE STRING,
RSIGN TYPE STRING,
RELAT TYPE STRING,
ISTAT TYPE STRING,
PRIOX TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
VARYF TYPE STRING,
SEQNR TYPE STRING,
SCLAS TYPE STRING,
SOBID TYPE STRING,
MODREG_ID TYPE STRING,
AUDR_ID TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VPIQDBAGR_ASSIGNM_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_VPIQDBAGR_ASSIGNM_STR-MANDT sy-vline 
WA_VPIQDBAGR_ASSIGNM_STR-AGRID sy-vline 
WA_VPIQDBAGR_ASSIGNM_STR-AGRPLVAR sy-vline 
WA_VPIQDBAGR_ASSIGNM_STR-AGROTYPE sy-vline 
WA_VPIQDBAGR_ASSIGNM_STR-AGRREALO sy-vline 
WA_VPIQDBAGR_ASSIGNM_STR-INFTY sy-vline 
WA_VPIQDBAGR_ASSIGNM_STR-RSIGN sy-vline 
WA_VPIQDBAGR_ASSIGNM_STR-RELAT sy-vline 
WA_VPIQDBAGR_ASSIGNM_STR-ISTAT sy-vline 
WA_VPIQDBAGR_ASSIGNM_STR-PRIOX sy-vline 
WA_VPIQDBAGR_ASSIGNM_STR-BEGDA sy-vline 
WA_VPIQDBAGR_ASSIGNM_STR-ENDDA sy-vline 
WA_VPIQDBAGR_ASSIGNM_STR-VARYF sy-vline 
WA_VPIQDBAGR_ASSIGNM_STR-SEQNR sy-vline 
WA_VPIQDBAGR_ASSIGNM_STR-SCLAS sy-vline 
WA_VPIQDBAGR_ASSIGNM_STR-SOBID sy-vline 
WA_VPIQDBAGR_ASSIGNM_STR-MODREG_ID sy-vline 
WA_VPIQDBAGR_ASSIGNM_STR-AUDR_ID sy-vline 
WA_VPIQDBAGR_ASSIGNM_STR-KZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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