ABAP Select data from SAP table VPIQDBAGR_APPR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VPIQDBAGR_APPR 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_APPR. 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_APPR 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_APPR TYPE STANDARD TABLE OF VPIQDBAGR_APPR,
      WA_VPIQDBAGR_APPR TYPE VPIQDBAGR_APPR,
      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_APPR> TYPE VPIQDBAGR_APPR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VPIQDBAGR_APPR
*  INTO TABLE @DATA(IT_VPIQDBAGR_APPR2).
*--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_APPR INDEX 1 INTO DATA(WA_VPIQDBAGR_APPR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VPIQDBAGR_APPR>-MANDT = 1.
<VPIQDBAGR_APPR>-AGRID = 1.
<VPIQDBAGR_APPR>-ATTNO = 1.
<VPIQDBAGR_APPR>-AGRTYPE = 1.
<VPIQDBAGR_APPR>-AGRSTAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VPIQDBAGR_APPR-ARCH_STATUS, sy-vline,
  WA_VPIQDBAGR_APPR-AGRREMARK, sy-vline,
  WA_VPIQDBAGR_APPR-AYEAR, sy-vline,
  WA_VPIQDBAGR_APPR-APERIOD, sy-vline,
  WA_VPIQDBAGR_APPR-AGRBEGDA, sy-vline,
  WA_VPIQDBAGR_APPR-AGRENDDA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VPIQDBAGR_APPR 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_APPR 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_APPR INTO WA_VPIQDBAGR_APPR.


*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_APPR_STR, 
MANDT TYPE STRING,
AGRID TYPE STRING,
ATTNO TYPE STRING,
AGRTYPE TYPE STRING,
AGRSTAT TYPE STRING,
ARCH_STATUS TYPE STRING,
AGRREMARK TYPE STRING,
AYEAR TYPE STRING,
APERIOD TYPE STRING,
AGRBEGDA TYPE STRING,
AGRENDDA TYPE STRING,
AGRDATEE TYPE STRING,
AGRDATEL TYPE STRING,
AGRWEIGHT TYPE STRING,
UPAGRID TYPE STRING,
LAST_DAY_ATT TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VPIQDBAGR_APPR_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_APPR_STR-MANDT sy-vline 
WA_VPIQDBAGR_APPR_STR-AGRID sy-vline 
WA_VPIQDBAGR_APPR_STR-ATTNO sy-vline 
WA_VPIQDBAGR_APPR_STR-AGRTYPE sy-vline 
WA_VPIQDBAGR_APPR_STR-AGRSTAT sy-vline 
WA_VPIQDBAGR_APPR_STR-ARCH_STATUS sy-vline 
WA_VPIQDBAGR_APPR_STR-AGRREMARK sy-vline 
WA_VPIQDBAGR_APPR_STR-AYEAR sy-vline 
WA_VPIQDBAGR_APPR_STR-APERIOD sy-vline 
WA_VPIQDBAGR_APPR_STR-AGRBEGDA sy-vline 
WA_VPIQDBAGR_APPR_STR-AGRENDDA sy-vline 
WA_VPIQDBAGR_APPR_STR-AGRDATEE sy-vline 
WA_VPIQDBAGR_APPR_STR-AGRDATEL sy-vline 
WA_VPIQDBAGR_APPR_STR-AGRWEIGHT sy-vline 
WA_VPIQDBAGR_APPR_STR-UPAGRID sy-vline 
WA_VPIQDBAGR_APPR_STR-LAST_DAY_ATT sy-vline 
WA_VPIQDBAGR_APPR_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.