ABAP Select data from SAP table AVIXCCHESRQRH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AVIXCCHESRQRH
*  INTO TABLE @DATA(IT_AVIXCCHESRQRH2).
*--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_AVIXCCHESRQRH INDEX 1 INTO DATA(WA_AVIXCCHESRQRH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AVIXCCHESRQRH>-MANDT = 1.
<AVIXCCHESRQRH>-ESRREFHGUID = 1.
<AVIXCCHESRQRH>-PO_REF_NO = 1.
<AVIXCCHESRQRH>-BUKRS = 1.
<AVIXCCHESRQRH>-PARTNER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AVIXCCHESRQRH-QRIBAN, sy-vline,
  WA_AVIXCCHESRQRH-PO_AMOUNT, sy-vline,
  WA_AVIXCCHESRQRH-CONDCURR, sy-vline,
  WA_AVIXCCHESRQRH-DBERVON, sy-vline,
  WA_AVIXCCHESRQRH-DBERBIS, sy-vline,
  WA_AVIXCCHESRQRH-PO_TEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AVIXCCHESRQRH 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_AVIXCCHESRQRH 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_AVIXCCHESRQRH INTO WA_AVIXCCHESRQRH.


*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.

*Conversion exit ALPHA, internal->external for field PO_REF_NO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AVIXCCHESRQRH-PO_REF_NO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AVIXCCHESRQRH-PO_REF_NO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AVIXCCHESRQRH-PARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AVIXCCHESRQRH-PARTNER.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_AVIXCCHESRQRH_STR, 
MANDT TYPE STRING,
ESRREFHGUID TYPE STRING,
PO_REF_NO TYPE STRING,
BUKRS TYPE STRING,
PARTNER TYPE STRING,
QRIBAN TYPE STRING,
PO_AMOUNT TYPE STRING,
CONDCURR TYPE STRING,
DBERVON TYPE STRING,
DBERBIS TYPE STRING,
PO_TEXT TYPE STRING,
ESRREFDELFITXT TYPE STRING,
ALLDOCPROCESSED TYPE STRING,
ACCEPTDIFFAMOUNT TYPE STRING,
INVALID TYPE STRING,
RERF TYPE STRING,
DERF TYPE STRING,
TERF TYPE STRING,
REHER TYPE STRING,
RBEAR TYPE STRING,
DBEAR TYPE STRING,
TBEAR TYPE STRING,
RBHER TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AVIXCCHESRQRH_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_AVIXCCHESRQRH_STR-MANDT sy-vline 
WA_AVIXCCHESRQRH_STR-ESRREFHGUID sy-vline 
WA_AVIXCCHESRQRH_STR-PO_REF_NO sy-vline 
WA_AVIXCCHESRQRH_STR-BUKRS sy-vline 
WA_AVIXCCHESRQRH_STR-PARTNER sy-vline 
WA_AVIXCCHESRQRH_STR-QRIBAN sy-vline 
WA_AVIXCCHESRQRH_STR-PO_AMOUNT sy-vline 
WA_AVIXCCHESRQRH_STR-CONDCURR sy-vline 
WA_AVIXCCHESRQRH_STR-DBERVON sy-vline 
WA_AVIXCCHESRQRH_STR-DBERBIS sy-vline 
WA_AVIXCCHESRQRH_STR-PO_TEXT sy-vline 
WA_AVIXCCHESRQRH_STR-ESRREFDELFITXT sy-vline 
WA_AVIXCCHESRQRH_STR-ALLDOCPROCESSED sy-vline 
WA_AVIXCCHESRQRH_STR-ACCEPTDIFFAMOUNT sy-vline 
WA_AVIXCCHESRQRH_STR-INVALID sy-vline 
WA_AVIXCCHESRQRH_STR-RERF sy-vline 
WA_AVIXCCHESRQRH_STR-DERF sy-vline 
WA_AVIXCCHESRQRH_STR-TERF sy-vline 
WA_AVIXCCHESRQRH_STR-REHER sy-vline 
WA_AVIXCCHESRQRH_STR-RBEAR sy-vline 
WA_AVIXCCHESRQRH_STR-DBEAR sy-vline 
WA_AVIXCCHESRQRH_STR-TBEAR sy-vline 
WA_AVIXCCHESRQRH_STR-RBHER sy-vline 
WA_AVIXCCHESRQRH_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.