ABAP Select data from SAP table SND_AO_ISU_H into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SND_AO_ISU_H
*  INTO TABLE @DATA(IT_SND_AO_ISU_H2).
*--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_SND_AO_ISU_H INDEX 1 INTO DATA(WA_SND_AO_ISU_H2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SND_AO_ISU_H>-MANDT = 1.
<SND_AO_ISU_H>-EXTRACTION_ID = 1.
<SND_AO_ISU_H>-OPBEL = 1.
<SND_AO_ISU_H>-BUKRS = 1.
<SND_AO_ISU_H>-GJAHR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SND_AO_ISU_H-MONAT, sy-vline,
  WA_SND_AO_ISU_H-DOCNUM, sy-vline,
  WA_SND_AO_ISU_H-SOURCE, sy-vline,
  WA_SND_AO_ISU_H-BLDAT, sy-vline,
  WA_SND_AO_ISU_H-BUDAT, sy-vline,
  WA_SND_AO_ISU_H-SOURCEDOCNUM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SND_AO_ISU_H 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_SND_AO_ISU_H 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_SND_AO_ISU_H INTO WA_SND_AO_ISU_H.


*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 OPBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_SND_AO_ISU_H-OPBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SND_AO_ISU_H-OPBEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_SND_AO_ISU_H-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SND_AO_ISU_H-GJAHR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field VKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_SND_AO_ISU_H-VKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SND_AO_ISU_H-VKONT.
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_SND_AO_ISU_H_STR, 
MANDT TYPE STRING,
EXTRACTION_ID TYPE STRING,
OPBEL TYPE STRING,
BUKRS TYPE STRING,
GJAHR TYPE STRING,
MONAT TYPE STRING,
DOCNUM TYPE STRING,
SOURCE TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
SOURCEDOCNUM TYPE STRING,
APPLK TYPE STRING,
PARTNER TYPE STRING,
VKONT TYPE STRING,
TOTAL_DEBIT TYPE STRING,
TOTAL_CREDIT TYPE STRING,
UNIQUE_ID TYPE STRING,
INV_STATUS TYPE STRING,
INV_DATE_TIME TYPE STRING,
INV_STATUS_REASON TYPE STRING,
USER_CODE TYPE STRING,
DOC_ORIGIN TYPE STRING,
DOC_KEY TYPE STRING,
CONTROL_KEY TYPE STRING,
ACC_PERIOD TYPE STRING,
DOC_DATE TYPE STRING,
DOC_TYPE TYPE STRING,
DOC_SAVED TYPE STRING,
TRANSACTION_ID TYPE STRING,
CONTRACT_DATE TYPE STRING,
DISPATCH_DATE TYPE STRING,
DOC_TOTAL_TAX TYPE STRING,
DOC_TOTAL_NET TYPE STRING,
DOC_TOTAL_GROSS TYPE STRING,
SAFT_CURRENCY TYPE STRING,
RECNUM TYPE STRING,
TOTAL_CURR TYPE STRING,
TOTAL_AMT TYPE STRING,
INVOICED TYPE STRING,
REVREASON TYPE STRING,
ENTRY_DATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SND_AO_ISU_H_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_SND_AO_ISU_H_STR-MANDT sy-vline 
WA_SND_AO_ISU_H_STR-EXTRACTION_ID sy-vline 
WA_SND_AO_ISU_H_STR-OPBEL sy-vline 
WA_SND_AO_ISU_H_STR-BUKRS sy-vline 
WA_SND_AO_ISU_H_STR-GJAHR sy-vline 
WA_SND_AO_ISU_H_STR-MONAT sy-vline 
WA_SND_AO_ISU_H_STR-DOCNUM sy-vline 
WA_SND_AO_ISU_H_STR-SOURCE sy-vline 
WA_SND_AO_ISU_H_STR-BLDAT sy-vline 
WA_SND_AO_ISU_H_STR-BUDAT sy-vline 
WA_SND_AO_ISU_H_STR-SOURCEDOCNUM sy-vline 
WA_SND_AO_ISU_H_STR-APPLK sy-vline 
WA_SND_AO_ISU_H_STR-PARTNER sy-vline 
WA_SND_AO_ISU_H_STR-VKONT sy-vline 
WA_SND_AO_ISU_H_STR-TOTAL_DEBIT sy-vline 
WA_SND_AO_ISU_H_STR-TOTAL_CREDIT sy-vline 
WA_SND_AO_ISU_H_STR-UNIQUE_ID sy-vline 
WA_SND_AO_ISU_H_STR-INV_STATUS sy-vline 
WA_SND_AO_ISU_H_STR-INV_DATE_TIME sy-vline 
WA_SND_AO_ISU_H_STR-INV_STATUS_REASON sy-vline 
WA_SND_AO_ISU_H_STR-USER_CODE sy-vline 
WA_SND_AO_ISU_H_STR-DOC_ORIGIN sy-vline 
WA_SND_AO_ISU_H_STR-DOC_KEY sy-vline 
WA_SND_AO_ISU_H_STR-CONTROL_KEY sy-vline 
WA_SND_AO_ISU_H_STR-ACC_PERIOD sy-vline 
WA_SND_AO_ISU_H_STR-DOC_DATE sy-vline 
WA_SND_AO_ISU_H_STR-DOC_TYPE sy-vline 
WA_SND_AO_ISU_H_STR-DOC_SAVED sy-vline 
WA_SND_AO_ISU_H_STR-TRANSACTION_ID sy-vline 
WA_SND_AO_ISU_H_STR-CONTRACT_DATE sy-vline 
WA_SND_AO_ISU_H_STR-DISPATCH_DATE sy-vline 
WA_SND_AO_ISU_H_STR-DOC_TOTAL_TAX sy-vline 
WA_SND_AO_ISU_H_STR-DOC_TOTAL_NET sy-vline 
WA_SND_AO_ISU_H_STR-DOC_TOTAL_GROSS sy-vline 
WA_SND_AO_ISU_H_STR-SAFT_CURRENCY sy-vline 
WA_SND_AO_ISU_H_STR-RECNUM sy-vline 
WA_SND_AO_ISU_H_STR-TOTAL_CURR sy-vline 
WA_SND_AO_ISU_H_STR-TOTAL_AMT sy-vline 
WA_SND_AO_ISU_H_STR-INVOICED sy-vline 
WA_SND_AO_ISU_H_STR-REVREASON sy-vline 
WA_SND_AO_ISU_H_STR-ENTRY_DATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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