ABAP Select data from SAP table ISSUPLREVALUSRDFNDCRITERIATP1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ISSUPLREVALUSRDFNDCRITERIATP1 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 ISSUPLREVALUSRDFNDCRITERIATP1. 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 ISSUPLREVALUSRDFNDCRITERIATP1 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_ISSUPLREVALUSRDFNDCRITERIATP1 TYPE STANDARD TABLE OF ISSUPLREVALUSRDFNDCRITERIATP1,
      WA_ISSUPLREVALUSRDFNDCRITERIATP1 TYPE ISSUPLREVALUSRDFNDCRITERIATP1,
      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: <ISSUPLREVALUSRDFNDCRITERIATP1> TYPE ISSUPLREVALUSRDFNDCRITERIATP1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ISSUPLREVALUSRDFNDCRITERIATP1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ISSUPLREVALUSRDFNDCRITERIATP1
  INTO TABLE IT_ISSUPLREVALUSRDFNDCRITERIATP1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISSUPLREVALUSRDFNDCRITERIATP1
*  INTO TABLE @DATA(IT_ISSUPLREVALUSRDFNDCRITERIATP12).
*--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_ISSUPLREVALUSRDFNDCRITERIATP1 INDEX 1 INTO DATA(WA_ISSUPLREVALUSRDFNDCRITERIATP12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ISSUPLREVALUSRDFNDCRITERIATP1 ASSIGNING <ISSUPLREVALUSRDFNDCRITERIATP1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISSUPLREVALUSRDFNDCRITERIATP1>-KEY = 1.
<ISSUPLREVALUSRDFNDCRITERIATP1>-PARENT_KEY = 1.
<ISSUPLREVALUSRDFNDCRITERIATP1>-ROOT_KEY = 1.
<ISSUPLREVALUSRDFNDCRITERIATP1>-SUPPLIER = 1.
<ISSUPLREVALUSRDFNDCRITERIATP1>-MATERIALGROUP = 1.

ENDLOOP.

LOOP AT IT_ISSUPLREVALUSRDFNDCRITERIATP1 INTO WA_ISSUPLREVALUSRDFNDCRITERIATP1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISSUPLREVALUSRDFNDCRITERIATP1-PURCHASINGCATEGORY, sy-vline,
  WA_ISSUPLREVALUSRDFNDCRITERIATP1-SUPLREVALUSERDEFINEDCRITERIA, sy-vline,
  WA_ISSUPLREVALUSRDFNDCRITERIATP1-VALIDFROM, sy-vline,
  WA_ISSUPLREVALUSRDFNDCRITERIATP1-VALIDTO, sy-vline,
  WA_ISSUPLREVALUSRDFNDCRITERIATP1-SUPLREVALUSRDFNDCRITRACRTEDBY, sy-vline,
  WA_ISSUPLREVALUSRDFNDCRITERIATP1-SUPLREVALUSERDFNDCRITRACRTNDTE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISSUPLREVALUSRDFNDCRITERIATP1 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_ISSUPLREVALUSRDFNDCRITERIATP1 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_ISSUPLREVALUSRDFNDCRITERIATP1 INTO WA_ISSUPLREVALUSRDFNDCRITERIATP1.


*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 SUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISSUPLREVALUSRDFNDCRITERIATP1-SUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISSUPLREVALUSRDFNDCRITERIATP1-SUPPLIER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PURCHASINGCATEGORY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISSUPLREVALUSRDFNDCRITERIATP1-PURCHASINGCATEGORY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISSUPLREVALUSRDFNDCRITERIATP1-PURCHASINGCATEGORY.
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_ISSUPLREVALUSRDFNDCRITERIATP1_STR, 
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
SUPPLIER TYPE STRING,
MATERIALGROUP TYPE STRING,
PURCHASINGCATEGORY TYPE STRING,
SUPLREVALUSERDEFINEDCRITERIA TYPE STRING,
VALIDFROM TYPE STRING,
VALIDTO TYPE STRING,
SUPLREVALUSRDFNDCRITRACRTEDBY TYPE STRING,
SUPLREVALUSERDFNDCRITRACRTNDTE TYPE STRING,
SUPLREVALUSRDFNDCRITRACHGDBY TYPE STRING,
SUPLREVALUSERDFNDCRITRACHGDATE TYPE STRING,
TOTNMBROFSUPLRUSRDFNDCRITRA TYPE STRING,
ISDELETED TYPE STRING,
COMMENTS TYPE STRING,
SUPPLIERACCOUNTGROUP TYPE STRING,
ACTIVEUUID TYPE STRING,
HASACTIVEENTITY TYPE STRING,
DRAFTENTITYCREATIONDATETIME TYPE STRING,
DRAFTENTITYLASTCHANGEDATETIME TYPE STRING,
DRAFTADMINISTRATIVEDATAUUID TYPE STRING,
DRAFTENTITYCONSISTENCYSTATUS TYPE STRING,
DRAFTENTITYOPERATIONCODE TYPE STRING,
ISACTIVEENTITY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISSUPLREVALUSRDFNDCRITERIATP1_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_ISSUPLREVALUSRDFNDCRITERIATP1_STR-KEY sy-vline 
WA_ISSUPLREVALUSRDFNDCRITERIATP1_STR-PARENT_KEY sy-vline 
WA_ISSUPLREVALUSRDFNDCRITERIATP1_STR-ROOT_KEY sy-vline 
WA_ISSUPLREVALUSRDFNDCRITERIATP1_STR-SUPPLIER sy-vline 
WA_ISSUPLREVALUSRDFNDCRITERIATP1_STR-MATERIALGROUP sy-vline 
WA_ISSUPLREVALUSRDFNDCRITERIATP1_STR-PURCHASINGCATEGORY sy-vline 
WA_ISSUPLREVALUSRDFNDCRITERIATP1_STR-SUPLREVALUSERDEFINEDCRITERIA sy-vline 
WA_ISSUPLREVALUSRDFNDCRITERIATP1_STR-VALIDFROM sy-vline 
WA_ISSUPLREVALUSRDFNDCRITERIATP1_STR-VALIDTO sy-vline 
WA_ISSUPLREVALUSRDFNDCRITERIATP1_STR-SUPLREVALUSRDFNDCRITRACRTEDBY sy-vline 
WA_ISSUPLREVALUSRDFNDCRITERIATP1_STR-SUPLREVALUSERDFNDCRITRACRTNDTE sy-vline 
WA_ISSUPLREVALUSRDFNDCRITERIATP1_STR-SUPLREVALUSRDFNDCRITRACHGDBY sy-vline 
WA_ISSUPLREVALUSRDFNDCRITERIATP1_STR-SUPLREVALUSERDFNDCRITRACHGDATE sy-vline 
WA_ISSUPLREVALUSRDFNDCRITERIATP1_STR-TOTNMBROFSUPLRUSRDFNDCRITRA sy-vline 
WA_ISSUPLREVALUSRDFNDCRITERIATP1_STR-ISDELETED sy-vline 
WA_ISSUPLREVALUSRDFNDCRITERIATP1_STR-COMMENTS sy-vline 
WA_ISSUPLREVALUSRDFNDCRITERIATP1_STR-SUPPLIERACCOUNTGROUP sy-vline 
WA_ISSUPLREVALUSRDFNDCRITERIATP1_STR-ACTIVEUUID sy-vline 
WA_ISSUPLREVALUSRDFNDCRITERIATP1_STR-HASACTIVEENTITY sy-vline 
WA_ISSUPLREVALUSRDFNDCRITERIATP1_STR-DRAFTENTITYCREATIONDATETIME sy-vline 
WA_ISSUPLREVALUSRDFNDCRITERIATP1_STR-DRAFTENTITYLASTCHANGEDATETIME sy-vline 
WA_ISSUPLREVALUSRDFNDCRITERIATP1_STR-DRAFTADMINISTRATIVEDATAUUID sy-vline 
WA_ISSUPLREVALUSRDFNDCRITERIATP1_STR-DRAFTENTITYCONSISTENCYSTATUS sy-vline 
WA_ISSUPLREVALUSRDFNDCRITERIATP1_STR-DRAFTENTITYOPERATIONCODE sy-vline 
WA_ISSUPLREVALUSRDFNDCRITERIATP1_STR-ISACTIVEENTITY sy-vline      INTO ld_text SEPARATED BY SPACE.

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