ABAP Select data from SAP table EHSWAV_MATNR_APP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHSWAV_MATNR_APP
*  INTO TABLE @DATA(IT_EHSWAV_MATNR_APP2).
*--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_EHSWAV_MATNR_APP INDEX 1 INTO DATA(WA_EHSWAV_MATNR_APP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EHSWAV_MATNR_APP>-MANDT = 1.
<EHSWAV_MATNR_APP>-RECN = 1.
<EHSWAV_MATNR_APP>-ACTN = 1.
<EHSWAV_MATNR_APP>-VALFR = 1.
<EHSWAV_MATNR_APP>-VALTO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EHSWAV_MATNR_APP-AENNR, sy-vline,
  WA_EHSWAV_MATNR_APP-DELFLG, sy-vline,
  WA_EHSWAV_MATNR_APP-PARKFLG, sy-vline,
  WA_EHSWAV_MATNR_APP-CRDAT, sy-vline,
  WA_EHSWAV_MATNR_APP-CRNAM, sy-vline,
  WA_EHSWAV_MATNR_APP-UPDDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EHSWAV_MATNR_APP 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_EHSWAV_MATNR_APP 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_EHSWAV_MATNR_APP INTO WA_EHSWAV_MATNR_APP.


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

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

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

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_EHSWAV_MATNR_APP-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAV_MATNR_APP-MATNR.
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_EHSWAV_MATNR_APP_STR, 
MANDT TYPE STRING,
RECN TYPE STRING,
ACTN TYPE STRING,
VALFR TYPE STRING,
VALTO TYPE STRING,
AENNR TYPE STRING,
DELFLG TYPE STRING,
PARKFLG TYPE STRING,
CRDAT TYPE STRING,
CRNAM TYPE STRING,
UPDDAT TYPE STRING,
UPDNAM TYPE STRING,
SRSID TYPE STRING,
OWNID TYPE STRING,
RECNROOT TYPE STRING,
INTAPPNO TYPE STRING,
APPSTATUS TYPE STRING,
APPNO TYPE STRING,
APC TYPE STRING,
APVALFROM TYPE STRING,
APVALTO TYPE STRING,
APLWDG TYPE STRING,
APMNCAT TYPE STRING,
MATNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHSWAV_MATNR_APP_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_EHSWAV_MATNR_APP_STR-MANDT sy-vline 
WA_EHSWAV_MATNR_APP_STR-RECN sy-vline 
WA_EHSWAV_MATNR_APP_STR-ACTN sy-vline 
WA_EHSWAV_MATNR_APP_STR-VALFR sy-vline 
WA_EHSWAV_MATNR_APP_STR-VALTO sy-vline 
WA_EHSWAV_MATNR_APP_STR-AENNR sy-vline 
WA_EHSWAV_MATNR_APP_STR-DELFLG sy-vline 
WA_EHSWAV_MATNR_APP_STR-PARKFLG sy-vline 
WA_EHSWAV_MATNR_APP_STR-CRDAT sy-vline 
WA_EHSWAV_MATNR_APP_STR-CRNAM sy-vline 
WA_EHSWAV_MATNR_APP_STR-UPDDAT sy-vline 
WA_EHSWAV_MATNR_APP_STR-UPDNAM sy-vline 
WA_EHSWAV_MATNR_APP_STR-SRSID sy-vline 
WA_EHSWAV_MATNR_APP_STR-OWNID sy-vline 
WA_EHSWAV_MATNR_APP_STR-RECNROOT sy-vline 
WA_EHSWAV_MATNR_APP_STR-INTAPPNO sy-vline 
WA_EHSWAV_MATNR_APP_STR-APPSTATUS sy-vline 
WA_EHSWAV_MATNR_APP_STR-APPNO sy-vline 
WA_EHSWAV_MATNR_APP_STR-APC sy-vline 
WA_EHSWAV_MATNR_APP_STR-APVALFROM sy-vline 
WA_EHSWAV_MATNR_APP_STR-APVALTO sy-vline 
WA_EHSWAV_MATNR_APP_STR-APLWDG sy-vline 
WA_EHSWAV_MATNR_APP_STR-APMNCAT sy-vline 
WA_EHSWAV_MATNR_APP_STR-MATNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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