ABAP Select data from SAP table ACLFNPRODCLHDR into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ACLFNPRODCLHDR 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 ACLFNPRODCLHDR. 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 ACLFNPRODCLHDR 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_ACLFNPRODCLHDR TYPE STANDARD TABLE OF ACLFNPRODCLHDR,
      WA_ACLFNPRODCLHDR TYPE ACLFNPRODCLHDR,
      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: <ACLFNPRODCLHDR> TYPE ACLFNPRODCLHDR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ACLFNPRODCLHDR
*  INTO TABLE @DATA(IT_ACLFNPRODCLHDR2).
*--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_ACLFNPRODCLHDR INDEX 1 INTO DATA(WA_ACLFNPRODCLHDR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ACLFNPRODCLHDR>-MANDT = 1.
<ACLFNPRODCLHDR>-CLASSINTERNALID = 1.
<ACLFNPRODCLHDR>-CLASSTYPE = 1.
<ACLFNPRODCLHDR>-CLASSTYPENAME = 1.
<ACLFNPRODCLHDR>-CLASS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ACLFNPRODCLHDR-CLASSSTATUS, sy-vline,
  WA_ACLFNPRODCLHDR-CLASSSTATUSNAME, sy-vline,
  WA_ACLFNPRODCLHDR-CLASSGROUP, sy-vline,
  WA_ACLFNPRODCLHDR-CLASSGROUPNAME, sy-vline,
  WA_ACLFNPRODCLHDR-CLASSSEARCHAUTHGRP, sy-vline,
  WA_ACLFNPRODCLHDR-CLASSCLASSFCTNAUTHGRP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ACLFNPRODCLHDR 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_ACLFNPRODCLHDR 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_ACLFNPRODCLHDR INTO WA_ACLFNPRODCLHDR.


*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 DOCNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ACLFNPRODCLHDR-DOCNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACLFNPRODCLHDR-DOCNUMBER.
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_ACLFNPRODCLHDR_STR, 
MANDT TYPE STRING,
CLASSINTERNALID TYPE STRING,
CLASSTYPE TYPE STRING,
CLASSTYPENAME TYPE STRING,
CLASS TYPE STRING,
CLASSSTATUS TYPE STRING,
CLASSSTATUSNAME TYPE STRING,
CLASSGROUP TYPE STRING,
CLASSGROUPNAME TYPE STRING,
CLASSSEARCHAUTHGRP TYPE STRING,
CLASSCLASSFCTNAUTHGRP TYPE STRING,
CLASSMAINTAUTHGRP TYPE STRING,
DOCNUMBER TYPE STRING,
DOCUMENTTYPE TYPE STRING,
DOCUMENTPART TYPE STRING,
DOCUMENTVERSION TYPE STRING,
SAMECLASSFCTNREACTION TYPE STRING,
CLASSSTANDARDORGNAME TYPE STRING,
CLASSSTANDARDNUMBER TYPE STRING,
CLASSSTANDARDSTARTDATE TYPE STRING,
CLASSSTANDARDVERSIONSTARTDATE TYPE STRING,
CLASSSTANDARDVERSION TYPE STRING,
CLASSSTANDARDCHARCTABLE TYPE STRING,
CREATIONDATE TYPE STRING,
LASTCHANGEDATE TYPE STRING,
CLASSISLOCAL TYPE STRING,
VALIDITYSTARTDATE TYPE STRING,
VALIDITYENDDATE TYPE STRING,
CLASSLASTCHANGEDDATETIME TYPE STRING,
KEYDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ACLFNPRODCLHDR_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_ACLFNPRODCLHDR_STR-MANDT sy-vline 
WA_ACLFNPRODCLHDR_STR-CLASSINTERNALID sy-vline 
WA_ACLFNPRODCLHDR_STR-CLASSTYPE sy-vline 
WA_ACLFNPRODCLHDR_STR-CLASSTYPENAME sy-vline 
WA_ACLFNPRODCLHDR_STR-CLASS sy-vline 
WA_ACLFNPRODCLHDR_STR-CLASSSTATUS sy-vline 
WA_ACLFNPRODCLHDR_STR-CLASSSTATUSNAME sy-vline 
WA_ACLFNPRODCLHDR_STR-CLASSGROUP sy-vline 
WA_ACLFNPRODCLHDR_STR-CLASSGROUPNAME sy-vline 
WA_ACLFNPRODCLHDR_STR-CLASSSEARCHAUTHGRP sy-vline 
WA_ACLFNPRODCLHDR_STR-CLASSCLASSFCTNAUTHGRP sy-vline 
WA_ACLFNPRODCLHDR_STR-CLASSMAINTAUTHGRP sy-vline 
WA_ACLFNPRODCLHDR_STR-DOCNUMBER sy-vline 
WA_ACLFNPRODCLHDR_STR-DOCUMENTTYPE sy-vline 
WA_ACLFNPRODCLHDR_STR-DOCUMENTPART sy-vline 
WA_ACLFNPRODCLHDR_STR-DOCUMENTVERSION sy-vline 
WA_ACLFNPRODCLHDR_STR-SAMECLASSFCTNREACTION sy-vline 
WA_ACLFNPRODCLHDR_STR-CLASSSTANDARDORGNAME sy-vline 
WA_ACLFNPRODCLHDR_STR-CLASSSTANDARDNUMBER sy-vline 
WA_ACLFNPRODCLHDR_STR-CLASSSTANDARDSTARTDATE sy-vline 
WA_ACLFNPRODCLHDR_STR-CLASSSTANDARDVERSIONSTARTDATE sy-vline 
WA_ACLFNPRODCLHDR_STR-CLASSSTANDARDVERSION sy-vline 
WA_ACLFNPRODCLHDR_STR-CLASSSTANDARDCHARCTABLE sy-vline 
WA_ACLFNPRODCLHDR_STR-CREATIONDATE sy-vline 
WA_ACLFNPRODCLHDR_STR-LASTCHANGEDATE sy-vline 
WA_ACLFNPRODCLHDR_STR-CLASSISLOCAL sy-vline 
WA_ACLFNPRODCLHDR_STR-VALIDITYSTARTDATE sy-vline 
WA_ACLFNPRODCLHDR_STR-VALIDITYENDDATE sy-vline 
WA_ACLFNPRODCLHDR_STR-CLASSLASTCHANGEDDATETIME sy-vline 
WA_ACLFNPRODCLHDR_STR-KEYDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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