ABAP Select data from SAP table FACV_UH_CD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FACV_UH_CD
*  INTO TABLE @DATA(IT_FACV_UH_CD2).
*--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_FACV_UH_CD INDEX 1 INTO DATA(WA_FACV_UH_CD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FACV_UH_CD>-MANDT = 1.
<FACV_UH_CD>-OBJECTCLASS = 1.
<FACV_UH_CD>-OBJECTID = 1.
<FACV_UH_CD>-DOCUMENTNUMBER = 1.
<FACV_UH_CD>-TABLENAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FACV_UH_CD-FIELDNAME, sy-vline,
  WA_FACV_UH_CD-CHANGETYPE, sy-vline,
  WA_FACV_UH_CD-TABLEKEY, sy-vline,
  WA_FACV_UH_CD-CHANGETYPETEXT, sy-vline,
  WA_FACV_UH_CD-OBJECTTYPETEXT, sy-vline,
  WA_FACV_UH_CD-OBJECTTEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FACV_UH_CD 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_FACV_UH_CD 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_FACV_UH_CD INTO WA_FACV_UH_CD.


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

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

*Conversion exit ISOLA, internal->external for field LANGAUGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_FACV_UH_CD-LANGAUGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FACV_UH_CD-LANGAUGE.
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_FACV_UH_CD_STR, 
MANDT TYPE STRING,
OBJECTCLASS TYPE STRING,
OBJECTID TYPE STRING,
DOCUMENTNUMBER TYPE STRING,
TABLENAME TYPE STRING,
FIELDNAME TYPE STRING,
CHANGETYPE TYPE STRING,
TABLEKEY TYPE STRING,
CHANGETYPETEXT TYPE STRING,
OBJECTTYPETEXT TYPE STRING,
OBJECTTEXT TYPE STRING,
OBJECTFIELDTEXT TYPE STRING,
USERNAME TYPE STRING,
CREATEDDATE TYPE STRING,
CREATEDTIME TYPE STRING,
NEWVALUE TYPE STRING,
OLDVALUE TYPE STRING,
VERSIONID TYPE STRING,
HIERARCHYCATEGORY TYPE STRING,
HRYTYPE TYPE STRING,
HIERARCHYID TYPE STRING,
VALIDITYSTARTDATE TYPE STRING,
VALIDITYENDDATE TYPE STRING,
LANGAUGE TYPE STRING,
LANGUAGENAME TYPE STRING,
FULLNAME TYPE STRING,
TABFIELDNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FACV_UH_CD_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_FACV_UH_CD_STR-MANDT sy-vline 
WA_FACV_UH_CD_STR-OBJECTCLASS sy-vline 
WA_FACV_UH_CD_STR-OBJECTID sy-vline 
WA_FACV_UH_CD_STR-DOCUMENTNUMBER sy-vline 
WA_FACV_UH_CD_STR-TABLENAME sy-vline 
WA_FACV_UH_CD_STR-FIELDNAME sy-vline 
WA_FACV_UH_CD_STR-CHANGETYPE sy-vline 
WA_FACV_UH_CD_STR-TABLEKEY sy-vline 
WA_FACV_UH_CD_STR-CHANGETYPETEXT sy-vline 
WA_FACV_UH_CD_STR-OBJECTTYPETEXT sy-vline 
WA_FACV_UH_CD_STR-OBJECTTEXT sy-vline 
WA_FACV_UH_CD_STR-OBJECTFIELDTEXT sy-vline 
WA_FACV_UH_CD_STR-USERNAME sy-vline 
WA_FACV_UH_CD_STR-CREATEDDATE sy-vline 
WA_FACV_UH_CD_STR-CREATEDTIME sy-vline 
WA_FACV_UH_CD_STR-NEWVALUE sy-vline 
WA_FACV_UH_CD_STR-OLDVALUE sy-vline 
WA_FACV_UH_CD_STR-VERSIONID sy-vline 
WA_FACV_UH_CD_STR-HIERARCHYCATEGORY sy-vline 
WA_FACV_UH_CD_STR-HRYTYPE sy-vline 
WA_FACV_UH_CD_STR-HIERARCHYID sy-vline 
WA_FACV_UH_CD_STR-VALIDITYSTARTDATE sy-vline 
WA_FACV_UH_CD_STR-VALIDITYENDDATE sy-vline 
WA_FACV_UH_CD_STR-LANGAUGE sy-vline 
WA_FACV_UH_CD_STR-LANGUAGENAME sy-vline 
WA_FACV_UH_CD_STR-FULLNAME sy-vline 
WA_FACV_UH_CD_STR-TABFIELDNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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