ABAP Select data from SAP table E1VFSCAH into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E1VFSCAH 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 E1VFSCAH. 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 E1VFSCAH 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_E1VFSCAH TYPE STANDARD TABLE OF E1VFSCAH,
      WA_E1VFSCAH TYPE E1VFSCAH,
      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: <E1VFSCAH> TYPE E1VFSCAH.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E1VFSCAH.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E1VFSCAH
  INTO TABLE IT_E1VFSCAH.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E1VFSCAH
*  INTO TABLE @DATA(IT_E1VFSCAH2).
*--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_E1VFSCAH INDEX 1 INTO DATA(WA_E1VFSCAH2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E1VFSCAH ASSIGNING <E1VFSCAH>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E1VFSCAH>-SCATYP = 1.
<E1VFSCAH>-SCABAS = 1.
<E1VFSCAH>-SCUOF = 1.
<E1VFSCAH>-KPEIN = 1.
<E1VFSCAH>-KMEIN = 1.

ENDLOOP.

LOOP AT IT_E1VFSCAH INTO WA_E1VFSCAH.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E1VFSCAH-KRECH, sy-vline,
  WA_E1VFSCAH-LPEIN, sy-vline,
  WA_E1VFSCAH-SCALEN, sy-vline,
  WA_E1VFSCAH-TSCALEN, sy-vline,
  WA_E1VFSCAH-MINFLG, sy-vline,
  WA_E1VFSCAH-MAXFLG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E1VFSCAH 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_E1VFSCAH 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_E1VFSCAH INTO WA_E1VFSCAH.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_E1VFSCAH_STR, 
SCATYP TYPE STRING,
SCABAS TYPE STRING,
SCUOF TYPE STRING,
KPEIN TYPE STRING,
KMEIN TYPE STRING,
KRECH TYPE STRING,
LPEIN TYPE STRING,
SCALEN TYPE STRING,
TSCALEN TYPE STRING,
MINFLG TYPE STRING,
MAXFLG TYPE STRING,
CCBVRR TYPE STRING,
SCBVRR TYPE STRING,
CTBVRR TYPE STRING,
KAPPL TYPE STRING,
SCA_TXT TYPE STRING,
SPRAS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E1VFSCAH_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_E1VFSCAH_STR-SCATYP sy-vline 
WA_E1VFSCAH_STR-SCABAS sy-vline 
WA_E1VFSCAH_STR-SCUOF sy-vline 
WA_E1VFSCAH_STR-KPEIN sy-vline 
WA_E1VFSCAH_STR-KMEIN sy-vline 
WA_E1VFSCAH_STR-KRECH sy-vline 
WA_E1VFSCAH_STR-LPEIN sy-vline 
WA_E1VFSCAH_STR-SCALEN sy-vline 
WA_E1VFSCAH_STR-TSCALEN sy-vline 
WA_E1VFSCAH_STR-MINFLG sy-vline 
WA_E1VFSCAH_STR-MAXFLG sy-vline 
WA_E1VFSCAH_STR-CCBVRR sy-vline 
WA_E1VFSCAH_STR-SCBVRR sy-vline 
WA_E1VFSCAH_STR-CTBVRR sy-vline 
WA_E1VFSCAH_STR-KAPPL sy-vline 
WA_E1VFSCAH_STR-SCA_TXT sy-vline 
WA_E1VFSCAH_STR-SPRAS sy-vline      INTO ld_text SEPARATED BY SPACE.

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