ABAP Select data from SAP table MCAFIH_ADMIN into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MCAFIH_ADMIN
*  INTO TABLE @DATA(IT_MCAFIH_ADMIN2).
*--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_MCAFIH_ADMIN INDEX 1 INTO DATA(WA_MCAFIH_ADMIN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MCAFIH_ADMIN>-GLTRP = 1.
<MCAFIH_ADMIN>-GSTRP = 1.
<MCAFIH_ADMIN>-FTRMS = 1.
<MCAFIH_ADMIN>-GLTRS = 1.
<MCAFIH_ADMIN>-GSTRS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MCAFIH_ADMIN-GSTRI, sy-vline,
  WA_MCAFIH_ADMIN-GETRI, sy-vline,
  WA_MCAFIH_ADMIN-FTRMI, sy-vline,
  WA_MCAFIH_ADMIN-IDAT2, sy-vline,
  WA_MCAFIH_ADMIN-ADDAT, sy-vline,
  WA_MCAFIH_ADMIN-ADUHR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MCAFIH_ADMIN 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_MCAFIH_ADMIN 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_MCAFIH_ADMIN INTO WA_MCAFIH_ADMIN.


*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_MCAFIH_ADMIN_STR, 
GLTRP TYPE STRING,
GSTRP TYPE STRING,
FTRMS TYPE STRING,
GLTRS TYPE STRING,
GSTRS TYPE STRING,
GSTRI TYPE STRING,
GETRI TYPE STRING,
FTRMI TYPE STRING,
IDAT2 TYPE STRING,
ADDAT TYPE STRING,
ADUHR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MCAFIH_ADMIN_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_MCAFIH_ADMIN_STR-GLTRP sy-vline 
WA_MCAFIH_ADMIN_STR-GSTRP sy-vline 
WA_MCAFIH_ADMIN_STR-FTRMS sy-vline 
WA_MCAFIH_ADMIN_STR-GLTRS sy-vline 
WA_MCAFIH_ADMIN_STR-GSTRS sy-vline 
WA_MCAFIH_ADMIN_STR-GSTRI sy-vline 
WA_MCAFIH_ADMIN_STR-GETRI sy-vline 
WA_MCAFIH_ADMIN_STR-FTRMI sy-vline 
WA_MCAFIH_ADMIN_STR-IDAT2 sy-vline 
WA_MCAFIH_ADMIN_STR-ADDAT sy-vline 
WA_MCAFIH_ADMIN_STR-ADUHR sy-vline      INTO ld_text SEPARATED BY SPACE.

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