ABAP Select data from SAP table FICOS_CTRL_MAINT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FICOS_CTRL_MAINT
*  INTO TABLE @DATA(IT_FICOS_CTRL_MAINT2).
*--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_FICOS_CTRL_MAINT INDEX 1 INTO DATA(WA_FICOS_CTRL_MAINT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FICOS_CTRL_MAINT>-I_COND = 1.
<FICOS_CTRL_MAINT>-O_CONDTYPE = 1.
<FICOS_CTRL_MAINT>-F_INCREM = 1.
<FICOS_CTRL_MAINT>-I_MERGE_ORDER = 1.
<FICOS_CTRL_MAINT>-C_AMT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FICOS_CTRL_MAINT-F_INDCOND, sy-vline,
  WA_FICOS_CTRL_MAINT-O_DIFFCATG, sy-vline,
  WA_FICOS_CTRL_MAINT-I_DIFFVALUE, sy-vline,
  WA_FICOS_CTRL_MAINT-O_DIFFCATG_1, sy-vline,
  WA_FICOS_CTRL_MAINT-I_DIFFVALUE_1, sy-vline,
  WA_FICOS_CTRL_MAINT-O_DIFFCATG_2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FICOS_CTRL_MAINT 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_FICOS_CTRL_MAINT 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_FICOS_CTRL_MAINT INTO WA_FICOS_CTRL_MAINT.


*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_FICOS_CTRL_MAINT_STR, 
I_COND TYPE STRING,
O_CONDTYPE TYPE STRING,
F_INCREM TYPE STRING,
I_MERGE_ORDER TYPE STRING,
C_AMT TYPE STRING,
F_INDCOND TYPE STRING,
O_DIFFCATG TYPE STRING,
I_DIFFVALUE TYPE STRING,
O_DIFFCATG_1 TYPE STRING,
I_DIFFVALUE_1 TYPE STRING,
O_DIFFCATG_2 TYPE STRING,
I_DIFFVALUE_2 TYPE STRING,
O_DIFFCATG_3 TYPE STRING,
I_DIFFVALUE_3 TYPE STRING,
O_DIFFCATG_4 TYPE STRING,
I_DIFFVALUE_4 TYPE STRING,
F_MNTREP TYPE STRING,
F_MNTABS TYPE STRING,
F_MNTREL TYPE STRING,
F_MNTIND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FICOS_CTRL_MAINT_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_FICOS_CTRL_MAINT_STR-I_COND sy-vline 
WA_FICOS_CTRL_MAINT_STR-O_CONDTYPE sy-vline 
WA_FICOS_CTRL_MAINT_STR-F_INCREM sy-vline 
WA_FICOS_CTRL_MAINT_STR-I_MERGE_ORDER sy-vline 
WA_FICOS_CTRL_MAINT_STR-C_AMT sy-vline 
WA_FICOS_CTRL_MAINT_STR-F_INDCOND sy-vline 
WA_FICOS_CTRL_MAINT_STR-O_DIFFCATG sy-vline 
WA_FICOS_CTRL_MAINT_STR-I_DIFFVALUE sy-vline 
WA_FICOS_CTRL_MAINT_STR-O_DIFFCATG_1 sy-vline 
WA_FICOS_CTRL_MAINT_STR-I_DIFFVALUE_1 sy-vline 
WA_FICOS_CTRL_MAINT_STR-O_DIFFCATG_2 sy-vline 
WA_FICOS_CTRL_MAINT_STR-I_DIFFVALUE_2 sy-vline 
WA_FICOS_CTRL_MAINT_STR-O_DIFFCATG_3 sy-vline 
WA_FICOS_CTRL_MAINT_STR-I_DIFFVALUE_3 sy-vline 
WA_FICOS_CTRL_MAINT_STR-O_DIFFCATG_4 sy-vline 
WA_FICOS_CTRL_MAINT_STR-I_DIFFVALUE_4 sy-vline 
WA_FICOS_CTRL_MAINT_STR-F_MNTREP sy-vline 
WA_FICOS_CTRL_MAINT_STR-F_MNTABS sy-vline 
WA_FICOS_CTRL_MAINT_STR-F_MNTREL sy-vline 
WA_FICOS_CTRL_MAINT_STR-F_MNTIND sy-vline      INTO ld_text SEPARATED BY SPACE.

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