ABAP Select data from SAP table RMODEL_CONTROL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RMODEL_CONTROL
*  INTO TABLE @DATA(IT_RMODEL_CONTROL2).
*--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_RMODEL_CONTROL INDEX 1 INTO DATA(WA_RMODEL_CONTROL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RMODEL_CONTROL>-B_CAPITAL_REQU = 1.
<RMODEL_CONTROL>-S_CURRENCY_REQU = 1.
<RMODEL_CONTROL>-S_RATE_OR_TERM = 1.
<RMODEL_CONTROL>-B_RATE_AMOUNT = 1.
<RMODEL_CONTROL>-A_RATE_COUNT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RMODEL_CONTROL-S_CLI, sy-vline,
  WA_RMODEL_CONTROL-S_CLI_FINANCED, sy-vline,
  WA_RMODEL_CONTROL-S_CLI_REQUIRED, sy-vline,
  WA_RMODEL_CONTROL-S_FEE, sy-vline,
  WA_RMODEL_CONTROL-S_FEE_FINANCED, sy-vline,
  WA_RMODEL_CONTROL-R_PRODUCT_ID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RMODEL_CONTROL 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_RMODEL_CONTROL 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_RMODEL_CONTROL INTO WA_RMODEL_CONTROL.


*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_RMODEL_CONTROL_STR, 
B_CAPITAL_REQU TYPE STRING,
S_CURRENCY_REQU TYPE STRING,
S_RATE_OR_TERM TYPE STRING,
B_RATE_AMOUNT TYPE STRING,
A_RATE_COUNT TYPE STRING,
S_CLI TYPE STRING,
S_CLI_FINANCED TYPE STRING,
S_CLI_REQUIRED TYPE STRING,
S_FEE TYPE STRING,
S_FEE_FINANCED TYPE STRING,
R_PRODUCT_ID TYPE STRING,
R_PRODUCT_VERSION TYPE STRING,
BUKRS TYPE STRING,
D_CONTAB_SEL TYPE STRING,
S_CONTAB_PAR TYPE STRING,
ORGUNIT TYPE STRING,
DISTRIB_CHANNEL TYPE STRING,
D_START_TERM TYPE STRING,
D_DISBURSE TYPE STRING,
D_RATE_DATE TYPE STRING,
D_START_REPAY TYPE STRING,
A_PAYDAY TYPE STRING,
S_PAYDAY_ULTIMO TYPE STRING,
A_REPAY_DELAY TYPE STRING,
S_CALENDAR TYPE STRING,
SBEWART_DISBURSE TYPE STRING,
GSART TYPE STRING,
S_COND_CHECK_OFF TYPE STRING,
S_IGNORE_E043 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RMODEL_CONTROL_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_RMODEL_CONTROL_STR-B_CAPITAL_REQU sy-vline 
WA_RMODEL_CONTROL_STR-S_CURRENCY_REQU sy-vline 
WA_RMODEL_CONTROL_STR-S_RATE_OR_TERM sy-vline 
WA_RMODEL_CONTROL_STR-B_RATE_AMOUNT sy-vline 
WA_RMODEL_CONTROL_STR-A_RATE_COUNT sy-vline 
WA_RMODEL_CONTROL_STR-S_CLI sy-vline 
WA_RMODEL_CONTROL_STR-S_CLI_FINANCED sy-vline 
WA_RMODEL_CONTROL_STR-S_CLI_REQUIRED sy-vline 
WA_RMODEL_CONTROL_STR-S_FEE sy-vline 
WA_RMODEL_CONTROL_STR-S_FEE_FINANCED sy-vline 
WA_RMODEL_CONTROL_STR-R_PRODUCT_ID sy-vline 
WA_RMODEL_CONTROL_STR-R_PRODUCT_VERSION sy-vline 
WA_RMODEL_CONTROL_STR-BUKRS sy-vline 
WA_RMODEL_CONTROL_STR-D_CONTAB_SEL sy-vline 
WA_RMODEL_CONTROL_STR-S_CONTAB_PAR sy-vline 
WA_RMODEL_CONTROL_STR-ORGUNIT sy-vline 
WA_RMODEL_CONTROL_STR-DISTRIB_CHANNEL sy-vline 
WA_RMODEL_CONTROL_STR-D_START_TERM sy-vline 
WA_RMODEL_CONTROL_STR-D_DISBURSE sy-vline 
WA_RMODEL_CONTROL_STR-D_RATE_DATE sy-vline 
WA_RMODEL_CONTROL_STR-D_START_REPAY sy-vline 
WA_RMODEL_CONTROL_STR-A_PAYDAY sy-vline 
WA_RMODEL_CONTROL_STR-S_PAYDAY_ULTIMO sy-vline 
WA_RMODEL_CONTROL_STR-A_REPAY_DELAY sy-vline 
WA_RMODEL_CONTROL_STR-S_CALENDAR sy-vline 
WA_RMODEL_CONTROL_STR-SBEWART_DISBURSE sy-vline 
WA_RMODEL_CONTROL_STR-GSART sy-vline 
WA_RMODEL_CONTROL_STR-S_COND_CHECK_OFF sy-vline 
WA_RMODEL_CONTROL_STR-S_IGNORE_E043 sy-vline      INTO ld_text SEPARATED BY SPACE.

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