ABAP Select data from SAP table RCF_S_MDL_AF_REQ_BASIC_INFO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RCF_S_MDL_AF_REQ_BASIC_INFO
*  INTO TABLE @DATA(IT_RCF_S_MDL_AF_REQ_BASIC_INFO2).
*--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_RCF_S_MDL_AF_REQ_BASIC_INFO INDEX 1 INTO DATA(WA_RCF_S_MDL_AF_REQ_BASIC_INFO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RCF_S_MDL_AF_REQ_BASIC_INFO>-MANDT = 1.
<RCF_S_MDL_AF_REQ_BASIC_INFO>-PLVAR = 1.
<RCF_S_MDL_AF_REQ_BASIC_INFO>-OTYPE = 1.
<RCF_S_MDL_AF_REQ_BASIC_INFO>-OBJID = 1.
<RCF_S_MDL_AF_REQ_BASIC_INFO>-INFTY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RCF_S_MDL_AF_REQ_BASIC_INFO-SUBTY, sy-vline,
  WA_RCF_S_MDL_AF_REQ_BASIC_INFO-ISTAT, sy-vline,
  WA_RCF_S_MDL_AF_REQ_BASIC_INFO-PRIOX, sy-vline,
  WA_RCF_S_MDL_AF_REQ_BASIC_INFO-BEGDA, sy-vline,
  WA_RCF_S_MDL_AF_REQ_BASIC_INFO-ENDDA, sy-vline,
  WA_RCF_S_MDL_AF_REQ_BASIC_INFO-VARYF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RCF_S_MDL_AF_REQ_BASIC_INFO 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_RCF_S_MDL_AF_REQ_BASIC_INFO 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_RCF_S_MDL_AF_REQ_BASIC_INFO INTO WA_RCF_S_MDL_AF_REQ_BASIC_INFO.


*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 COSTCENTER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCF_S_MDL_AF_REQ_BASIC_INFO-COSTCENTER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCF_S_MDL_AF_REQ_BASIC_INFO-COSTCENTER.
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_RCF_S_MDL_AF_REQ_BASIC_INFO_STR, 
MANDT TYPE STRING,
PLVAR TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
INFTY TYPE STRING,
SUBTY TYPE STRING,
ISTAT TYPE STRING,
PRIOX TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
VARYF TYPE STRING,
SEQNR TYPE STRING,
AEDTM TYPE STRING,
UNAME TYPE STRING,
REASN TYPE STRING,
HISTO TYPE STRING,
ITXNR TYPE STRING,
STATUS TYPE STRING,
HEADER TYPE STRING,
NOTE TYPE STRING,
NUMBER_OF_JOBS TYPE STRING,
ORGID TYPE STRING,
COSTCENTER TYPE STRING,
COMPANYCODE TYPE STRING,
REQ_ALIAS TYPE STRING,
APPLICATION_END TYPE STRING,
TGROUP TYPE STRING,
REQUESTED_STATUS TYPE STRING,
REASON_CODE TYPE STRING,
REQUESTED_RSNCD TYPE STRING,
RP_ACT_GUID TYPE STRING,
REQUESTED_RCTR TYPE STRING,
REQ_TYPE TYPE STRING,
JOBID TYPE STRING,
RETENTION_DATE TYPE STRING,
RETENTION_DATE_M TYPE STRING,
SUBAREA TYPE STRING,
RECRUIT_REQUEST TYPE STRING,
FIRST_RELEASED TYPE STRING,
STATUS_TXT TYPE STRING,
ORGID_SHORT TYPE STRING,
ORGID_DESCRIPTION TYPE STRING,
TGROUP_TXT TYPE STRING,
REQUESTED_STATUS_TXT TYPE STRING,
CREATE_DATE TYPE STRING,
REASON_CODE_TXT TYPE STRING,
REQUESTED_RSN_CODE_TXT TYPE STRING,
RP_ACT_TXT TYPE STRING,
REQ_TYPE_TXT TYPE STRING,
JOBID_SHORT TYPE STRING,
JOBID_DESCRIPTION TYPE STRING,
NO_CDCY_TOTAL TYPE STRING,
NO_CDCY_IN_PROCESS TYPE STRING,
NO_CDCY_UNREAD TYPE STRING,
APPLICATION_END_AF TYPE STRING,
RETENTION_DATE_AF TYPE STRING,
RETENTION_DATE_M_AF TYPE STRING,
CREATE_DATE_AF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RCF_S_MDL_AF_REQ_BASIC_INFO_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_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-MANDT sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-PLVAR sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-OTYPE sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-OBJID sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-INFTY sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-SUBTY sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-ISTAT sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-PRIOX sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-BEGDA sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-ENDDA sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-VARYF sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-SEQNR sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-AEDTM sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-UNAME sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-REASN sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-HISTO sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-ITXNR sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-STATUS sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-HEADER sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-NOTE sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-NUMBER_OF_JOBS sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-ORGID sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-COSTCENTER sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-COMPANYCODE sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-REQ_ALIAS sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-APPLICATION_END sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-TGROUP sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-REQUESTED_STATUS sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-REASON_CODE sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-REQUESTED_RSNCD sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-RP_ACT_GUID sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-REQUESTED_RCTR sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-REQ_TYPE sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-JOBID sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-RETENTION_DATE sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-RETENTION_DATE_M sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-SUBAREA sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-RECRUIT_REQUEST sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-FIRST_RELEASED sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-STATUS_TXT sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-ORGID_SHORT sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-ORGID_DESCRIPTION sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-TGROUP_TXT sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-REQUESTED_STATUS_TXT sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-CREATE_DATE sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-REASON_CODE_TXT sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-REQUESTED_RSN_CODE_TXT sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-RP_ACT_TXT sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-REQ_TYPE_TXT sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-JOBID_SHORT sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-JOBID_DESCRIPTION sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-NO_CDCY_TOTAL sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-NO_CDCY_IN_PROCESS sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-NO_CDCY_UNREAD sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-APPLICATION_END_AF sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-RETENTION_DATE_AF sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-RETENTION_DATE_M_AF sy-vline 
WA_RCF_S_MDL_AF_REQ_BASIC_INFO_STR-CREATE_DATE_AF sy-vline      INTO ld_text SEPARATED BY SPACE.

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