ABAP Select data from SAP table RCF_S_MDL_CAND_EDUCATION 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_CAND_EDUCATION 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_CAND_EDUCATION. 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_CAND_EDUCATION 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_CAND_EDUCATION TYPE STANDARD TABLE OF RCF_S_MDL_CAND_EDUCATION,
      WA_RCF_S_MDL_CAND_EDUCATION TYPE RCF_S_MDL_CAND_EDUCATION,
      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_CAND_EDUCATION> TYPE RCF_S_MDL_CAND_EDUCATION.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RCF_S_MDL_CAND_EDUCATION
*  INTO TABLE @DATA(IT_RCF_S_MDL_CAND_EDUCATION2).
*--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_CAND_EDUCATION INDEX 1 INTO DATA(WA_RCF_S_MDL_CAND_EDUCATION2).


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

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

ENDLOOP.

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

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


*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 ISOLA, internal->external for field DOC_LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RCF_S_MDL_CAND_EDUCATION-DOC_LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCF_S_MDL_CAND_EDUCATION-DOC_LANGU.
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_CAND_EDUCATION_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,
EDUCATION_TYPE TYPE STRING,
EDUCATION_FIELD TYPE STRING,
INSTITUTE TYPE STRING,
CITY TYPE STRING,
REGION TYPE STRING,
COUNTRY TYPE STRING,
FIELD_OF_STUDY1 TYPE STRING,
FIELD_OF_STUDY2 TYPE STRING,
FIELD_OF_STUDY3 TYPE STRING,
DEGREE TYPE STRING,
GRADE TYPE STRING,
START_DATE TYPE STRING,
END_DATE TYPE STRING,
DESCRIPTION TYPE STRING,
HIGHEST_DEGREE TYPE STRING,
DEGREE_LEVEL TYPE STRING,
COUNTRY_TXT TYPE STRING,
REGION_TXT TYPE STRING,
DEGREE_LEVEL_TXT TYPE STRING,
EDUCATION_TYPE_TXT TYPE STRING,
EDUCATION_FIELD_TXT TYPE STRING,
DESCRIPTION_TXT TYPE STRING,
DOC_LANGU TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RCF_S_MDL_CAND_EDUCATION_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_CAND_EDUCATION_STR-MANDT sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-PLVAR sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-OTYPE sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-OBJID sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-INFTY sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-SUBTY sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-ISTAT sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-PRIOX sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-BEGDA sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-ENDDA sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-VARYF sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-SEQNR sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-AEDTM sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-UNAME sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-REASN sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-HISTO sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-ITXNR sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-EDUCATION_TYPE sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-EDUCATION_FIELD sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-INSTITUTE sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-CITY sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-REGION sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-COUNTRY sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-FIELD_OF_STUDY1 sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-FIELD_OF_STUDY2 sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-FIELD_OF_STUDY3 sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-DEGREE sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-GRADE sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-START_DATE sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-END_DATE sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-DESCRIPTION sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-HIGHEST_DEGREE sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-DEGREE_LEVEL sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-COUNTRY_TXT sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-REGION_TXT sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-DEGREE_LEVEL_TXT sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-EDUCATION_TYPE_TXT sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-EDUCATION_FIELD_TXT sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-DESCRIPTION_TXT sy-vline 
WA_RCF_S_MDL_CAND_EDUCATION_STR-DOC_LANGU sy-vline      INTO ld_text SEPARATED BY SPACE.

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