ABAP Select data from SAP table HRESS_S_ENRO_MISCEL_DETAIL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRESS_S_ENRO_MISCEL_DETAIL
*  INTO TABLE @DATA(IT_HRESS_S_ENRO_MISCEL_DETAIL2).
*--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_HRESS_S_ENRO_MISCEL_DETAIL INDEX 1 INTO DATA(WA_HRESS_S_ENRO_MISCEL_DETAIL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRESS_S_ENRO_MISCEL_DETAIL>-ENROLLED_IN = 1.
<HRESS_S_ENRO_MISCEL_DETAIL>-TXT_PLAN = 1.
<HRESS_S_ENRO_MISCEL_DETAIL>-BEGDA = 1.
<HRESS_S_ENRO_MISCEL_DETAIL>-ENDDA = 1.
<HRESS_S_ENRO_MISCEL_DETAIL>-STOP_PERIOD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRESS_S_ENRO_MISCEL_DETAIL-TXT_PERIOD, sy-vline,
  WA_HRESS_S_ENRO_MISCEL_DETAIL-BEN_OPTION, sy-vline,
  WA_HRESS_S_ENRO_MISCEL_DETAIL-DEPENDENT, sy-vline,
  WA_HRESS_S_ENRO_MISCEL_DETAIL-BENEFICIARY, sy-vline,
  WA_HRESS_S_ENRO_MISCEL_DETAIL-INVESTMENT, sy-vline,
  WA_HRESS_S_ENRO_MISCEL_DETAIL-BAREA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRESS_S_ENRO_MISCEL_DETAIL 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_HRESS_S_ENRO_MISCEL_DETAIL 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_HRESS_S_ENRO_MISCEL_DETAIL INTO WA_HRESS_S_ENRO_MISCEL_DETAIL.


*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_HRESS_S_ENRO_MISCEL_DETAIL_STR, 
ENROLLED_IN TYPE STRING,
TXT_PLAN TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
STOP_PERIOD TYPE STRING,
TXT_PERIOD TYPE STRING,
BEN_OPTION TYPE STRING,
DEPENDENT TYPE STRING,
BENEFICIARY TYPE STRING,
INVESTMENT TYPE STRING,
BAREA TYPE STRING,
PLTYP TYPE STRING,
BPLAN TYPE STRING,
CURRE TYPE STRING,
DEPYN TYPE STRING,
BENYN TYPE STRING,
CTGYN TYPE STRING,
INVYN TYPE STRING,
CSTYN TYPE STRING,
CRDYN TYPE STRING,
COVYN TYPE STRING,
EECYN TYPE STRING,
ERCYN TYPE STRING,
VESYN TYPE STRING,
CSTCR TYPE STRING,
FLXCR TYPE STRING,
ERNOC TYPE STRING,
DEPEX TYPE STRING,
BENEX TYPE STRING,
INVEX TYPE STRING,
PRETAX_CONTRIB TYPE STRING,
POSTAX_CONTRIB TYPE STRING,
CHG_BPLAN TYPE STRING,
ADD_BPLAN TYPE STRING,
DEL_BPLAN TYPE STRING,
CHG_LEVL1 TYPE STRING,
INC_ADDNO TYPE STRING,
DEC_ADDNO TYPE STRING,
INC_PRECO TYPE STRING,
DEC_PRECO TYPE STRING,
INC_PSTCO TYPE STRING,
DEC_PSTCO TYPE STRING,
INC_BPRCO TYPE STRING,
DEC_BPRCO TYPE STRING,
INC_BPTCO TYPE STRING,
DEC_BPTCO TYPE STRING,
CHG_PSTTX TYPE STRING,
CHG_BPTTX TYPE STRING,
CHG_PRETX TYPE STRING,
CHG_DEPDT TYPE STRING,
CHG_BENEF TYPE STRING,
CHG_INVES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRESS_S_ENRO_MISCEL_DETAIL_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_HRESS_S_ENRO_MISCEL_DETAIL_STR-ENROLLED_IN sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-TXT_PLAN sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-BEGDA sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-ENDDA sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-STOP_PERIOD sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-TXT_PERIOD sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-BEN_OPTION sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-DEPENDENT sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-BENEFICIARY sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-INVESTMENT sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-BAREA sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-PLTYP sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-BPLAN sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-CURRE sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-DEPYN sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-BENYN sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-CTGYN sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-INVYN sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-CSTYN sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-CRDYN sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-COVYN sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-EECYN sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-ERCYN sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-VESYN sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-CSTCR sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-FLXCR sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-ERNOC sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-DEPEX sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-BENEX sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-INVEX sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-PRETAX_CONTRIB sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-POSTAX_CONTRIB sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-CHG_BPLAN sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-ADD_BPLAN sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-DEL_BPLAN sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-CHG_LEVL1 sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-INC_ADDNO sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-DEC_ADDNO sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-INC_PRECO sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-DEC_PRECO sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-INC_PSTCO sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-DEC_PSTCO sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-INC_BPRCO sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-DEC_BPRCO sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-INC_BPTCO sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-DEC_BPTCO sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-CHG_PSTTX sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-CHG_BPTTX sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-CHG_PRETX sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-CHG_DEPDT sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-CHG_BENEF sy-vline 
WA_HRESS_S_ENRO_MISCEL_DETAIL_STR-CHG_INVES sy-vline      INTO ld_text SEPARATED BY SPACE.

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