ABAP Select data from SAP table RNE31_CASES_DISPLAY into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RNE31_CASES_DISPLAY 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 RNE31_CASES_DISPLAY. 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 RNE31_CASES_DISPLAY 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_RNE31_CASES_DISPLAY TYPE STANDARD TABLE OF RNE31_CASES_DISPLAY,
      WA_RNE31_CASES_DISPLAY TYPE RNE31_CASES_DISPLAY,
      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: <RNE31_CASES_DISPLAY> TYPE RNE31_CASES_DISPLAY.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RNE31_CASES_DISPLAY.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RNE31_CASES_DISPLAY
  INTO TABLE IT_RNE31_CASES_DISPLAY.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNE31_CASES_DISPLAY
*  INTO TABLE @DATA(IT_RNE31_CASES_DISPLAY2).
*--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_RNE31_CASES_DISPLAY INDEX 1 INTO DATA(WA_RNE31_CASES_DISPLAY2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RNE31_CASES_DISPLAY ASSIGNING <RNE31_CASES_DISPLAY>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNE31_CASES_DISPLAY>-FALNR = 1.
<RNE31_CASES_DISPLAY>-ANALYSIS_STATUS = 1.
<RNE31_CASES_DISPLAY>-PNAME = 1.
<RNE31_CASES_DISPLAY>-PZIFF_FALL = 1.
<RNE31_CASES_DISPLAY>-P6CASESERVICE_TREATMENTCLASS = 1.

ENDLOOP.

LOOP AT IT_RNE31_CASES_DISPLAY INTO WA_RNE31_CASES_DISPLAY.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNE31_CASES_DISPLAY-P6CASESERVICE, sy-vline,
  WA_RNE31_CASES_DISPLAY-TREATMENT_CLASS, sy-vline,
  WA_RNE31_CASES_DISPLAY-MIN_LOS, sy-vline,
  WA_RNE31_CASES_DISPLAY-AVG_LOS, sy-vline,
  WA_RNE31_CASES_DISPLAY-MAX_LOS, sy-vline,
  WA_RNE31_CASES_DISPLAY-TOTAL_CASES, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNE31_CASES_DISPLAY 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_RNE31_CASES_DISPLAY 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_RNE31_CASES_DISPLAY INTO WA_RNE31_CASES_DISPLAY.


*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 FALNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNE31_CASES_DISPLAY-FALNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNE31_CASES_DISPLAY-FALNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field P6CASESERVICE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNE31_CASES_DISPLAY-P6CASESERVICE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNE31_CASES_DISPLAY-P6CASESERVICE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BILLMODE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNE31_CASES_DISPLAY-BILLMODE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNE31_CASES_DISPLAY-BILLMODE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field P6CASESERVICE_CAT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNE31_CASES_DISPLAY-P6CASESERVICE_CAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNE31_CASES_DISPLAY-P6CASESERVICE_CAT.
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_RNE31_CASES_DISPLAY_STR, 
FALNR TYPE STRING,
ANALYSIS_STATUS TYPE STRING,
PNAME TYPE STRING,
PZIFF_FALL TYPE STRING,
P6CASESERVICE_TREATMENTCLASS TYPE STRING,
P6CASESERVICE TYPE STRING,
TREATMENT_CLASS TYPE STRING,
MIN_LOS TYPE STRING,
AVG_LOS TYPE STRING,
MAX_LOS TYPE STRING,
TOTAL_CASES TYPE STRING,
PRICE TYPE STRING,
GROSS_REVENUE TYPE STRING,
NORM_CASES TYPE STRING,
NORM_DAYS TYPE STRING,
NORM_REL TYPE STRING,
NORM_RELSUM TYPE STRING,
SHRT_CASES TYPE STRING,
SHRT_DAYS TYPE STRING,
SHRT_REL TYPE STRING,
SHRT_RELSUM TYPE STRING,
SHRT_REV TYPE STRING,
SHRT_REVSUM TYPE STRING,
ADTR_CASES TYPE STRING,
ADTR_DAYS TYPE STRING,
ADTR_REL TYPE STRING,
ADTR_RELSUM TYPE STRING,
ADTR_REV TYPE STRING,
ADTR_REVSUM TYPE STRING,
DSTR_CASES TYPE STRING,
DSTR_DAYS TYPE STRING,
DSTR_REL TYPE STRING,
DSTR_RELSUM TYPE STRING,
DSTR_REV TYPE STRING,
DSTR_REVSUM TYPE STRING,
LONG_CASES TYPE STRING,
LONG_DAYS TYPE STRING,
LONG_REL TYPE STRING,
LONG_RELSUM TYPE STRING,
LONG_REV TYPE STRING,
LONG_REVSUM TYPE STRING,
NET_REVENUE TYPE STRING,
TRNS_CASES TYPE STRING,
TRNS_DAYS TYPE STRING,
TRNS_REL TYPE STRING,
TRNS_RELSUM TYPE STRING,
TRNS_REV TYPE STRING,
TRNS_REVSUM TYPE STRING,
WAERS TYPE STRING,
P6CASESERVICE_TEXT TYPE STRING,
ALV_EXPAND TYPE STRING,
LOS TYPE STRING,
LOS_H TYPE STRING,
LOS_AVG TYPE STRING,
BILLMODE TYPE STRING,
P6CASESERVICE_CAT TYPE STRING,
LOS_BILL TYPE STRING,
TOB TYPE STRING,
FALAR TYPE STRING,
PEPP_FALL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNE31_CASES_DISPLAY_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_RNE31_CASES_DISPLAY_STR-FALNR sy-vline 
WA_RNE31_CASES_DISPLAY_STR-ANALYSIS_STATUS sy-vline 
WA_RNE31_CASES_DISPLAY_STR-PNAME sy-vline 
WA_RNE31_CASES_DISPLAY_STR-PZIFF_FALL sy-vline 
WA_RNE31_CASES_DISPLAY_STR-P6CASESERVICE_TREATMENTCLASS sy-vline 
WA_RNE31_CASES_DISPLAY_STR-P6CASESERVICE sy-vline 
WA_RNE31_CASES_DISPLAY_STR-TREATMENT_CLASS sy-vline 
WA_RNE31_CASES_DISPLAY_STR-MIN_LOS sy-vline 
WA_RNE31_CASES_DISPLAY_STR-AVG_LOS sy-vline 
WA_RNE31_CASES_DISPLAY_STR-MAX_LOS sy-vline 
WA_RNE31_CASES_DISPLAY_STR-TOTAL_CASES sy-vline 
WA_RNE31_CASES_DISPLAY_STR-PRICE sy-vline 
WA_RNE31_CASES_DISPLAY_STR-GROSS_REVENUE sy-vline 
WA_RNE31_CASES_DISPLAY_STR-NORM_CASES sy-vline 
WA_RNE31_CASES_DISPLAY_STR-NORM_DAYS sy-vline 
WA_RNE31_CASES_DISPLAY_STR-NORM_REL sy-vline 
WA_RNE31_CASES_DISPLAY_STR-NORM_RELSUM sy-vline 
WA_RNE31_CASES_DISPLAY_STR-SHRT_CASES sy-vline 
WA_RNE31_CASES_DISPLAY_STR-SHRT_DAYS sy-vline 
WA_RNE31_CASES_DISPLAY_STR-SHRT_REL sy-vline 
WA_RNE31_CASES_DISPLAY_STR-SHRT_RELSUM sy-vline 
WA_RNE31_CASES_DISPLAY_STR-SHRT_REV sy-vline 
WA_RNE31_CASES_DISPLAY_STR-SHRT_REVSUM sy-vline 
WA_RNE31_CASES_DISPLAY_STR-ADTR_CASES sy-vline 
WA_RNE31_CASES_DISPLAY_STR-ADTR_DAYS sy-vline 
WA_RNE31_CASES_DISPLAY_STR-ADTR_REL sy-vline 
WA_RNE31_CASES_DISPLAY_STR-ADTR_RELSUM sy-vline 
WA_RNE31_CASES_DISPLAY_STR-ADTR_REV sy-vline 
WA_RNE31_CASES_DISPLAY_STR-ADTR_REVSUM sy-vline 
WA_RNE31_CASES_DISPLAY_STR-DSTR_CASES sy-vline 
WA_RNE31_CASES_DISPLAY_STR-DSTR_DAYS sy-vline 
WA_RNE31_CASES_DISPLAY_STR-DSTR_REL sy-vline 
WA_RNE31_CASES_DISPLAY_STR-DSTR_RELSUM sy-vline 
WA_RNE31_CASES_DISPLAY_STR-DSTR_REV sy-vline 
WA_RNE31_CASES_DISPLAY_STR-DSTR_REVSUM sy-vline 
WA_RNE31_CASES_DISPLAY_STR-LONG_CASES sy-vline 
WA_RNE31_CASES_DISPLAY_STR-LONG_DAYS sy-vline 
WA_RNE31_CASES_DISPLAY_STR-LONG_REL sy-vline 
WA_RNE31_CASES_DISPLAY_STR-LONG_RELSUM sy-vline 
WA_RNE31_CASES_DISPLAY_STR-LONG_REV sy-vline 
WA_RNE31_CASES_DISPLAY_STR-LONG_REVSUM sy-vline 
WA_RNE31_CASES_DISPLAY_STR-NET_REVENUE sy-vline 
WA_RNE31_CASES_DISPLAY_STR-TRNS_CASES sy-vline 
WA_RNE31_CASES_DISPLAY_STR-TRNS_DAYS sy-vline 
WA_RNE31_CASES_DISPLAY_STR-TRNS_REL sy-vline 
WA_RNE31_CASES_DISPLAY_STR-TRNS_RELSUM sy-vline 
WA_RNE31_CASES_DISPLAY_STR-TRNS_REV sy-vline 
WA_RNE31_CASES_DISPLAY_STR-TRNS_REVSUM sy-vline 
WA_RNE31_CASES_DISPLAY_STR-WAERS sy-vline 
WA_RNE31_CASES_DISPLAY_STR-P6CASESERVICE_TEXT sy-vline 
WA_RNE31_CASES_DISPLAY_STR-ALV_EXPAND sy-vline 
WA_RNE31_CASES_DISPLAY_STR-LOS sy-vline 
WA_RNE31_CASES_DISPLAY_STR-LOS_H sy-vline 
WA_RNE31_CASES_DISPLAY_STR-LOS_AVG sy-vline 
WA_RNE31_CASES_DISPLAY_STR-BILLMODE sy-vline 
WA_RNE31_CASES_DISPLAY_STR-P6CASESERVICE_CAT sy-vline 
WA_RNE31_CASES_DISPLAY_STR-LOS_BILL sy-vline 
WA_RNE31_CASES_DISPLAY_STR-TOB sy-vline 
WA_RNE31_CASES_DISPLAY_STR-FALAR sy-vline 
WA_RNE31_CASES_DISPLAY_STR-PEPP_FALL sy-vline      INTO ld_text SEPARATED BY SPACE.

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