ABAP Select data from SAP table RNINS_SCR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNINS_SCR
*  INTO TABLE @DATA(IT_RNINS_SCR2).
*--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_RNINS_SCR INDEX 1 INTO DATA(WA_RNINS_SCR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNINS_SCR>-MANDT = 1.
<RNINS_SCR>-PARTNER = 1.
<RNINS_SCR>-INS_PROV_GRP = 1.
<RNINS_SCR>-INS_PROV_TYPE = 1.
<RNINS_SCR>-TYPE_CP_REL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNINS_SCR-HINS_NUM, sy-vline,
  WA_RNINS_SCR-HINS_CARD_NUM, sy-vline,
  WA_RNINS_SCR-CONT_PER1, sy-vline,
  WA_RNINS_SCR-CONT_PER2, sy-vline,
  WA_RNINS_SCR-SORT_BILL, sy-vline,
  WA_RNINS_SCR-INDV_INVP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNINS_SCR 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_RNINS_SCR 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_RNINS_SCR INTO WA_RNINS_SCR.


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

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

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

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

*Conversion exit ALPHA, internal->external for field PPA_NUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNINS_SCR-PPA_NUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNINS_SCR-PPA_NUM.
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_RNINS_SCR_STR, 
MANDT TYPE STRING,
PARTNER TYPE STRING,
INS_PROV_GRP TYPE STRING,
INS_PROV_TYPE TYPE STRING,
TYPE_CP_REL TYPE STRING,
HINS_NUM TYPE STRING,
HINS_CARD_NUM TYPE STRING,
CONT_PER1 TYPE STRING,
CONT_PER2 TYPE STRING,
SORT_BILL TYPE STRING,
INDV_INVP TYPE STRING,
IB_WO_COC TYPE STRING,
FB_WO_COC TYPE STRING,
FB_ON_DIAG TYPE STRING,
IB_DAYS TYPE STRING,
INT_BILL TYPE STRING,
INVP_CTRL TYPE STRING,
MAN_INV_PROC TYPE STRING,
INV_COMP TYPE STRING,
PFI_PRINT TYPE STRING,
IV_REQD TYPE STRING,
IB_INTRVL TYPE STRING,
FB_INTRVL TYPE STRING,
IV_RMNDR TYPE STRING,
IVR_RMNDR_DAYS TYPE STRING,
IVR_ON_DIAG TYPE STRING,
COMTY TYPE STRING,
IVR_DIAG_PRINT TYPE STRING,
IVR_ADMN_NOTIF TYPE STRING,
IVR_DISCH_NOTIF TYPE STRING,
COPAY_REQD TYPE STRING,
COPAY_PROC TYPE STRING,
SOCIAL_INS TYPE STRING,
IVR_EXT_INTRVL TYPE STRING,
IVR_CRT_INTRVL TYPE STRING,
START_DAY TYPE STRING,
PSIGN TYPE STRING,
INS_CURR TYPE STRING,
CRT_USR TYPE STRING,
CRT_DAT TYPE STRING,
CHG_USR TYPE STRING,
CHG_DAT TYPE STRING,
DEL_USR TYPE STRING,
DEL_DAT TYPE STRING,
DEL_FLG TYPE STRING,
TAX_CLASS TYPE STRING,
DCP_HCM TYPE STRING,
PPA_SNAME TYPE STRING,
INS_SNAME TYPE STRING,
PPA_NUM TYPE STRING,
REJ_DL_IV TYPE STRING,
IV_PROC_CH TYPE STRING,
EA_NUM TYPE STRING,
TIERS_PAY_PROC TYPE STRING,
PROC_LKF_ACC TYPE STRING,
INS_NUM_LKF_CAT TYPE STRING,
ADR_KIND TYPE STRING,
/ISHFR/COMP_INS TYPE STRING,
/ISHFR/ELSASS TYPE STRING,
/ISHFR/LIMPDVTY TYPE STRING,
/ISHFR/WODAYFR TYPE STRING,
/ISHFR/HIST TYPE STRING,
/ISHFR/COUNC_GEN TYPE STRING,
BAG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNINS_SCR_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_RNINS_SCR_STR-MANDT sy-vline 
WA_RNINS_SCR_STR-PARTNER sy-vline 
WA_RNINS_SCR_STR-INS_PROV_GRP sy-vline 
WA_RNINS_SCR_STR-INS_PROV_TYPE sy-vline 
WA_RNINS_SCR_STR-TYPE_CP_REL sy-vline 
WA_RNINS_SCR_STR-HINS_NUM sy-vline 
WA_RNINS_SCR_STR-HINS_CARD_NUM sy-vline 
WA_RNINS_SCR_STR-CONT_PER1 sy-vline 
WA_RNINS_SCR_STR-CONT_PER2 sy-vline 
WA_RNINS_SCR_STR-SORT_BILL sy-vline 
WA_RNINS_SCR_STR-INDV_INVP sy-vline 
WA_RNINS_SCR_STR-IB_WO_COC sy-vline 
WA_RNINS_SCR_STR-FB_WO_COC sy-vline 
WA_RNINS_SCR_STR-FB_ON_DIAG sy-vline 
WA_RNINS_SCR_STR-IB_DAYS sy-vline 
WA_RNINS_SCR_STR-INT_BILL sy-vline 
WA_RNINS_SCR_STR-INVP_CTRL sy-vline 
WA_RNINS_SCR_STR-MAN_INV_PROC sy-vline 
WA_RNINS_SCR_STR-INV_COMP sy-vline 
WA_RNINS_SCR_STR-PFI_PRINT sy-vline 
WA_RNINS_SCR_STR-IV_REQD sy-vline 
WA_RNINS_SCR_STR-IB_INTRVL sy-vline 
WA_RNINS_SCR_STR-FB_INTRVL sy-vline 
WA_RNINS_SCR_STR-IV_RMNDR sy-vline 
WA_RNINS_SCR_STR-IVR_RMNDR_DAYS sy-vline 
WA_RNINS_SCR_STR-IVR_ON_DIAG sy-vline 
WA_RNINS_SCR_STR-COMTY sy-vline 
WA_RNINS_SCR_STR-IVR_DIAG_PRINT sy-vline 
WA_RNINS_SCR_STR-IVR_ADMN_NOTIF sy-vline 
WA_RNINS_SCR_STR-IVR_DISCH_NOTIF sy-vline 
WA_RNINS_SCR_STR-COPAY_REQD sy-vline 
WA_RNINS_SCR_STR-COPAY_PROC sy-vline 
WA_RNINS_SCR_STR-SOCIAL_INS sy-vline 
WA_RNINS_SCR_STR-IVR_EXT_INTRVL sy-vline 
WA_RNINS_SCR_STR-IVR_CRT_INTRVL sy-vline 
WA_RNINS_SCR_STR-START_DAY sy-vline 
WA_RNINS_SCR_STR-PSIGN sy-vline 
WA_RNINS_SCR_STR-INS_CURR sy-vline 
WA_RNINS_SCR_STR-CRT_USR sy-vline 
WA_RNINS_SCR_STR-CRT_DAT sy-vline 
WA_RNINS_SCR_STR-CHG_USR sy-vline 
WA_RNINS_SCR_STR-CHG_DAT sy-vline 
WA_RNINS_SCR_STR-DEL_USR sy-vline 
WA_RNINS_SCR_STR-DEL_DAT sy-vline 
WA_RNINS_SCR_STR-DEL_FLG sy-vline 
WA_RNINS_SCR_STR-TAX_CLASS sy-vline 
WA_RNINS_SCR_STR-DCP_HCM sy-vline 
WA_RNINS_SCR_STR-PPA_SNAME sy-vline 
WA_RNINS_SCR_STR-INS_SNAME sy-vline 
WA_RNINS_SCR_STR-PPA_NUM sy-vline 
WA_RNINS_SCR_STR-REJ_DL_IV sy-vline 
WA_RNINS_SCR_STR-IV_PROC_CH sy-vline 
WA_RNINS_SCR_STR-EA_NUM sy-vline 
WA_RNINS_SCR_STR-TIERS_PAY_PROC sy-vline 
WA_RNINS_SCR_STR-PROC_LKF_ACC sy-vline 
WA_RNINS_SCR_STR-INS_NUM_LKF_CAT sy-vline 
WA_RNINS_SCR_STR-ADR_KIND sy-vline 
WA_RNINS_SCR_STR-/ISHFR/COMP_INS sy-vline 
WA_RNINS_SCR_STR-/ISHFR/ELSASS sy-vline 
WA_RNINS_SCR_STR-/ISHFR/LIMPDVTY sy-vline 
WA_RNINS_SCR_STR-/ISHFR/WODAYFR sy-vline 
WA_RNINS_SCR_STR-/ISHFR/HIST sy-vline 
WA_RNINS_SCR_STR-/ISHFR/COUNC_GEN sy-vline 
WA_RNINS_SCR_STR-BAG sy-vline      INTO ld_text SEPARATED BY SPACE.

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