ABAP Select data from SAP table ARUN_ARULE_CA_S into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ARUN_ARULE_CA_S
*  INTO TABLE @DATA(IT_ARUN_ARULE_CA_S2).
*--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_ARUN_ARULE_CA_S INDEX 1 INTO DATA(WA_ARUN_ARULE_CA_S2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ARUN_ARULE_CA_S>-ARULE = 1.
<ARUN_ARULE_CA_S>-RQDAT = 1.
<ARUN_ARULE_CA_S>-DELIV_SCHED = 1.
<ARUN_ARULE_CA_S>-PO_FROM = 1.
<ARUN_ARULE_CA_S>-PO_TO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ARUN_ARULE_CA_S-PP_FROM, sy-vline,
  WA_ARUN_ARULE_CA_S-PP_TO, sy-vline,
  WA_ARUN_ARULE_CA_S-SN_FROM, sy-vline,
  WA_ARUN_ARULE_CA_S-SN_TO, sy-vline,
  WA_ARUN_ARULE_CA_S-DLREG, sy-vline,
  WA_ARUN_ARULE_CA_S-LGONR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ARUN_ARULE_CA_S 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_ARUN_ARULE_CA_S 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_ARUN_ARULE_CA_S INTO WA_ARUN_ARULE_CA_S.


*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_ARUN_ARULE_CA_S_STR, 
ARULE TYPE STRING,
RQDAT TYPE STRING,
DELIV_SCHED TYPE STRING,
PO_FROM TYPE STRING,
PO_TO TYPE STRING,
PP_FROM TYPE STRING,
PP_TO TYPE STRING,
SN_FROM TYPE STRING,
SN_TO TYPE STRING,
DLREG TYPE STRING,
LGONR TYPE STRING,
RCAT TYPE STRING,
SCAT TYPE STRING,
CHARG TYPE STRING,
ELIKZ TYPE STRING,
LOEKZ TYPE STRING,
MENGE TYPE STRING,
DELLOC_COMPLETE TYPE STRING,
SN_RESTORE TYPE STRING,
STDAT TYPE STRING,
SEASONS TYPE STRING,
BATCH_DAYS TYPE STRING,
DATE_REACTION TYPE STRING,
SOREG TYPE STRING,
ARTYP TYPE STRING,
WERKS TYPE STRING,
STORAGE_DAYS TYPE STRING,
ALLAD TYPE STRING,
ALLRS TYPE STRING,
REREG TYPE STRING,
RSOREG TYPE STRING,
RQDAT_STO TYPE STRING,
TECH_COMPLTD TYPE STRING,
FIXMG TYPE STRING,
GR_ELIKZ TYPE STRING,
GR_LGONR TYPE STRING,
FSH_CANDATE TYPE STRING,
PLANT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ARUN_ARULE_CA_S_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_ARUN_ARULE_CA_S_STR-ARULE sy-vline 
WA_ARUN_ARULE_CA_S_STR-RQDAT sy-vline 
WA_ARUN_ARULE_CA_S_STR-DELIV_SCHED sy-vline 
WA_ARUN_ARULE_CA_S_STR-PO_FROM sy-vline 
WA_ARUN_ARULE_CA_S_STR-PO_TO sy-vline 
WA_ARUN_ARULE_CA_S_STR-PP_FROM sy-vline 
WA_ARUN_ARULE_CA_S_STR-PP_TO sy-vline 
WA_ARUN_ARULE_CA_S_STR-SN_FROM sy-vline 
WA_ARUN_ARULE_CA_S_STR-SN_TO sy-vline 
WA_ARUN_ARULE_CA_S_STR-DLREG sy-vline 
WA_ARUN_ARULE_CA_S_STR-LGONR sy-vline 
WA_ARUN_ARULE_CA_S_STR-RCAT sy-vline 
WA_ARUN_ARULE_CA_S_STR-SCAT sy-vline 
WA_ARUN_ARULE_CA_S_STR-CHARG sy-vline 
WA_ARUN_ARULE_CA_S_STR-ELIKZ sy-vline 
WA_ARUN_ARULE_CA_S_STR-LOEKZ sy-vline 
WA_ARUN_ARULE_CA_S_STR-MENGE sy-vline 
WA_ARUN_ARULE_CA_S_STR-DELLOC_COMPLETE sy-vline 
WA_ARUN_ARULE_CA_S_STR-SN_RESTORE sy-vline 
WA_ARUN_ARULE_CA_S_STR-STDAT sy-vline 
WA_ARUN_ARULE_CA_S_STR-SEASONS sy-vline 
WA_ARUN_ARULE_CA_S_STR-BATCH_DAYS sy-vline 
WA_ARUN_ARULE_CA_S_STR-DATE_REACTION sy-vline 
WA_ARUN_ARULE_CA_S_STR-SOREG sy-vline 
WA_ARUN_ARULE_CA_S_STR-ARTYP sy-vline 
WA_ARUN_ARULE_CA_S_STR-WERKS sy-vline 
WA_ARUN_ARULE_CA_S_STR-STORAGE_DAYS sy-vline 
WA_ARUN_ARULE_CA_S_STR-ALLAD sy-vline 
WA_ARUN_ARULE_CA_S_STR-ALLRS sy-vline 
WA_ARUN_ARULE_CA_S_STR-REREG sy-vline 
WA_ARUN_ARULE_CA_S_STR-RSOREG sy-vline 
WA_ARUN_ARULE_CA_S_STR-RQDAT_STO sy-vline 
WA_ARUN_ARULE_CA_S_STR-TECH_COMPLTD sy-vline 
WA_ARUN_ARULE_CA_S_STR-FIXMG sy-vline 
WA_ARUN_ARULE_CA_S_STR-GR_ELIKZ sy-vline 
WA_ARUN_ARULE_CA_S_STR-GR_LGONR sy-vline 
WA_ARUN_ARULE_CA_S_STR-FSH_CANDATE sy-vline 
WA_ARUN_ARULE_CA_S_STR-PLANT sy-vline      INTO ld_text SEPARATED BY SPACE.

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