ABAP Select data from SAP table REIS_CN_PE_L into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REIS_CN_PE_L
*  INTO TABLE @DATA(IT_REIS_CN_PE_L2).
*--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_REIS_CN_PE_L INDEX 1 INTO DATA(WA_REIS_CN_PE_L2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REIS_CN_PE_L>-GEN_OBJTYPE = 1.
<REIS_CN_PE_L>-GEN_OBJNR = 1.
<REIS_CN_PE_L>-GEN_CONTRACT = 1.
<REIS_CN_PE_L>-GEN_PARTNER1 = 1.
<REIS_CN_PE_L>-GEN_PARTNER2 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REIS_CN_PE_L-ALVROWS, sy-vline,
  WA_REIS_CN_PE_L-BUKRS, sy-vline,
  WA_REIS_CN_PE_L-RECNNR, sy-vline,
  WA_REIS_CN_PE_L-RECNTXT, sy-vline,
  WA_REIS_CN_PE_L-RECNBEG, sy-vline,
  WA_REIS_CN_PE_L-RECNEND1ST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REIS_CN_PE_L 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_REIS_CN_PE_L 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_REIS_CN_PE_L INTO WA_REIS_CN_PE_L.


*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 GEN_PARTNER1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REIS_CN_PE_L-GEN_PARTNER1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REIS_CN_PE_L-GEN_PARTNER1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GEN_PARTNER2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REIS_CN_PE_L-GEN_PARTNER2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REIS_CN_PE_L-GEN_PARTNER2.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit REDAT, internal->external for field RECNENDABS
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_REIS_CN_PE_L-RECNENDABS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REIS_CN_PE_L-RECNENDABS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit REDAT, internal->external for field RNENDMAX
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_REIS_CN_PE_L-RNENDMAX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REIS_CN_PE_L-RNENDMAX.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SWENR, internal->external for field BENOCN
CALL FUNCTION 'CONVERSION_EXIT_SWENR_OUTPUT'
  EXPORTING
    input =                      WA_REIS_CN_PE_L-BENOCN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REIS_CN_PE_L-BENOCN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PARTNER_BP1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REIS_CN_PE_L-PARTNER_BP1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REIS_CN_PE_L-PARTNER_BP1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SXIDN, internal->external for field SMTP_ADDR_BP1
CALL FUNCTION 'CONVERSION_EXIT_SXIDN_OUTPUT'
  EXPORTING
    input =                      WA_REIS_CN_PE_L-SMTP_ADDR_BP1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REIS_CN_PE_L-SMTP_ADDR_BP1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PARTNER_BP2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REIS_CN_PE_L-PARTNER_BP2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REIS_CN_PE_L-PARTNER_BP2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SXIDN, internal->external for field SMTP_ADDR_BP2
CALL FUNCTION 'CONVERSION_EXIT_SXIDN_OUTPUT'
  EXPORTING
    input =                      WA_REIS_CN_PE_L-SMTP_ADDR_BP2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REIS_CN_PE_L-SMTP_ADDR_BP2.
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_REIS_CN_PE_L_STR, 
GEN_OBJTYPE TYPE STRING,
GEN_OBJNR TYPE STRING,
GEN_CONTRACT TYPE STRING,
GEN_PARTNER1 TYPE STRING,
GEN_PARTNER2 TYPE STRING,
ALVROWS TYPE STRING,
BUKRS TYPE STRING,
RECNNR TYPE STRING,
RECNTXT TYPE STRING,
RECNBEG TYPE STRING,
RECNEND1ST TYPE STRING,
RECNENDABS TYPE STRING,
RNHASRULE TYPE STRING,
RNEND1ST TYPE STRING,
RNENDNEW TYPE STRING,
PESTATE TYPE STRING,
XPESTATE TYPE STRING,
NTALLOWEDPAR TYPE STRING,
NTRECEIPTFROMPAR TYPE STRING,
NTRECEIPTTOPAR TYPE STRING,
NTALLOWEDOWN TYPE STRING,
NTRECEIPTFROMOWN TYPE STRING,
NTRECEIPTTOOWN TYPE STRING,
NTPER TYPE STRING,
RECNNOTRECEIPT TYPE STRING,
RECNNOTREASON TYPE STRING,
XRECNNOTREASON TYPE STRING,
RECNDAKTKU TYPE STRING,
RNEXTDATE TYPE STRING,
RNNOTDATE TYPE STRING,
ICONRNNOTDATE TYPE STRING,
XRNDECISION TYPE STRING,
RNRULETYPE TYPE STRING,
XRNRULETYPE TYPE STRING,
RNENDMAX TYPE STRING,
XRNRULE TYPE STRING,
BENOCN TYPE STRING,
POSSDATEFROM TYPE STRING,
POSSDATETO TYPE STRING,
RECISVALIDFROM TYPE STRING,
RECISVALIDTO TYPE STRING,
NTTYPE TYPE STRING,
XNTTYPE TYPE STRING,
NTPROC TYPE STRING,
XNTPROC TYPE STRING,
XTERMNT TYPE STRING,
ROLE_BP1 TYPE STRING,
XROLE_BP1 TYPE STRING,
PARTNER_BP1 TYPE STRING,
XPARTNER_BP1 TYPE STRING,
TEL_NUMBER_LONG_BP1 TYPE STRING,
FAX_NUMBER_LONG_BP1 TYPE STRING,
SMTP_ADDR_BP1 TYPE STRING,
XNAME_BP1 TYPE STRING,
STREET_BP1 TYPE STRING,
HOUSE_NUM1_BP1 TYPE STRING,
POST_CODE1_BP1 TYPE STRING,
CITY1_BP1 TYPE STRING,
CITY2_BP1 TYPE STRING,
REGION_BP1 TYPE STRING,
PO_BOX_BP1 TYPE STRING,
POST_CODE2_BP1 TYPE STRING,
ROLECAT_BP1 TYPE STRING,
ADDRTYPE_BP1 TYPE STRING,
HOUSE_NUM2_BP1 TYPE STRING,
ROLE_BP2 TYPE STRING,
XROLE_BP2 TYPE STRING,
PARTNER_BP2 TYPE STRING,
XPARTNER_BP2 TYPE STRING,
TEL_NUMBER_LONG_BP2 TYPE STRING,
FAX_NUMBER_LONG_BP2 TYPE STRING,
SMTP_ADDR_BP2 TYPE STRING,
XNAME_BP2 TYPE STRING,
STREET_BP2 TYPE STRING,
HOUSE_NUM1_BP2 TYPE STRING,
POST_CODE1_BP2 TYPE STRING,
CITY1_BP2 TYPE STRING,
CITY2_BP2 TYPE STRING,
REGION_BP2 TYPE STRING,
PO_BOX_BP2 TYPE STRING,
POST_CODE2_BP2 TYPE STRING,
ROLECAT_BP2 TYPE STRING,
ADDRTYPE_BP2 TYPE STRING,
HOUSE_NUM2_BP2 TYPE STRING,
RELEVANTEVAL TYPE STRING,
XRELEVANTEVAL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REIS_CN_PE_L_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_REIS_CN_PE_L_STR-GEN_OBJTYPE sy-vline 
WA_REIS_CN_PE_L_STR-GEN_OBJNR sy-vline 
WA_REIS_CN_PE_L_STR-GEN_CONTRACT sy-vline 
WA_REIS_CN_PE_L_STR-GEN_PARTNER1 sy-vline 
WA_REIS_CN_PE_L_STR-GEN_PARTNER2 sy-vline 
WA_REIS_CN_PE_L_STR-ALVROWS sy-vline 
WA_REIS_CN_PE_L_STR-BUKRS sy-vline 
WA_REIS_CN_PE_L_STR-RECNNR sy-vline 
WA_REIS_CN_PE_L_STR-RECNTXT sy-vline 
WA_REIS_CN_PE_L_STR-RECNBEG sy-vline 
WA_REIS_CN_PE_L_STR-RECNEND1ST sy-vline 
WA_REIS_CN_PE_L_STR-RECNENDABS sy-vline 
WA_REIS_CN_PE_L_STR-RNHASRULE sy-vline 
WA_REIS_CN_PE_L_STR-RNEND1ST sy-vline 
WA_REIS_CN_PE_L_STR-RNENDNEW sy-vline 
WA_REIS_CN_PE_L_STR-PESTATE sy-vline 
WA_REIS_CN_PE_L_STR-XPESTATE sy-vline 
WA_REIS_CN_PE_L_STR-NTALLOWEDPAR sy-vline 
WA_REIS_CN_PE_L_STR-NTRECEIPTFROMPAR sy-vline 
WA_REIS_CN_PE_L_STR-NTRECEIPTTOPAR sy-vline 
WA_REIS_CN_PE_L_STR-NTALLOWEDOWN sy-vline 
WA_REIS_CN_PE_L_STR-NTRECEIPTFROMOWN sy-vline 
WA_REIS_CN_PE_L_STR-NTRECEIPTTOOWN sy-vline 
WA_REIS_CN_PE_L_STR-NTPER sy-vline 
WA_REIS_CN_PE_L_STR-RECNNOTRECEIPT sy-vline 
WA_REIS_CN_PE_L_STR-RECNNOTREASON sy-vline 
WA_REIS_CN_PE_L_STR-XRECNNOTREASON sy-vline 
WA_REIS_CN_PE_L_STR-RECNDAKTKU sy-vline 
WA_REIS_CN_PE_L_STR-RNEXTDATE sy-vline 
WA_REIS_CN_PE_L_STR-RNNOTDATE sy-vline 
WA_REIS_CN_PE_L_STR-ICONRNNOTDATE sy-vline 
WA_REIS_CN_PE_L_STR-XRNDECISION sy-vline 
WA_REIS_CN_PE_L_STR-RNRULETYPE sy-vline 
WA_REIS_CN_PE_L_STR-XRNRULETYPE sy-vline 
WA_REIS_CN_PE_L_STR-RNENDMAX sy-vline 
WA_REIS_CN_PE_L_STR-XRNRULE sy-vline 
WA_REIS_CN_PE_L_STR-BENOCN sy-vline 
WA_REIS_CN_PE_L_STR-POSSDATEFROM sy-vline 
WA_REIS_CN_PE_L_STR-POSSDATETO sy-vline 
WA_REIS_CN_PE_L_STR-RECISVALIDFROM sy-vline 
WA_REIS_CN_PE_L_STR-RECISVALIDTO sy-vline 
WA_REIS_CN_PE_L_STR-NTTYPE sy-vline 
WA_REIS_CN_PE_L_STR-XNTTYPE sy-vline 
WA_REIS_CN_PE_L_STR-NTPROC sy-vline 
WA_REIS_CN_PE_L_STR-XNTPROC sy-vline 
WA_REIS_CN_PE_L_STR-XTERMNT sy-vline 
WA_REIS_CN_PE_L_STR-ROLE_BP1 sy-vline 
WA_REIS_CN_PE_L_STR-XROLE_BP1 sy-vline 
WA_REIS_CN_PE_L_STR-PARTNER_BP1 sy-vline 
WA_REIS_CN_PE_L_STR-XPARTNER_BP1 sy-vline 
WA_REIS_CN_PE_L_STR-TEL_NUMBER_LONG_BP1 sy-vline 
WA_REIS_CN_PE_L_STR-FAX_NUMBER_LONG_BP1 sy-vline 
WA_REIS_CN_PE_L_STR-SMTP_ADDR_BP1 sy-vline 
WA_REIS_CN_PE_L_STR-XNAME_BP1 sy-vline 
WA_REIS_CN_PE_L_STR-STREET_BP1 sy-vline 
WA_REIS_CN_PE_L_STR-HOUSE_NUM1_BP1 sy-vline 
WA_REIS_CN_PE_L_STR-POST_CODE1_BP1 sy-vline 
WA_REIS_CN_PE_L_STR-CITY1_BP1 sy-vline 
WA_REIS_CN_PE_L_STR-CITY2_BP1 sy-vline 
WA_REIS_CN_PE_L_STR-REGION_BP1 sy-vline 
WA_REIS_CN_PE_L_STR-PO_BOX_BP1 sy-vline 
WA_REIS_CN_PE_L_STR-POST_CODE2_BP1 sy-vline 
WA_REIS_CN_PE_L_STR-ROLECAT_BP1 sy-vline 
WA_REIS_CN_PE_L_STR-ADDRTYPE_BP1 sy-vline 
WA_REIS_CN_PE_L_STR-HOUSE_NUM2_BP1 sy-vline 
WA_REIS_CN_PE_L_STR-ROLE_BP2 sy-vline 
WA_REIS_CN_PE_L_STR-XROLE_BP2 sy-vline 
WA_REIS_CN_PE_L_STR-PARTNER_BP2 sy-vline 
WA_REIS_CN_PE_L_STR-XPARTNER_BP2 sy-vline 
WA_REIS_CN_PE_L_STR-TEL_NUMBER_LONG_BP2 sy-vline 
WA_REIS_CN_PE_L_STR-FAX_NUMBER_LONG_BP2 sy-vline 
WA_REIS_CN_PE_L_STR-SMTP_ADDR_BP2 sy-vline 
WA_REIS_CN_PE_L_STR-XNAME_BP2 sy-vline 
WA_REIS_CN_PE_L_STR-STREET_BP2 sy-vline 
WA_REIS_CN_PE_L_STR-HOUSE_NUM1_BP2 sy-vline 
WA_REIS_CN_PE_L_STR-POST_CODE1_BP2 sy-vline 
WA_REIS_CN_PE_L_STR-CITY1_BP2 sy-vline 
WA_REIS_CN_PE_L_STR-CITY2_BP2 sy-vline 
WA_REIS_CN_PE_L_STR-REGION_BP2 sy-vline 
WA_REIS_CN_PE_L_STR-PO_BOX_BP2 sy-vline 
WA_REIS_CN_PE_L_STR-POST_CODE2_BP2 sy-vline 
WA_REIS_CN_PE_L_STR-ROLECAT_BP2 sy-vline 
WA_REIS_CN_PE_L_STR-ADDRTYPE_BP2 sy-vline 
WA_REIS_CN_PE_L_STR-HOUSE_NUM2_BP2 sy-vline 
WA_REIS_CN_PE_L_STR-RELEVANTEVAL sy-vline 
WA_REIS_CN_PE_L_STR-XRELEVANTEVAL sy-vline      INTO ld_text SEPARATED BY SPACE.

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