ABAP Select data from SAP table REEX_GUI_ACCT_STATEMENT_L into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP REEX_GUI_ACCT_STATEMENT_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 REEX_GUI_ACCT_STATEMENT_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 REEX_GUI_ACCT_STATEMENT_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_REEX_GUI_ACCT_STATEMENT_L TYPE STANDARD TABLE OF REEX_GUI_ACCT_STATEMENT_L,
      WA_REEX_GUI_ACCT_STATEMENT_L TYPE REEX_GUI_ACCT_STATEMENT_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: <REEX_GUI_ACCT_STATEMENT_L> TYPE REEX_GUI_ACCT_STATEMENT_L.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REEX_GUI_ACCT_STATEMENT_L
*  INTO TABLE @DATA(IT_REEX_GUI_ACCT_STATEMENT_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_REEX_GUI_ACCT_STATEMENT_L INDEX 1 INTO DATA(WA_REEX_GUI_ACCT_STATEMENT_L2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REEX_GUI_ACCT_STATEMENT_L>-CUSTOMER = 1.
<REEX_GUI_ACCT_STATEMENT_L>-DOCNUMBER = 1.
<REEX_GUI_ACCT_STATEMENT_L>-DOCITEMNO = 1.
<REEX_GUI_ACCT_STATEMENT_L>-DOCITEMID = 1.
<REEX_GUI_ACCT_STATEMENT_L>-PARTNER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REEX_GUI_ACCT_STATEMENT_L-BUKRS, sy-vline,
  WA_REEX_GUI_ACCT_STATEMENT_L-CONTRACT, sy-vline,
  WA_REEX_GUI_ACCT_STATEMENT_L-OBJNR, sy-vline,
  WA_REEX_GUI_ACCT_STATEMENT_L-OBJNRCALC, sy-vline,
  WA_REEX_GUI_ACCT_STATEMENT_L-FISCALYEAR, sy-vline,
  WA_REEX_GUI_ACCT_STATEMENT_L-PSTNGPERIOD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REEX_GUI_ACCT_STATEMENT_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_REEX_GUI_ACCT_STATEMENT_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_REEX_GUI_ACCT_STATEMENT_L INTO WA_REEX_GUI_ACCT_STATEMENT_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 CUSTOMER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REEX_GUI_ACCT_STATEMENT_L-CUSTOMER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REEX_GUI_ACCT_STATEMENT_L-CUSTOMER.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit GJAHR, internal->external for field FISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_REEX_GUI_ACCT_STATEMENT_L-FISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REEX_GUI_ACCT_STATEMENT_L-FISCALYEAR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit PERI6, internal->external for field XPSTNGPER
CALL FUNCTION 'CONVERSION_EXIT_PERI6_OUTPUT'
  EXPORTING
    input =                      WA_REEX_GUI_ACCT_STATEMENT_L-XPSTNGPER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REEX_GUI_ACCT_STATEMENT_L-XPSTNGPER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VENDOR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REEX_GUI_ACCT_STATEMENT_L-VENDOR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REEX_GUI_ACCT_STATEMENT_L-VENDOR.
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_REEX_GUI_ACCT_STATEMENT_L_STR, 
CUSTOMER TYPE STRING,
DOCNUMBER TYPE STRING,
DOCITEMNO TYPE STRING,
DOCITEMID TYPE STRING,
PARTNER TYPE STRING,
BUKRS TYPE STRING,
CONTRACT TYPE STRING,
OBJNR TYPE STRING,
OBJNRCALC TYPE STRING,
FISCALYEAR TYPE STRING,
PSTNGPERIOD TYPE STRING,
PROCESSID TYPE STRING,
PSTNGPROCEDURE TYPE STRING,
REFDOCID TYPE STRING,
REFITEMNO TYPE STRING,
LOGSYSTEM TYPE STRING,
CONDTYPE TYPE STRING,
ISADVANCEPAYMENT TYPE STRING,
FLOWTYPE TYPE STRING,
PSTNGDATE TYPE STRING,
DOCDATE TYPE STRING,
BLINEDATE TYPE STRING,
DCDEBITAMOUNT TYPE STRING,
DCCREDITAMOUNT TYPE STRING,
DCBALANCE TYPE STRING,
TAXAMOUNT TYPE STRING,
CURRENCY TYPE STRING,
TAXTYPE TYPE STRING,
TAXGROUP TYPE STRING,
CLEARINGSTATUS TYPE STRING,
XMACCTSTMNTITEM TYPE STRING,
XMACCTSTMNTHDR TYPE STRING,
OBJ_TYPE TYPE STRING,
OBJ_KEY TYPE STRING,
DUNNBLOCK TYPE STRING,
DUNNKEY TYPE STRING,
DUNNDATE TYPE STRING,
DUNNLEVEL TYPE STRING,
DUNNAREA TYPE STRING,
PYMTMETH TYPE STRING,
PYMTTERM TYPE STRING,
CALCFROM TYPE STRING,
CALCTO TYPE STRING,
REVID TYPE STRING,
DOCTYPE TYPE STRING,
CLEARINGDATE TYPE STRING,
CLRDOCID TYPE STRING,
PROCESSTITLE TYPE STRING,
XCONDTYPEM TYPE STRING,
XFLOWTYPE TYPE STRING,
XTAXTYPE TYPE STRING,
XTAXGROUP TYPE STRING,
IDENTCALC TYPE STRING,
XDUNNBLOCK TYPE STRING,
XDUNNKEY TYPE STRING,
XDUNNAREA TYPE STRING,
XPYMTMETH TYPE STRING,
XPYMTTERM TYPE STRING,
XREVID TYPE STRING,
CUMBALANCE TYPE STRING,
XPSTNGPER TYPE STRING,
VENDOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REEX_GUI_ACCT_STATEMENT_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_REEX_GUI_ACCT_STATEMENT_L_STR-CUSTOMER sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-DOCNUMBER sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-DOCITEMNO sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-DOCITEMID sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-PARTNER sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-BUKRS sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-CONTRACT sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-OBJNR sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-OBJNRCALC sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-FISCALYEAR sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-PSTNGPERIOD sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-PROCESSID sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-PSTNGPROCEDURE sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-REFDOCID sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-REFITEMNO sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-LOGSYSTEM sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-CONDTYPE sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-ISADVANCEPAYMENT sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-FLOWTYPE sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-PSTNGDATE sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-DOCDATE sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-BLINEDATE sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-DCDEBITAMOUNT sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-DCCREDITAMOUNT sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-DCBALANCE sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-TAXAMOUNT sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-CURRENCY sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-TAXTYPE sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-TAXGROUP sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-CLEARINGSTATUS sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-XMACCTSTMNTITEM sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-XMACCTSTMNTHDR sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-OBJ_TYPE sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-OBJ_KEY sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-DUNNBLOCK sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-DUNNKEY sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-DUNNDATE sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-DUNNLEVEL sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-DUNNAREA sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-PYMTMETH sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-PYMTTERM sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-CALCFROM sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-CALCTO sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-REVID sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-DOCTYPE sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-CLEARINGDATE sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-CLRDOCID sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-PROCESSTITLE sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-XCONDTYPEM sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-XFLOWTYPE sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-XTAXTYPE sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-XTAXGROUP sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-IDENTCALC sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-XDUNNBLOCK sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-XDUNNKEY sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-XDUNNAREA sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-XPYMTMETH sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-XPYMTTERM sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-XREVID sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-CUMBALANCE sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-XPSTNGPER sy-vline 
WA_REEX_GUI_ACCT_STATEMENT_L_STR-VENDOR sy-vline      INTO ld_text SEPARATED BY SPACE.

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