ABAP Select data from SAP table V_T881_ISSR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_T881_ISSR 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 V_T881_ISSR. 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 V_T881_ISSR 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_V_T881_ISSR TYPE STANDARD TABLE OF V_T881_ISSR,
      WA_V_T881_ISSR TYPE V_T881_ISSR,
      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: <V_T881_ISSR> TYPE V_T881_ISSR.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V_T881_ISSR.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V_T881_ISSR
  INTO TABLE IT_V_T881_ISSR.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_T881_ISSR
*  INTO TABLE @DATA(IT_V_T881_ISSR2).
*--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_V_T881_ISSR INDEX 1 INTO DATA(WA_V_T881_ISSR2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_T881_ISSR ASSIGNING <V_T881_ISSR>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_T881_ISSR>-MANDT = 1.
<V_T881_ISSR>-RLDNR = 1.
<V_T881_ISSR>-GCURR = 1.
<V_T881_ISSR>-CLASS = 1.
<V_T881_ISSR>-TYP = 1.

ENDLOOP.

LOOP AT IT_V_T881_ISSR INTO WA_V_T881_ISSR.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_T881_ISSR-TRCUR, sy-vline,
  WA_V_T881_ISSR-LCCUR, sy-vline,
  WA_V_T881_ISSR-RCCUR, sy-vline,
  WA_V_T881_ISSR-OCCUR, sy-vline,
  WA_V_T881_ISSR-QUANT, sy-vline,
  WA_V_T881_ISSR-ATQNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_T881_ISSR 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_V_T881_ISSR 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_V_T881_ISSR INTO WA_V_T881_ISSR.


*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 RLDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_T881_ISSR-RLDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_T881_ISSR-RLDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DLDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_T881_ISSR-DLDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_T881_ISSR-DLDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KLDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_T881_ISSR-KLDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_T881_ISSR-KLDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_T881_ISSR-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_T881_ISSR-LOGSYS.
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_V_T881_ISSR_STR, 
MANDT TYPE STRING,
RLDNR TYPE STRING,
GCURR TYPE STRING,
CLASS TYPE STRING,
TYP TYPE STRING,
TRCUR TYPE STRING,
LCCUR TYPE STRING,
RCCUR TYPE STRING,
OCCUR TYPE STRING,
QUANT TYPE STRING,
ATQNT TYPE STRING,
TAB TYPE STRING,
RCOPY TYPE STRING,
SHKZ TYPE STRING,
GLSIP TYPE STRING,
VORTRAG TYPE STRING,
DLDNR TYPE STRING,
XDLDNR TYPE STRING,
CURT1 TYPE STRING,
CURT2 TYPE STRING,
CURT3 TYPE STRING,
V2POST TYPE STRING,
LCTYP TYPE STRING,
FIX TYPE STRING,
POST TYPE STRING,
ROLLUP TYPE STRING,
DEPLD TYPE STRING,
APPL TYPE STRING,
SUBAPPL TYPE STRING,
KOMP TYPE STRING,
GZLEDGER TYPE STRING,
EXIT TYPE STRING,
KLDNR TYPE STRING,
LOGSYS TYPE STRING,
VALUTYP TYPE STRING,
GCOMPRESS TYPE STRING,
SPLITMETHD TYPE STRING,
DATE_DET_POPER TYPE STRING,
NAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_T881_ISSR_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_V_T881_ISSR_STR-MANDT sy-vline 
WA_V_T881_ISSR_STR-RLDNR sy-vline 
WA_V_T881_ISSR_STR-GCURR sy-vline 
WA_V_T881_ISSR_STR-CLASS sy-vline 
WA_V_T881_ISSR_STR-TYP sy-vline 
WA_V_T881_ISSR_STR-TRCUR sy-vline 
WA_V_T881_ISSR_STR-LCCUR sy-vline 
WA_V_T881_ISSR_STR-RCCUR sy-vline 
WA_V_T881_ISSR_STR-OCCUR sy-vline 
WA_V_T881_ISSR_STR-QUANT sy-vline 
WA_V_T881_ISSR_STR-ATQNT sy-vline 
WA_V_T881_ISSR_STR-TAB sy-vline 
WA_V_T881_ISSR_STR-RCOPY sy-vline 
WA_V_T881_ISSR_STR-SHKZ sy-vline 
WA_V_T881_ISSR_STR-GLSIP sy-vline 
WA_V_T881_ISSR_STR-VORTRAG sy-vline 
WA_V_T881_ISSR_STR-DLDNR sy-vline 
WA_V_T881_ISSR_STR-XDLDNR sy-vline 
WA_V_T881_ISSR_STR-CURT1 sy-vline 
WA_V_T881_ISSR_STR-CURT2 sy-vline 
WA_V_T881_ISSR_STR-CURT3 sy-vline 
WA_V_T881_ISSR_STR-V2POST sy-vline 
WA_V_T881_ISSR_STR-LCTYP sy-vline 
WA_V_T881_ISSR_STR-FIX sy-vline 
WA_V_T881_ISSR_STR-POST sy-vline 
WA_V_T881_ISSR_STR-ROLLUP sy-vline 
WA_V_T881_ISSR_STR-DEPLD sy-vline 
WA_V_T881_ISSR_STR-APPL sy-vline 
WA_V_T881_ISSR_STR-SUBAPPL sy-vline 
WA_V_T881_ISSR_STR-KOMP sy-vline 
WA_V_T881_ISSR_STR-GZLEDGER sy-vline 
WA_V_T881_ISSR_STR-EXIT sy-vline 
WA_V_T881_ISSR_STR-KLDNR sy-vline 
WA_V_T881_ISSR_STR-LOGSYS sy-vline 
WA_V_T881_ISSR_STR-VALUTYP sy-vline 
WA_V_T881_ISSR_STR-GCOMPRESS sy-vline 
WA_V_T881_ISSR_STR-SPLITMETHD sy-vline 
WA_V_T881_ISSR_STR-DATE_DET_POPER sy-vline 
WA_V_T881_ISSR_STR-NAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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