ABAP Select data from SAP table RESRVDINVIPZS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RESRVDINVIPZS
*  INTO TABLE @DATA(IT_RESRVDINVIPZS2).
*--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_RESRVDINVIPZS INDEX 1 INTO DATA(WA_RESRVDINVIPZS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RESRVDINVIPZS>-MANDT = 1.
<RESRVDINVIPZS>-SRECHNGNR = 1.
<RESRVDINVIPZS>-SRECHNGJAHR = 1.
<RESRVDINVIPZS>-BUKRS = 1.
<RESRVDINVIPZS>-DTRANS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RESRVDINVIPZS-TTRANS, sy-vline,
  WA_RESRVDINVIPZS-NTRANS, sy-vline,
  WA_RESRVDINVIPZS-GJAHR, sy-vline,
  WA_RESRVDINVIPZS-BELNR, sy-vline,
  WA_RESRVDINVIPZS-BUZEI, sy-vline,
  WA_RESRVDINVIPZS-REBZJ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RESRVDINVIPZS 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_RESRVDINVIPZS 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_RESRVDINVIPZS INTO WA_RESRVDINVIPZS.


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

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

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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field HDN_KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RESRVDINVIPZS-HDN_KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RESRVDINVIPZS-HDN_KUNNR.
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_RESRVDINVIPZS_STR, 
MANDT TYPE STRING,
SRECHNGNR TYPE STRING,
SRECHNGJAHR TYPE STRING,
BUKRS TYPE STRING,
DTRANS TYPE STRING,
TTRANS TYPE STRING,
NTRANS TYPE STRING,
GJAHR TYPE STRING,
BELNR TYPE STRING,
BUZEI TYPE STRING,
REBZJ TYPE STRING,
REBZG TYPE STRING,
REBZZ TYPE STRING,
RANL TYPE STRING,
RKLAMMER TYPE STRING,
DFAELL TYPE STRING,
RBELKPFD TYPE STRING,
RPOSNR TYPE STRING,
SSOLHAB TYPE STRING,
SBWHR TYPE STRING,
BBWHR TYPE STRING,
DBERVON TYPE STRING,
DBERBIS TYPE STRING,
RPARTNR TYPE STRING,
RPARTNR_ADR_REF TYPE STRING,
KUNNR TYPE STRING,
RDARNEHM TYPE STRING,
RDARNEHM_ADR_REF TYPE STRING,
HDN_KUNNR TYPE STRING,
BBWHR_S TYPE STRING,
ZLSCH TYPE STRING,
SOBJEKT TYPE STRING,
GSART TYPE STRING,
STITART TYPE STRING,
SPLANIST TYPE STRING,
AMMRHY TYPE STRING,
BBASIS TYPE STRING,
PKOND TYPE STRING,
SKOART TYPE STRING,
XKOARTM TYPE STRING,
SBEWART TYPE STRING,
XBEWART TYPE STRING,
POS TYPE STRING,
SORTID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RESRVDINVIPZS_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_RESRVDINVIPZS_STR-MANDT sy-vline 
WA_RESRVDINVIPZS_STR-SRECHNGNR sy-vline 
WA_RESRVDINVIPZS_STR-SRECHNGJAHR sy-vline 
WA_RESRVDINVIPZS_STR-BUKRS sy-vline 
WA_RESRVDINVIPZS_STR-DTRANS sy-vline 
WA_RESRVDINVIPZS_STR-TTRANS sy-vline 
WA_RESRVDINVIPZS_STR-NTRANS sy-vline 
WA_RESRVDINVIPZS_STR-GJAHR sy-vline 
WA_RESRVDINVIPZS_STR-BELNR sy-vline 
WA_RESRVDINVIPZS_STR-BUZEI sy-vline 
WA_RESRVDINVIPZS_STR-REBZJ sy-vline 
WA_RESRVDINVIPZS_STR-REBZG sy-vline 
WA_RESRVDINVIPZS_STR-REBZZ sy-vline 
WA_RESRVDINVIPZS_STR-RANL sy-vline 
WA_RESRVDINVIPZS_STR-RKLAMMER sy-vline 
WA_RESRVDINVIPZS_STR-DFAELL sy-vline 
WA_RESRVDINVIPZS_STR-RBELKPFD sy-vline 
WA_RESRVDINVIPZS_STR-RPOSNR sy-vline 
WA_RESRVDINVIPZS_STR-SSOLHAB sy-vline 
WA_RESRVDINVIPZS_STR-SBWHR sy-vline 
WA_RESRVDINVIPZS_STR-BBWHR sy-vline 
WA_RESRVDINVIPZS_STR-DBERVON sy-vline 
WA_RESRVDINVIPZS_STR-DBERBIS sy-vline 
WA_RESRVDINVIPZS_STR-RPARTNR sy-vline 
WA_RESRVDINVIPZS_STR-RPARTNR_ADR_REF sy-vline 
WA_RESRVDINVIPZS_STR-KUNNR sy-vline 
WA_RESRVDINVIPZS_STR-RDARNEHM sy-vline 
WA_RESRVDINVIPZS_STR-RDARNEHM_ADR_REF sy-vline 
WA_RESRVDINVIPZS_STR-HDN_KUNNR sy-vline 
WA_RESRVDINVIPZS_STR-BBWHR_S sy-vline 
WA_RESRVDINVIPZS_STR-ZLSCH sy-vline 
WA_RESRVDINVIPZS_STR-SOBJEKT sy-vline 
WA_RESRVDINVIPZS_STR-GSART sy-vline 
WA_RESRVDINVIPZS_STR-STITART sy-vline 
WA_RESRVDINVIPZS_STR-SPLANIST sy-vline 
WA_RESRVDINVIPZS_STR-AMMRHY sy-vline 
WA_RESRVDINVIPZS_STR-BBASIS sy-vline 
WA_RESRVDINVIPZS_STR-PKOND sy-vline 
WA_RESRVDINVIPZS_STR-SKOART sy-vline 
WA_RESRVDINVIPZS_STR-XKOARTM sy-vline 
WA_RESRVDINVIPZS_STR-SBEWART sy-vline 
WA_RESRVDINVIPZS_STR-XBEWART sy-vline 
WA_RESRVDINVIPZS_STR-POS sy-vline 
WA_RESRVDINVIPZS_STR-SORTID sy-vline      INTO ld_text SEPARATED BY SPACE.

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