ABAP Select data from SAP table RESRVDINVIH_TAB into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RESRVDINVIH_TAB
*  INTO TABLE @DATA(IT_RESRVDINVIH_TAB2).
*--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_RESRVDINVIH_TAB INDEX 1 INTO DATA(WA_RESRVDINVIH_TAB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RESRVDINVIH_TAB>-BUKRS = 1.
<RESRVDINVIH_TAB>-RPARTNR = 1.
<RESRVDINVIH_TAB>-RPARTNR_ADR_REF = 1.
<RESRVDINVIH_TAB>-KUNNR = 1.
<RESRVDINVIH_TAB>-RDARNEHM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RESRVDINVIH_TAB-RDARNEHM_ADR_REF, sy-vline,
  WA_RESRVDINVIH_TAB-HDN_KUNNR, sy-vline,
  WA_RESRVDINVIH_TAB-SBWHR, sy-vline,
  WA_RESRVDINVIH_TAB-DZLSCH, sy-vline,
  WA_RESRVDINVIH_TAB-DINVFROM, sy-vline,
  WA_RESRVDINVIH_TAB-DINVTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RESRVDINVIH_TAB 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_RESRVDINVIH_TAB 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_RESRVDINVIH_TAB INTO WA_RESRVDINVIH_TAB.


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

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

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

*Conversion exit ALPHA, internal->external for field HDN_KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RESRVDINVIH_TAB-HDN_KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RESRVDINVIH_TAB-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_RESRVDINVIH_TAB_STR, 
BUKRS 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,
SBWHR TYPE STRING,
DZLSCH TYPE STRING,
DINVFROM TYPE STRING,
DINVTO TYPE STRING,
INVALLOPENITEMS TYPE STRING,
INVCOLLECT TYPE STRING,
INVPERIOD TYPE STRING,
PLANACTUAL TYPE STRING,
INVRESTFI TYPE STRING,
PRINTDATE TYPE STRING,
BBWHR TYPE STRING,
SSOLHAB TYPE STRING,
DBERVON TYPE STRING,
DBERBIS TYPE STRING,
DFAELL TYPE STRING,
COUNT_RANL TYPE STRING,
COUNT_RKLAMMER TYPE STRING,
ALTPAYER TYPE STRING,
RERF TYPE STRING,
DERF TYPE STRING,
TERF TYPE STRING,
REHER TYPE STRING,
RBEAR TYPE STRING,
DBEAR TYPE STRING,
TBEAR TYPE STRING,
RBHER TYPE STRING,
RQIDENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RESRVDINVIH_TAB_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_RESRVDINVIH_TAB_STR-BUKRS sy-vline 
WA_RESRVDINVIH_TAB_STR-RPARTNR sy-vline 
WA_RESRVDINVIH_TAB_STR-RPARTNR_ADR_REF sy-vline 
WA_RESRVDINVIH_TAB_STR-KUNNR sy-vline 
WA_RESRVDINVIH_TAB_STR-RDARNEHM sy-vline 
WA_RESRVDINVIH_TAB_STR-RDARNEHM_ADR_REF sy-vline 
WA_RESRVDINVIH_TAB_STR-HDN_KUNNR sy-vline 
WA_RESRVDINVIH_TAB_STR-SBWHR sy-vline 
WA_RESRVDINVIH_TAB_STR-DZLSCH sy-vline 
WA_RESRVDINVIH_TAB_STR-DINVFROM sy-vline 
WA_RESRVDINVIH_TAB_STR-DINVTO sy-vline 
WA_RESRVDINVIH_TAB_STR-INVALLOPENITEMS sy-vline 
WA_RESRVDINVIH_TAB_STR-INVCOLLECT sy-vline 
WA_RESRVDINVIH_TAB_STR-INVPERIOD sy-vline 
WA_RESRVDINVIH_TAB_STR-PLANACTUAL sy-vline 
WA_RESRVDINVIH_TAB_STR-INVRESTFI sy-vline 
WA_RESRVDINVIH_TAB_STR-PRINTDATE sy-vline 
WA_RESRVDINVIH_TAB_STR-BBWHR sy-vline 
WA_RESRVDINVIH_TAB_STR-SSOLHAB sy-vline 
WA_RESRVDINVIH_TAB_STR-DBERVON sy-vline 
WA_RESRVDINVIH_TAB_STR-DBERBIS sy-vline 
WA_RESRVDINVIH_TAB_STR-DFAELL sy-vline 
WA_RESRVDINVIH_TAB_STR-COUNT_RANL sy-vline 
WA_RESRVDINVIH_TAB_STR-COUNT_RKLAMMER sy-vline 
WA_RESRVDINVIH_TAB_STR-ALTPAYER sy-vline 
WA_RESRVDINVIH_TAB_STR-RERF sy-vline 
WA_RESRVDINVIH_TAB_STR-DERF sy-vline 
WA_RESRVDINVIH_TAB_STR-TERF sy-vline 
WA_RESRVDINVIH_TAB_STR-REHER sy-vline 
WA_RESRVDINVIH_TAB_STR-RBEAR sy-vline 
WA_RESRVDINVIH_TAB_STR-DBEAR sy-vline 
WA_RESRVDINVIH_TAB_STR-TBEAR sy-vline 
WA_RESRVDINVIH_TAB_STR-RBHER sy-vline 
WA_RESRVDINVIH_TAB_STR-RQIDENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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