ABAP Select data from SAP table ROIJ_SIM_SCHED into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROIJ_SIM_SCHED
*  INTO TABLE @DATA(IT_ROIJ_SIM_SCHED2).
*--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_ROIJ_SIM_SCHED INDEX 1 INTO DATA(WA_ROIJ_SIM_SCHED2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROIJ_SIM_SCHED>-MANDT = 1.
<ROIJ_SIM_SCHED>-SIM_VERSION = 1.
<ROIJ_SIM_SCHED>-SIM_SCHED_ID = 1.
<ROIJ_SIM_SCHED>-SIM_SCHED_LN = 1.
<ROIJ_SIM_SCHED>-SIM_SCHED_TYP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROIJ_SIM_SCHED-TSYST, sy-vline,
  WA_ROIJ_SIM_SCHED-LOCID, sy-vline,
  WA_ROIJ_SIM_SCHED-MATNR, sy-vline,
  WA_ROIJ_SIM_SCHED-CHARG, sy-vline,
  WA_ROIJ_SIM_SCHED-DATUM, sy-vline,
  WA_ROIJ_SIM_SCHED-SITYP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROIJ_SIM_SCHED 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_ROIJ_SIM_SCHED 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_ROIJ_SIM_SCHED INTO WA_ROIJ_SIM_SCHED.


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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ROIJ_SIM_SCHED-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJ_SIM_SCHED-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field SIM_UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ROIJ_SIM_SCHED-SIM_UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJ_SIM_SCHED-SIM_UOM.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIJ_SIM_SCHED-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJ_SIM_SCHED-VBELN.
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_ROIJ_SIM_SCHED_STR, 
MANDT TYPE STRING,
SIM_VERSION TYPE STRING,
SIM_SCHED_ID TYPE STRING,
SIM_SCHED_LN TYPE STRING,
SIM_SCHED_TYP TYPE STRING,
TSYST TYPE STRING,
LOCID TYPE STRING,
MATNR TYPE STRING,
CHARG TYPE STRING,
DATUM TYPE STRING,
SITYP TYPE STRING,
DOCIND TYPE STRING,
SIM_SCHED_QTY TYPE STRING,
SIM_UOM TYPE STRING,
SCHED_QTY TYPE STRING,
NOMNR TYPE STRING,
NOMTK TYPE STRING,
NOMIT TYPE STRING,
SIM_STATUS TYPE STRING,
AUTO_CREATE TYPE STRING,
CB_IND TYPE STRING,
SIM_GUID TYPE STRING,
ERDAT TYPE STRING,
ERZEIT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AEZEIT TYPE STRING,
AENAM TYPE STRING,
BLOIND TYPE STRING,
DELIND TYPE STRING,
TKTSELECT TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
UPD_FLAG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROIJ_SIM_SCHED_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_ROIJ_SIM_SCHED_STR-MANDT sy-vline 
WA_ROIJ_SIM_SCHED_STR-SIM_VERSION sy-vline 
WA_ROIJ_SIM_SCHED_STR-SIM_SCHED_ID sy-vline 
WA_ROIJ_SIM_SCHED_STR-SIM_SCHED_LN sy-vline 
WA_ROIJ_SIM_SCHED_STR-SIM_SCHED_TYP sy-vline 
WA_ROIJ_SIM_SCHED_STR-TSYST sy-vline 
WA_ROIJ_SIM_SCHED_STR-LOCID sy-vline 
WA_ROIJ_SIM_SCHED_STR-MATNR sy-vline 
WA_ROIJ_SIM_SCHED_STR-CHARG sy-vline 
WA_ROIJ_SIM_SCHED_STR-DATUM sy-vline 
WA_ROIJ_SIM_SCHED_STR-SITYP sy-vline 
WA_ROIJ_SIM_SCHED_STR-DOCIND sy-vline 
WA_ROIJ_SIM_SCHED_STR-SIM_SCHED_QTY sy-vline 
WA_ROIJ_SIM_SCHED_STR-SIM_UOM sy-vline 
WA_ROIJ_SIM_SCHED_STR-SCHED_QTY sy-vline 
WA_ROIJ_SIM_SCHED_STR-NOMNR sy-vline 
WA_ROIJ_SIM_SCHED_STR-NOMTK sy-vline 
WA_ROIJ_SIM_SCHED_STR-NOMIT sy-vline 
WA_ROIJ_SIM_SCHED_STR-SIM_STATUS sy-vline 
WA_ROIJ_SIM_SCHED_STR-AUTO_CREATE sy-vline 
WA_ROIJ_SIM_SCHED_STR-CB_IND sy-vline 
WA_ROIJ_SIM_SCHED_STR-SIM_GUID sy-vline 
WA_ROIJ_SIM_SCHED_STR-ERDAT sy-vline 
WA_ROIJ_SIM_SCHED_STR-ERZEIT sy-vline 
WA_ROIJ_SIM_SCHED_STR-ERNAM sy-vline 
WA_ROIJ_SIM_SCHED_STR-AEDAT sy-vline 
WA_ROIJ_SIM_SCHED_STR-AEZEIT sy-vline 
WA_ROIJ_SIM_SCHED_STR-AENAM sy-vline 
WA_ROIJ_SIM_SCHED_STR-BLOIND sy-vline 
WA_ROIJ_SIM_SCHED_STR-DELIND sy-vline 
WA_ROIJ_SIM_SCHED_STR-TKTSELECT sy-vline 
WA_ROIJ_SIM_SCHED_STR-VBELN sy-vline 
WA_ROIJ_SIM_SCHED_STR-POSNR sy-vline 
WA_ROIJ_SIM_SCHED_STR-UPD_FLAG sy-vline      INTO ld_text SEPARATED BY SPACE.

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