ABAP Select data from SAP table OIT_TRIP_APRV_NODE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OIT_TRIP_APRV_NODE
*  INTO TABLE @DATA(IT_OIT_TRIP_APRV_NODE2).
*--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_OIT_TRIP_APRV_NODE INDEX 1 INTO DATA(WA_OIT_TRIP_APRV_NODE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OIT_TRIP_APRV_NODE>-PROCESSFLOWNODE = 1.
<OIT_TRIP_APRV_NODE>-PROCESSFLOWCHILDRENNODE = 1.
<OIT_TRIP_APRV_NODE>-PROCESSFLOWLANE = 1.
<OIT_TRIP_APRV_NODE>-AGENT = 1.
<OIT_TRIP_APRV_NODE>-AGENT_NAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OIT_TRIP_APRV_NODE-PROCESSFLOWNODESTATUS, sy-vline,
  WA_OIT_TRIP_APRV_NODE-PROCESSFLOWNODEUITEXT, sy-vline,
  WA_OIT_TRIP_APRV_NODE-PROCESSFLOWNODETITLE, sy-vline,
  WA_OIT_TRIP_APRV_NODE-PROCESSFLOWNODESHORTTITLE, sy-vline,
  WA_OIT_TRIP_APRV_NODE-PROCESSFLOWNODEFOCUS, sy-vline,
  WA_OIT_TRIP_APRV_NODE-TIMESTAMP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OIT_TRIP_APRV_NODE 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_OIT_TRIP_APRV_NODE 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_OIT_TRIP_APRV_NODE INTO WA_OIT_TRIP_APRV_NODE.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_OIT_TRIP_APRV_NODE_STR, 
PROCESSFLOWNODE TYPE STRING,
PROCESSFLOWCHILDRENNODE TYPE STRING,
PROCESSFLOWLANE TYPE STRING,
AGENT TYPE STRING,
AGENT_NAME TYPE STRING,
PROCESSFLOWNODESTATUS TYPE STRING,
PROCESSFLOWNODEUITEXT TYPE STRING,
PROCESSFLOWNODETITLE TYPE STRING,
PROCESSFLOWNODESHORTTITLE TYPE STRING,
PROCESSFLOWNODEFOCUS TYPE STRING,
TIMESTAMP TYPE STRING,
REFERENCEDOCUMENT TYPE STRING,
WORKITEM_ID TYPE STRING,
PROCESSFLOWNODESTATUSDESC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OIT_TRIP_APRV_NODE_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_OIT_TRIP_APRV_NODE_STR-PROCESSFLOWNODE sy-vline 
WA_OIT_TRIP_APRV_NODE_STR-PROCESSFLOWCHILDRENNODE sy-vline 
WA_OIT_TRIP_APRV_NODE_STR-PROCESSFLOWLANE sy-vline 
WA_OIT_TRIP_APRV_NODE_STR-AGENT sy-vline 
WA_OIT_TRIP_APRV_NODE_STR-AGENT_NAME sy-vline 
WA_OIT_TRIP_APRV_NODE_STR-PROCESSFLOWNODESTATUS sy-vline 
WA_OIT_TRIP_APRV_NODE_STR-PROCESSFLOWNODEUITEXT sy-vline 
WA_OIT_TRIP_APRV_NODE_STR-PROCESSFLOWNODETITLE sy-vline 
WA_OIT_TRIP_APRV_NODE_STR-PROCESSFLOWNODESHORTTITLE sy-vline 
WA_OIT_TRIP_APRV_NODE_STR-PROCESSFLOWNODEFOCUS sy-vline 
WA_OIT_TRIP_APRV_NODE_STR-TIMESTAMP sy-vline 
WA_OIT_TRIP_APRV_NODE_STR-REFERENCEDOCUMENT sy-vline 
WA_OIT_TRIP_APRV_NODE_STR-WORKITEM_ID sy-vline 
WA_OIT_TRIP_APRV_NODE_STR-PROCESSFLOWNODESTATUSDESC sy-vline      INTO ld_text SEPARATED BY SPACE.

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