ABAP Select data from SAP table OIH_J1B_TCI into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP OIH_J1B_TCI 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 OIH_J1B_TCI. 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 OIH_J1B_TCI 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_OIH_J1B_TCI TYPE STANDARD TABLE OF OIH_J1B_TCI,
      WA_OIH_J1B_TCI TYPE OIH_J1B_TCI,
      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: <OIH_J1B_TCI> TYPE OIH_J1B_TCI.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_OIH_J1B_TCI.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM OIH_J1B_TCI
  INTO TABLE IT_OIH_J1B_TCI.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OIH_J1B_TCI
*  INTO TABLE @DATA(IT_OIH_J1B_TCI2).
*--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_OIH_J1B_TCI INDEX 1 INTO DATA(WA_OIH_J1B_TCI2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_OIH_J1B_TCI ASSIGNING <OIH_J1B_TCI>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OIH_J1B_TCI>-TAXCALCNO = 1.
<OIH_J1B_TCI>-STEP1 = 1.
<OIH_J1B_TCI>-STEP2 = 1.
<OIH_J1B_TCI>-STEP3 = 1.
<OIH_J1B_TCI>-COMMAND = 1.

ENDLOOP.

LOOP AT IT_OIH_J1B_TCI INTO WA_OIH_J1B_TCI.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OIH_J1B_TCI-ID1, sy-vline,
  WA_OIH_J1B_TCI-NR1, sy-vline,
  WA_OIH_J1B_TCI-ID2, sy-vline,
  WA_OIH_J1B_TCI-NR2, sy-vline,
  WA_OIH_J1B_TCI-ID3, sy-vline,
  WA_OIH_J1B_TCI-NR3, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OIH_J1B_TCI 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_OIH_J1B_TCI 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_OIH_J1B_TCI INTO WA_OIH_J1B_TCI.


*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_OIH_J1B_TCI_STR, 
TAXCALCNO TYPE STRING,
STEP1 TYPE STRING,
STEP2 TYPE STRING,
STEP3 TYPE STRING,
COMMAND TYPE STRING,
ID1 TYPE STRING,
NR1 TYPE STRING,
ID2 TYPE STRING,
NR2 TYPE STRING,
ID3 TYPE STRING,
NR3 TYPE STRING,
CFIELD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OIH_J1B_TCI_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_OIH_J1B_TCI_STR-TAXCALCNO sy-vline 
WA_OIH_J1B_TCI_STR-STEP1 sy-vline 
WA_OIH_J1B_TCI_STR-STEP2 sy-vline 
WA_OIH_J1B_TCI_STR-STEP3 sy-vline 
WA_OIH_J1B_TCI_STR-COMMAND sy-vline 
WA_OIH_J1B_TCI_STR-ID1 sy-vline 
WA_OIH_J1B_TCI_STR-NR1 sy-vline 
WA_OIH_J1B_TCI_STR-ID2 sy-vline 
WA_OIH_J1B_TCI_STR-NR2 sy-vline 
WA_OIH_J1B_TCI_STR-ID3 sy-vline 
WA_OIH_J1B_TCI_STR-NR3 sy-vline 
WA_OIH_J1B_TCI_STR-CFIELD sy-vline      INTO ld_text SEPARATED BY SPACE.

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