ABAP Select data from SAP table IJOURNALENTHST 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 IJOURNALENTHST 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 IJOURNALENTHST. 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 IJOURNALENTHST 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_IJOURNALENTHST TYPE STANDARD TABLE OF IJOURNALENTHST,
      WA_IJOURNALENTHST TYPE IJOURNALENTHST,
      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: <IJOURNALENTHST> TYPE IJOURNALENTHST.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IJOURNALENTHST
*  INTO TABLE @DATA(IT_IJOURNALENTHST2).
*--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_IJOURNALENTHST INDEX 1 INTO DATA(WA_IJOURNALENTHST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IJOURNALENTHST>-MANDT = 1.
<IJOURNALENTHST>-COMPANYCODE = 1.
<IJOURNALENTHST>-ACCOUNTINGDOCUMENT = 1.
<IJOURNALENTHST>-LEDGER = 1.
<IJOURNALENTHST>-CHANGEDOCUMENT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IJOURNALENTHST-DATABASETABLE, sy-vline,
  WA_IJOURNALENTHST-CHANGEDOCTABLEKEY, sy-vline,
  WA_IJOURNALENTHST-DATABASETABLEFIELD, sy-vline,
  WA_IJOURNALENTHST-ACCOUNTINGDOCUMENTITEM, sy-vline,
  WA_IJOURNALENTHST-FISCALYEAR, sy-vline,
  WA_IJOURNALENTHST-POSTINGDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IJOURNALENTHST 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_IJOURNALENTHST 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_IJOURNALENTHST INTO WA_IJOURNALENTHST.


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

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

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

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

*Conversion exit ALPHA, internal->external for field GLACCOUNT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IJOURNALENTHST-GLACCOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IJOURNALENTHST-GLACCOUNT.
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_IJOURNALENTHST_STR, 
MANDT TYPE STRING,
COMPANYCODE TYPE STRING,
ACCOUNTINGDOCUMENT TYPE STRING,
LEDGER TYPE STRING,
CHANGEDOCUMENT TYPE STRING,
DATABASETABLE TYPE STRING,
CHANGEDOCTABLEKEY TYPE STRING,
DATABASETABLEFIELD TYPE STRING,
ACCOUNTINGDOCUMENTITEM TYPE STRING,
FISCALYEAR TYPE STRING,
POSTINGDATE TYPE STRING,
DOCUMENTDATE TYPE STRING,
USERNAME TYPE STRING,
LASTCHANGETIME TYPE STRING,
NEWFIELDCONTENT TYPE STRING,
OLDFIELDCONTENT TYPE STRING,
LASTCHANGEDATE TYPE STRING,
ACCOUNTINGDOCUMENTCREATIONDATE TYPE STRING,
CREATIONTIME TYPE STRING,
FINANCIALACCOUNTTYPE TYPE STRING,
GLACCOUNT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IJOURNALENTHST_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_IJOURNALENTHST_STR-MANDT sy-vline 
WA_IJOURNALENTHST_STR-COMPANYCODE sy-vline 
WA_IJOURNALENTHST_STR-ACCOUNTINGDOCUMENT sy-vline 
WA_IJOURNALENTHST_STR-LEDGER sy-vline 
WA_IJOURNALENTHST_STR-CHANGEDOCUMENT sy-vline 
WA_IJOURNALENTHST_STR-DATABASETABLE sy-vline 
WA_IJOURNALENTHST_STR-CHANGEDOCTABLEKEY sy-vline 
WA_IJOURNALENTHST_STR-DATABASETABLEFIELD sy-vline 
WA_IJOURNALENTHST_STR-ACCOUNTINGDOCUMENTITEM sy-vline 
WA_IJOURNALENTHST_STR-FISCALYEAR sy-vline 
WA_IJOURNALENTHST_STR-POSTINGDATE sy-vline 
WA_IJOURNALENTHST_STR-DOCUMENTDATE sy-vline 
WA_IJOURNALENTHST_STR-USERNAME sy-vline 
WA_IJOURNALENTHST_STR-LASTCHANGETIME sy-vline 
WA_IJOURNALENTHST_STR-NEWFIELDCONTENT sy-vline 
WA_IJOURNALENTHST_STR-OLDFIELDCONTENT sy-vline 
WA_IJOURNALENTHST_STR-LASTCHANGEDATE sy-vline 
WA_IJOURNALENTHST_STR-ACCOUNTINGDOCUMENTCREATIONDATE sy-vline 
WA_IJOURNALENTHST_STR-CREATIONTIME sy-vline 
WA_IJOURNALENTHST_STR-FINANCIALACCOUNTTYPE sy-vline 
WA_IJOURNALENTHST_STR-GLACCOUNT sy-vline      INTO ld_text SEPARATED BY SPACE.

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