ABAP Select data from SAP table JIT_E1KSJCL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP JIT_E1KSJCL 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 JIT_E1KSJCL. 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 JIT_E1KSJCL 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_JIT_E1KSJCL TYPE STANDARD TABLE OF JIT_E1KSJCL,
      WA_JIT_E1KSJCL TYPE JIT_E1KSJCL,
      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: <JIT_E1KSJCL> TYPE JIT_E1KSJCL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_JIT_E1KSJCL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM JIT_E1KSJCL
  INTO TABLE IT_JIT_E1KSJCL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM JIT_E1KSJCL
*  INTO TABLE @DATA(IT_JIT_E1KSJCL2).
*--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_JIT_E1KSJCL INDEX 1 INTO DATA(WA_JIT_E1KSJCL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_JIT_E1KSJCL ASSIGNING <JIT_E1KSJCL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<JIT_E1KSJCL>-PARTN = 1.
<JIT_E1KSJCL>-LIFNR = 1.
<JIT_E1KSJCL>-KNREF = 1.
<JIT_E1KSJCL>-PRODN = 1.
<JIT_E1KSJCL>-SEQNR = 1.

ENDLOOP.

LOOP AT IT_JIT_E1KSJCL INTO WA_JIT_E1KSJCL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_JIT_E1KSJCL-VETYP, sy-vline,
  WA_JIT_E1KSJCL-VEHID, sy-vline,
  WA_JIT_E1KSJCL-SSPEZ, sy-vline,
  WA_JIT_E1KSJCL-ABLAD, sy-vline,
  WA_JIT_E1KSJCL-FLDPO, sy-vline,
  WA_JIT_E1KSJCL-EDATUM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_JIT_E1KSJCL 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_JIT_E1KSJCL 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_JIT_E1KSJCL INTO WA_JIT_E1KSJCL.


*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_JIT_E1KSJCL_STR, 
PARTN TYPE STRING,
LIFNR TYPE STRING,
KNREF TYPE STRING,
PRODN TYPE STRING,
SEQNR TYPE STRING,
VETYP TYPE STRING,
VEHID TYPE STRING,
SSPEZ TYPE STRING,
ABLAD TYPE STRING,
FLDPO TYPE STRING,
EDATUM TYPE STRING,
EZEIT TYPE STRING,
EXSTI TYPE STRING,
TRMNEW TYPE STRING,
TRMOLD TYPE STRING,
TRMDAY TYPE STRING,
TRMTIM TYPE STRING,
CHNGSEQ TYPE STRING,
REFNR TYPE STRING,
FZID TYPE STRING,
PDATUM TYPE STRING,
PZEIT TYPE STRING,
ABTYP TYPE STRING,
RDATUM TYPE STRING,
RZEIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_JIT_E1KSJCL_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_JIT_E1KSJCL_STR-PARTN sy-vline 
WA_JIT_E1KSJCL_STR-LIFNR sy-vline 
WA_JIT_E1KSJCL_STR-KNREF sy-vline 
WA_JIT_E1KSJCL_STR-PRODN sy-vline 
WA_JIT_E1KSJCL_STR-SEQNR sy-vline 
WA_JIT_E1KSJCL_STR-VETYP sy-vline 
WA_JIT_E1KSJCL_STR-VEHID sy-vline 
WA_JIT_E1KSJCL_STR-SSPEZ sy-vline 
WA_JIT_E1KSJCL_STR-ABLAD sy-vline 
WA_JIT_E1KSJCL_STR-FLDPO sy-vline 
WA_JIT_E1KSJCL_STR-EDATUM sy-vline 
WA_JIT_E1KSJCL_STR-EZEIT sy-vline 
WA_JIT_E1KSJCL_STR-EXSTI sy-vline 
WA_JIT_E1KSJCL_STR-TRMNEW sy-vline 
WA_JIT_E1KSJCL_STR-TRMOLD sy-vline 
WA_JIT_E1KSJCL_STR-TRMDAY sy-vline 
WA_JIT_E1KSJCL_STR-TRMTIM sy-vline 
WA_JIT_E1KSJCL_STR-CHNGSEQ sy-vline 
WA_JIT_E1KSJCL_STR-REFNR sy-vline 
WA_JIT_E1KSJCL_STR-FZID sy-vline 
WA_JIT_E1KSJCL_STR-PDATUM sy-vline 
WA_JIT_E1KSJCL_STR-PZEIT sy-vline 
WA_JIT_E1KSJCL_STR-ABTYP sy-vline 
WA_JIT_E1KSJCL_STR-RDATUM sy-vline 
WA_JIT_E1KSJCL_STR-RZEIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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