ABAP Select data from SAP table JITDIA_1202 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP JITDIA_1202 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 JITDIA_1202. 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 JITDIA_1202 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_JITDIA_1202 TYPE STANDARD TABLE OF JITDIA_1202,
      WA_JITDIA_1202 TYPE JITDIA_1202,
      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: <JITDIA_1202> TYPE JITDIA_1202.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_JITDIA_1202.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM JITDIA_1202
  INTO TABLE IT_JITDIA_1202.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM JITDIA_1202
*  INTO TABLE @DATA(IT_JITDIA_12022).
*--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_JITDIA_1202 INDEX 1 INTO DATA(WA_JITDIA_12022).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_JITDIA_1202 ASSIGNING <JITDIA_1202>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<JITDIA_1202>-KDMAT = 1.
<JITDIA_1202>-ABLAD = 1.
<JITDIA_1202>-VMENG = 1.
<JITDIA_1202>-VRKME = 1.
<JITDIA_1202>-FLDPO = 1.

ENDLOOP.

LOOP AT IT_JITDIA_1202 INTO WA_JITDIA_1202.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_JITDIA_1202-LIUMF, sy-vline,
  WA_JITDIA_1202-EDATUM, sy-vline,
  WA_JITDIA_1202-EZEIT, sy-vline,
  WA_JITDIA_1202-EXTST, sy-vline,
  WA_JITDIA_1202-PDATUM, sy-vline,
  WA_JITDIA_1202-PZEIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_JITDIA_1202 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_JITDIA_1202 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_JITDIA_1202 INTO WA_JITDIA_1202.


*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 CUNIT, internal->external for field VRKME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_JITDIA_1202-VRKME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JITDIA_1202-VRKME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field LIUMF
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_JITDIA_1202-LIUMF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JITDIA_1202-LIUMF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_JITDIA_1202-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JITDIA_1202-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JITDIA_1202-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JITDIA_1202-VBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JITDIA_1202-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JITDIA_1202-KUNNR.
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_JITDIA_1202_STR, 
KDMAT TYPE STRING,
ABLAD TYPE STRING,
VMENG TYPE STRING,
VRKME TYPE STRING,
FLDPO TYPE STRING,
LIUMF TYPE STRING,
EDATUM TYPE STRING,
EZEIT TYPE STRING,
EXTST TYPE STRING,
PDATUM TYPE STRING,
PZEIT TYPE STRING,
MATNR TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
POSGT TYPE STRING,
MAKTX TYPE STRING,
ARKTX TYPE STRING,
ANLIE TYPE STRING,
RDATUM TYPE STRING,
RZEIT TYPE STRING,
SELKZ TYPE STRING,
KNREF TYPE STRING,
KUNNR TYPE STRING,
GRPIN TYPE STRING,
GRIND TYPE STRING,
REFTY1 TYPE STRING,
LEVTY1 TYPE STRING,
REFTX1 TYPE STRING,
REFTY2 TYPE STRING,
LEVTY2 TYPE STRING,
REFTX2 TYPE STRING,
REFTY3 TYPE STRING,
LEVTY3 TYPE STRING,
REFTX3 TYPE STRING,
KTEXT TYPE STRING,
CHANGETYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_JITDIA_1202_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_JITDIA_1202_STR-KDMAT sy-vline 
WA_JITDIA_1202_STR-ABLAD sy-vline 
WA_JITDIA_1202_STR-VMENG sy-vline 
WA_JITDIA_1202_STR-VRKME sy-vline 
WA_JITDIA_1202_STR-FLDPO sy-vline 
WA_JITDIA_1202_STR-LIUMF sy-vline 
WA_JITDIA_1202_STR-EDATUM sy-vline 
WA_JITDIA_1202_STR-EZEIT sy-vline 
WA_JITDIA_1202_STR-EXTST sy-vline 
WA_JITDIA_1202_STR-PDATUM sy-vline 
WA_JITDIA_1202_STR-PZEIT sy-vline 
WA_JITDIA_1202_STR-MATNR sy-vline 
WA_JITDIA_1202_STR-VBELN sy-vline 
WA_JITDIA_1202_STR-POSNR sy-vline 
WA_JITDIA_1202_STR-POSGT sy-vline 
WA_JITDIA_1202_STR-MAKTX sy-vline 
WA_JITDIA_1202_STR-ARKTX sy-vline 
WA_JITDIA_1202_STR-ANLIE sy-vline 
WA_JITDIA_1202_STR-RDATUM sy-vline 
WA_JITDIA_1202_STR-RZEIT sy-vline 
WA_JITDIA_1202_STR-SELKZ sy-vline 
WA_JITDIA_1202_STR-KNREF sy-vline 
WA_JITDIA_1202_STR-KUNNR sy-vline 
WA_JITDIA_1202_STR-GRPIN sy-vline 
WA_JITDIA_1202_STR-GRIND sy-vline 
WA_JITDIA_1202_STR-REFTY1 sy-vline 
WA_JITDIA_1202_STR-LEVTY1 sy-vline 
WA_JITDIA_1202_STR-REFTX1 sy-vline 
WA_JITDIA_1202_STR-REFTY2 sy-vline 
WA_JITDIA_1202_STR-LEVTY2 sy-vline 
WA_JITDIA_1202_STR-REFTX2 sy-vline 
WA_JITDIA_1202_STR-REFTY3 sy-vline 
WA_JITDIA_1202_STR-LEVTY3 sy-vline 
WA_JITDIA_1202_STR-REFTX3 sy-vline 
WA_JITDIA_1202_STR-KTEXT sy-vline 
WA_JITDIA_1202_STR-CHANGETYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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