ABAP Select data from SAP table JIT_ESDHEAD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP JIT_ESDHEAD 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_ESDHEAD. 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_ESDHEAD 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_ESDHEAD TYPE STANDARD TABLE OF JIT_ESDHEAD,
      WA_JIT_ESDHEAD TYPE JIT_ESDHEAD,
      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_ESDHEAD> TYPE JIT_ESDHEAD.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM JIT_ESDHEAD
*  INTO TABLE @DATA(IT_JIT_ESDHEAD2).
*--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_ESDHEAD INDEX 1 INTO DATA(WA_JIT_ESDHEAD2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_JIT_ESDHEAD-CUSTO, sy-vline,
  WA_JIT_ESDHEAD-SEQNR, sy-vline,
  WA_JIT_ESDHEAD-NACHB, sy-vline,
  WA_JIT_ESDHEAD-VETYP, sy-vline,
  WA_JIT_ESDHEAD-VEHID, sy-vline,
  WA_JIT_ESDHEAD-SSPEZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_JIT_ESDHEAD 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_ESDHEAD 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_ESDHEAD INTO WA_JIT_ESDHEAD.


*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_ESDHEAD_STR, 
PRODN TYPE STRING,
TEXT TYPE STRING,
PARTN TYPE STRING,
KNREF TYPE STRING,
LIFNR TYPE STRING,
CUSTO TYPE STRING,
SEQNR TYPE STRING,
NACHB 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,
RTY01 TYPE STRING,
RFN01 TYPE STRING,
RTY02 TYPE STRING,
RFN02 TYPE STRING,
RTY03 TYPE STRING,
RFN03 TYPE STRING,
PRODN_TO TYPE STRING,
BOX TYPE STRING,
JINUM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_JIT_ESDHEAD_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_ESDHEAD_STR-PRODN sy-vline 
WA_JIT_ESDHEAD_STR-TEXT sy-vline 
WA_JIT_ESDHEAD_STR-PARTN sy-vline 
WA_JIT_ESDHEAD_STR-KNREF sy-vline 
WA_JIT_ESDHEAD_STR-LIFNR sy-vline 
WA_JIT_ESDHEAD_STR-CUSTO sy-vline 
WA_JIT_ESDHEAD_STR-SEQNR sy-vline 
WA_JIT_ESDHEAD_STR-NACHB sy-vline 
WA_JIT_ESDHEAD_STR-VETYP sy-vline 
WA_JIT_ESDHEAD_STR-VEHID sy-vline 
WA_JIT_ESDHEAD_STR-SSPEZ sy-vline 
WA_JIT_ESDHEAD_STR-ABLAD sy-vline 
WA_JIT_ESDHEAD_STR-FLDPO sy-vline 
WA_JIT_ESDHEAD_STR-EDATUM sy-vline 
WA_JIT_ESDHEAD_STR-EZEIT sy-vline 
WA_JIT_ESDHEAD_STR-EXSTI sy-vline 
WA_JIT_ESDHEAD_STR-TRMNEW sy-vline 
WA_JIT_ESDHEAD_STR-TRMOLD sy-vline 
WA_JIT_ESDHEAD_STR-TRMDAY sy-vline 
WA_JIT_ESDHEAD_STR-TRMTIM sy-vline 
WA_JIT_ESDHEAD_STR-CHNGSEQ sy-vline 
WA_JIT_ESDHEAD_STR-REFNR sy-vline 
WA_JIT_ESDHEAD_STR-FZID sy-vline 
WA_JIT_ESDHEAD_STR-PDATUM sy-vline 
WA_JIT_ESDHEAD_STR-PZEIT sy-vline 
WA_JIT_ESDHEAD_STR-ABTYP sy-vline 
WA_JIT_ESDHEAD_STR-RDATUM sy-vline 
WA_JIT_ESDHEAD_STR-RZEIT sy-vline 
WA_JIT_ESDHEAD_STR-RTY01 sy-vline 
WA_JIT_ESDHEAD_STR-RFN01 sy-vline 
WA_JIT_ESDHEAD_STR-RTY02 sy-vline 
WA_JIT_ESDHEAD_STR-RFN02 sy-vline 
WA_JIT_ESDHEAD_STR-RTY03 sy-vline 
WA_JIT_ESDHEAD_STR-RFN03 sy-vline 
WA_JIT_ESDHEAD_STR-PRODN_TO sy-vline 
WA_JIT_ESDHEAD_STR-BOX sy-vline 
WA_JIT_ESDHEAD_STR-JINUM sy-vline      INTO ld_text SEPARATED BY SPACE.

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