ABAP Select data from SAP table TDS_DLVDATE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TDS_DLVDATE
*  INTO TABLE @DATA(IT_TDS_DLVDATE2).
*--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_TDS_DLVDATE INDEX 1 INTO DATA(WA_TDS_DLVDATE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TDS_DLVDATE>-VBELN = 1.
<TDS_DLVDATE>-TRVOG = 1.
<TDS_DLVDATE>-TRVOGT = 1.
<TDS_DLVDATE>-AUART = 1.
<TDS_DLVDATE>-AUARTT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TDS_DLVDATE-KUNNR, sy-vline,
  WA_TDS_DLVDATE-ERDAT, sy-vline,
  WA_TDS_DLVDATE-AUDAT, sy-vline,
  WA_TDS_DLVDATE-BSTKD, sy-vline,
  WA_TDS_DLVDATE-ZPAVW, sy-vline,
  WA_TDS_DLVDATE-ZPERS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TDS_DLVDATE 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_TDS_DLVDATE 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_TDS_DLVDATE INTO WA_TDS_DLVDATE.


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

*Conversion exit AUART, internal->external for field AUART
CALL FUNCTION 'CONVERSION_EXIT_AUART_OUTPUT'
  EXPORTING
    input =                      WA_TDS_DLVDATE-AUART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TDS_DLVDATE-AUART.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit PARVW, internal->external for field ZPAVW
CALL FUNCTION 'CONVERSION_EXIT_PARVW_OUTPUT'
  EXPORTING
    input =                      WA_TDS_DLVDATE-ZPAVW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TDS_DLVDATE-ZPAVW.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit PARVW, internal->external for field DISPZPAVW
CALL FUNCTION 'CONVERSION_EXIT_PARVW_OUTPUT'
  EXPORTING
    input =                      WA_TDS_DLVDATE-DISPZPAVW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TDS_DLVDATE-DISPZPAVW.
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_TDS_DLVDATE_STR, 
VBELN TYPE STRING,
TRVOG TYPE STRING,
TRVOGT TYPE STRING,
AUART TYPE STRING,
AUARTT TYPE STRING,
KUNNR TYPE STRING,
ERDAT TYPE STRING,
AUDAT TYPE STRING,
BSTKD TYPE STRING,
ZPAVW TYPE STRING,
ZPERS TYPE STRING,
ERNAM TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
VKBUR TYPE STRING,
VKGRP TYPE STRING,
WAERK TYPE STRING,
NETWR TYPE STRING,
AWAHR TYPE STRING,
DATAB TYPE STRING,
DATBI TYPE STRING,
F_ALL TYPE STRING,
F_OPEN TYPE STRING,
F_INC TYPE STRING,
F_DELBLOCK TYPE STRING,
F_BILLBLOCK TYPE STRING,
NAME_KUN TYPE STRING,
NAME_ZPERS TYPE STRING,
NAME1 TYPE STRING,
VDATU TYPE STRING,
ENAME TYPE STRING,
AUTLF TYPE STRING,
AUGRU TYPE STRING,
VSBED TYPE STRING,
VSART TYPE STRING,
TRATY TYPE STRING,
TRMTYP TYPE STRING,
INCO1 TYPE STRING,
INCO2 TYPE STRING,
BSARK TYPE STRING,
BSTDK TYPE STRING,
DISPZPAVW TYPE STRING,
FAKSK TYPE STRING,
FAKSKT TYPE STRING,
LIFSK TYPE STRING,
LIFSKT TYPE STRING,
LEDAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TDS_DLVDATE_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_TDS_DLVDATE_STR-VBELN sy-vline 
WA_TDS_DLVDATE_STR-TRVOG sy-vline 
WA_TDS_DLVDATE_STR-TRVOGT sy-vline 
WA_TDS_DLVDATE_STR-AUART sy-vline 
WA_TDS_DLVDATE_STR-AUARTT sy-vline 
WA_TDS_DLVDATE_STR-KUNNR sy-vline 
WA_TDS_DLVDATE_STR-ERDAT sy-vline 
WA_TDS_DLVDATE_STR-AUDAT sy-vline 
WA_TDS_DLVDATE_STR-BSTKD sy-vline 
WA_TDS_DLVDATE_STR-ZPAVW sy-vline 
WA_TDS_DLVDATE_STR-ZPERS sy-vline 
WA_TDS_DLVDATE_STR-ERNAM sy-vline 
WA_TDS_DLVDATE_STR-VKORG sy-vline 
WA_TDS_DLVDATE_STR-VTWEG sy-vline 
WA_TDS_DLVDATE_STR-SPART sy-vline 
WA_TDS_DLVDATE_STR-VKBUR sy-vline 
WA_TDS_DLVDATE_STR-VKGRP sy-vline 
WA_TDS_DLVDATE_STR-WAERK sy-vline 
WA_TDS_DLVDATE_STR-NETWR sy-vline 
WA_TDS_DLVDATE_STR-AWAHR sy-vline 
WA_TDS_DLVDATE_STR-DATAB sy-vline 
WA_TDS_DLVDATE_STR-DATBI sy-vline 
WA_TDS_DLVDATE_STR-F_ALL sy-vline 
WA_TDS_DLVDATE_STR-F_OPEN sy-vline 
WA_TDS_DLVDATE_STR-F_INC sy-vline 
WA_TDS_DLVDATE_STR-F_DELBLOCK sy-vline 
WA_TDS_DLVDATE_STR-F_BILLBLOCK sy-vline 
WA_TDS_DLVDATE_STR-NAME_KUN sy-vline 
WA_TDS_DLVDATE_STR-NAME_ZPERS sy-vline 
WA_TDS_DLVDATE_STR-NAME1 sy-vline 
WA_TDS_DLVDATE_STR-VDATU sy-vline 
WA_TDS_DLVDATE_STR-ENAME sy-vline 
WA_TDS_DLVDATE_STR-AUTLF sy-vline 
WA_TDS_DLVDATE_STR-AUGRU sy-vline 
WA_TDS_DLVDATE_STR-VSBED sy-vline 
WA_TDS_DLVDATE_STR-VSART sy-vline 
WA_TDS_DLVDATE_STR-TRATY sy-vline 
WA_TDS_DLVDATE_STR-TRMTYP sy-vline 
WA_TDS_DLVDATE_STR-INCO1 sy-vline 
WA_TDS_DLVDATE_STR-INCO2 sy-vline 
WA_TDS_DLVDATE_STR-BSARK sy-vline 
WA_TDS_DLVDATE_STR-BSTDK sy-vline 
WA_TDS_DLVDATE_STR-DISPZPAVW sy-vline 
WA_TDS_DLVDATE_STR-FAKSK sy-vline 
WA_TDS_DLVDATE_STR-FAKSKT sy-vline 
WA_TDS_DLVDATE_STR-LIFSK sy-vline 
WA_TDS_DLVDATE_STR-LIFSKT sy-vline 
WA_TDS_DLVDATE_STR-LEDAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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