ABAP Select data from SAP table T703L into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T703L 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 T703L. 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 T703L 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_T703L TYPE STANDARD TABLE OF T703L,
      WA_T703L TYPE T703L,
      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: <T703L> TYPE T703L.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T703L.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T703L
  INTO TABLE IT_T703L.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T703L
*  INTO TABLE @DATA(IT_T703L2).
*--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_T703L INDEX 1 INTO DATA(WA_T703L2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T703L ASSIGNING <T703L>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T703L>-MANDT = 1.
<T703L>-LSTYP = 1.
<T703L>-DYNL0 = 1.
<T703L>-DYNL1 = 1.
<T703L>-DYNL2 = 1.

ENDLOOP.

LOOP AT IT_T703L INTO WA_T703L.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T703L-DYNL3, sy-vline,
  WA_T703L-DYNL4, sy-vline,
  WA_T703L-LGART, sy-vline,
  WA_T703L-NFPER, sy-vline,
  WA_T703L-NFGRU, sy-vline,
  WA_T703L-LKIST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T703L 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_T703L 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_T703L INTO WA_T703L.


*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_T703L_STR, 
MANDT TYPE STRING,
LSTYP TYPE STRING,
DYNL0 TYPE STRING,
DYNL1 TYPE STRING,
DYNL2 TYPE STRING,
DYNL3 TYPE STRING,
DYNL4 TYPE STRING,
LGART TYPE STRING,
NFPER TYPE STRING,
NFGRU TYPE STRING,
LKIST TYPE STRING,
LKSOL TYPE STRING,
LKVAR TYPE STRING,
LKKUM TYPE STRING,
GKIST TYPE STRING,
GKSOL TYPE STRING,
GKVAR TYPE STRING,
GKKUM TYPE STRING,
RFZGR TYPE STRING,
RFERG TYPE STRING,
IFPPS TYPE STRING,
RFPAY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T703L_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_T703L_STR-MANDT sy-vline 
WA_T703L_STR-LSTYP sy-vline 
WA_T703L_STR-DYNL0 sy-vline 
WA_T703L_STR-DYNL1 sy-vline 
WA_T703L_STR-DYNL2 sy-vline 
WA_T703L_STR-DYNL3 sy-vline 
WA_T703L_STR-DYNL4 sy-vline 
WA_T703L_STR-LGART sy-vline 
WA_T703L_STR-NFPER sy-vline 
WA_T703L_STR-NFGRU sy-vline 
WA_T703L_STR-LKIST sy-vline 
WA_T703L_STR-LKSOL sy-vline 
WA_T703L_STR-LKVAR sy-vline 
WA_T703L_STR-LKKUM sy-vline 
WA_T703L_STR-GKIST sy-vline 
WA_T703L_STR-GKSOL sy-vline 
WA_T703L_STR-GKVAR sy-vline 
WA_T703L_STR-GKKUM sy-vline 
WA_T703L_STR-RFZGR sy-vline 
WA_T703L_STR-RFERG sy-vline 
WA_T703L_STR-IFPPS sy-vline 
WA_T703L_STR-RFPAY sy-vline      INTO ld_text SEPARATED BY SPACE.

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