ABAP Select data from SAP table T554X into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP T554X 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 T554X. 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 T554X 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_T554X TYPE STANDARD TABLE OF T554X,
      WA_T554X TYPE T554X,
      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: <T554X> TYPE T554X.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T554X.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T554X
  INTO TABLE IT_T554X.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T554X
*  INTO TABLE @DATA(IT_T554X2).
*--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_T554X INDEX 1 INTO DATA(WA_T554X2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T554X ASSIGNING <T554X>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T554X>-MANDT = 1.
<T554X>-URLKL = 1.
<T554X>-ZEITY = 1.
<T554X>-RGMOD = 1.
<T554X>-SEQNO = 1.

ENDLOOP.

LOOP AT IT_T554X INTO WA_T554X.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T554X-WTAGE, sy-vline,
  WA_T554X-FKLAS, sy-vline,
  WA_T554X-ZMODK, sy-vline,
  WA_T554X-TPKLA, sy-vline,
  WA_T554X-TGTYP, sy-vline,
  WA_T554X-KTANZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T554X 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_T554X 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_T554X INTO WA_T554X.


*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_T554X_STR, 
MANDT TYPE STRING,
URLKL TYPE STRING,
ZEITY TYPE STRING,
RGMOD TYPE STRING,
SEQNO TYPE STRING,
WTAGE TYPE STRING,
FKLAS TYPE STRING,
ZMODK TYPE STRING,
TPKLA TYPE STRING,
TGTYP TYPE STRING,
KTANZ TYPE STRING,
URAR1 TYPE STRING,
URAR2 TYPE STRING,
URAR3 TYPE STRING,
URAR4 TYPE STRING,
URAR5 TYPE STRING,
URAR6 TYPE STRING,
URMIN TYPE STRING,
DEDIR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T554X_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_T554X_STR-MANDT sy-vline 
WA_T554X_STR-URLKL sy-vline 
WA_T554X_STR-ZEITY sy-vline 
WA_T554X_STR-RGMOD sy-vline 
WA_T554X_STR-SEQNO sy-vline 
WA_T554X_STR-WTAGE sy-vline 
WA_T554X_STR-FKLAS sy-vline 
WA_T554X_STR-ZMODK sy-vline 
WA_T554X_STR-TPKLA sy-vline 
WA_T554X_STR-TGTYP sy-vline 
WA_T554X_STR-KTANZ sy-vline 
WA_T554X_STR-URAR1 sy-vline 
WA_T554X_STR-URAR2 sy-vline 
WA_T554X_STR-URAR3 sy-vline 
WA_T554X_STR-URAR4 sy-vline 
WA_T554X_STR-URAR5 sy-vline 
WA_T554X_STR-URAR6 sy-vline 
WA_T554X_STR-URMIN sy-vline 
WA_T554X_STR-DEDIR sy-vline      INTO ld_text SEPARATED BY SPACE.

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