ABAP Select data from SAP table T5W4B into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T5W4B 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 T5W4B. 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 T5W4B 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_T5W4B TYPE STANDARD TABLE OF T5W4B,
      WA_T5W4B TYPE T5W4B,
      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: <T5W4B> TYPE T5W4B.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T5W4B.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T5W4B
  INTO TABLE IT_T5W4B.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T5W4B
*  INTO TABLE @DATA(IT_T5W4B2).
*--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_T5W4B INDEX 1 INTO DATA(WA_T5W4B2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T5W4B ASSIGNING <T5W4B>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T5W4B>-MANDT = 1.
<T5W4B>-PERSA = 1.
<T5W4B>-PSECTION = 1.
<T5W4B>-PGROUP = 1.
<T5W4B>-PSGROUP = 1.

ENDLOOP.

LOOP AT IT_T5W4B INTO WA_T5W4B.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T5W4B-URAR, sy-vline,
  WA_T5W4B-DATAR, sy-vline,
  WA_T5W4B-SDURAT, sy-vline,
  WA_T5W4B-EDURAT, sy-vline,
  WA_T5W4B-ENDDA, sy-vline,
  WA_T5W4B-LTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T5W4B 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_T5W4B 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_T5W4B INTO WA_T5W4B.


*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_T5W4B_STR, 
MANDT TYPE STRING,
PERSA TYPE STRING,
PSECTION TYPE STRING,
PGROUP TYPE STRING,
PSGROUP TYPE STRING,
URAR TYPE STRING,
DATAR TYPE STRING,
SDURAT TYPE STRING,
EDURAT TYPE STRING,
ENDDA TYPE STRING,
LTYPE TYPE STRING,
LQDAYS TYPE STRING,
CDAYS TYPE STRING,
CDURAT TYPE STRING,
MDURAT TYPE STRING,
BEGDA TYPE STRING,
INTERV TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T5W4B_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_T5W4B_STR-MANDT sy-vline 
WA_T5W4B_STR-PERSA sy-vline 
WA_T5W4B_STR-PSECTION sy-vline 
WA_T5W4B_STR-PGROUP sy-vline 
WA_T5W4B_STR-PSGROUP sy-vline 
WA_T5W4B_STR-URAR sy-vline 
WA_T5W4B_STR-DATAR sy-vline 
WA_T5W4B_STR-SDURAT sy-vline 
WA_T5W4B_STR-EDURAT sy-vline 
WA_T5W4B_STR-ENDDA sy-vline 
WA_T5W4B_STR-LTYPE sy-vline 
WA_T5W4B_STR-LQDAYS sy-vline 
WA_T5W4B_STR-CDAYS sy-vline 
WA_T5W4B_STR-CDURAT sy-vline 
WA_T5W4B_STR-MDURAT sy-vline 
WA_T5W4B_STR-BEGDA sy-vline 
WA_T5W4B_STR-INTERV sy-vline      INTO ld_text SEPARATED BY SPACE.

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