ABAP Select data from SAP table T804B 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 T804B 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 T804B. 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 T804B 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_T804B TYPE STANDARD TABLE OF T804B,
      WA_T804B TYPE T804B,
      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: <T804B> TYPE T804B.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T804B.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T804B
  INTO TABLE IT_T804B.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T804B
*  INTO TABLE @DATA(IT_T804B2).
*--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_T804B INDEX 1 INTO DATA(WA_T804B2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T804B ASSIGNING <T804B>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T804B>-TAB = 1.
<T804B>-FNAME = 1.
<T804B>-DAFL1 = 1.
<T804B>-DAFL2 = 1.
<T804B>-DAFL3 = 1.

ENDLOOP.

LOOP AT IT_T804B INTO WA_T804B.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T804B-DAFL4, sy-vline,
  WA_T804B-DAFL5, sy-vline,
  WA_T804B-FTYPE, sy-vline,
  WA_T804B-GSIZE, sy-vline,
  WA_T804B-PER00, sy-vline,
  WA_T804B-MAXPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T804B 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_T804B 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_T804B INTO WA_T804B.


*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_T804B_STR, 
TAB TYPE STRING,
FNAME TYPE STRING,
DAFL1 TYPE STRING,
DAFL2 TYPE STRING,
DAFL3 TYPE STRING,
DAFL4 TYPE STRING,
DAFL5 TYPE STRING,
FTYPE TYPE STRING,
GSIZE TYPE STRING,
PER00 TYPE STRING,
MAXPE TYPE STRING,
PEFLD TYPE STRING,
CNT TYPE STRING,
ADFLD TYPE STRING,
ADVAL TYPE STRING,
CUFLD TYPE STRING,
CFORM TYPE STRING,
GOFFS TYPE STRING,
PTYPE1 TYPE STRING,
PLENGTH1 TYPE STRING,
PTYPE2 TYPE STRING,
PLENGTH2 TYPE STRING,
PTYPE3 TYPE STRING,
PLENGTH3 TYPE STRING,
PNAME1 TYPE STRING,
PNAME2 TYPE STRING,
PNAME3 TYPE STRING,
ADDTB1 TYPE STRING,
ADDTB2 TYPE STRING,
ADDTB3 TYPE STRING,
ADDTB4 TYPE STRING,
ADDTB5 TYPE STRING,
CPOSITION TYPE STRING,
COPERANDS TYPE STRING,
CFORM2 TYPE STRING,
PCLASS TYPE STRING,
DECIMALS TYPE STRING,
CUFLD2 TYPE STRING,
SEQNR TYPE STRING,
AVERAGE TYPE STRING,
AVER_FIELD TYPE STRING,
AVER_FORM TYPE STRING,
AVER_PARM1 TYPE STRING,
AVER_PARM2 TYPE STRING,
AVER_PARM3 TYPE STRING,
LIKE_FLD1 TYPE STRING,
LIKE_FLD2 TYPE STRING,
LIKE_FLD3 TYPE STRING,
PARAM_ID1 TYPE STRING,
PARAM_ID2 TYPE STRING,
PARAM_ID3 TYPE STRING,
REQ_FLD1 TYPE STRING,
REQ_FLD2 TYPE STRING,
REQ_FLD3 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T804B_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_T804B_STR-TAB sy-vline 
WA_T804B_STR-FNAME sy-vline 
WA_T804B_STR-DAFL1 sy-vline 
WA_T804B_STR-DAFL2 sy-vline 
WA_T804B_STR-DAFL3 sy-vline 
WA_T804B_STR-DAFL4 sy-vline 
WA_T804B_STR-DAFL5 sy-vline 
WA_T804B_STR-FTYPE sy-vline 
WA_T804B_STR-GSIZE sy-vline 
WA_T804B_STR-PER00 sy-vline 
WA_T804B_STR-MAXPE sy-vline 
WA_T804B_STR-PEFLD sy-vline 
WA_T804B_STR-CNT sy-vline 
WA_T804B_STR-ADFLD sy-vline 
WA_T804B_STR-ADVAL sy-vline 
WA_T804B_STR-CUFLD sy-vline 
WA_T804B_STR-CFORM sy-vline 
WA_T804B_STR-GOFFS sy-vline 
WA_T804B_STR-PTYPE1 sy-vline 
WA_T804B_STR-PLENGTH1 sy-vline 
WA_T804B_STR-PTYPE2 sy-vline 
WA_T804B_STR-PLENGTH2 sy-vline 
WA_T804B_STR-PTYPE3 sy-vline 
WA_T804B_STR-PLENGTH3 sy-vline 
WA_T804B_STR-PNAME1 sy-vline 
WA_T804B_STR-PNAME2 sy-vline 
WA_T804B_STR-PNAME3 sy-vline 
WA_T804B_STR-ADDTB1 sy-vline 
WA_T804B_STR-ADDTB2 sy-vline 
WA_T804B_STR-ADDTB3 sy-vline 
WA_T804B_STR-ADDTB4 sy-vline 
WA_T804B_STR-ADDTB5 sy-vline 
WA_T804B_STR-CPOSITION sy-vline 
WA_T804B_STR-COPERANDS sy-vline 
WA_T804B_STR-CFORM2 sy-vline 
WA_T804B_STR-PCLASS sy-vline 
WA_T804B_STR-DECIMALS sy-vline 
WA_T804B_STR-CUFLD2 sy-vline 
WA_T804B_STR-SEQNR sy-vline 
WA_T804B_STR-AVERAGE sy-vline 
WA_T804B_STR-AVER_FIELD sy-vline 
WA_T804B_STR-AVER_FORM sy-vline 
WA_T804B_STR-AVER_PARM1 sy-vline 
WA_T804B_STR-AVER_PARM2 sy-vline 
WA_T804B_STR-AVER_PARM3 sy-vline 
WA_T804B_STR-LIKE_FLD1 sy-vline 
WA_T804B_STR-LIKE_FLD2 sy-vline 
WA_T804B_STR-LIKE_FLD3 sy-vline 
WA_T804B_STR-PARAM_ID1 sy-vline 
WA_T804B_STR-PARAM_ID2 sy-vline 
WA_T804B_STR-PARAM_ID3 sy-vline 
WA_T804B_STR-REQ_FLD1 sy-vline 
WA_T804B_STR-REQ_FLD2 sy-vline 
WA_T804B_STR-REQ_FLD3 sy-vline      INTO ld_text SEPARATED BY SPACE.

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