ABAP Select data from SAP table T7EG22 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T7EG22 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 T7EG22. 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 T7EG22 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_T7EG22 TYPE STANDARD TABLE OF T7EG22,
      WA_T7EG22 TYPE T7EG22,
      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: <T7EG22> TYPE T7EG22.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T7EG22.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T7EG22
  INTO TABLE IT_T7EG22.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T7EG22
*  INTO TABLE @DATA(IT_T7EG222).
*--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_T7EG22 INDEX 1 INTO DATA(WA_T7EG222).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T7EG22 ASSIGNING <T7EG22>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T7EG22>-MANDT = 1.
<T7EG22>-BUKRS = 1.
<T7EG22>-BUTXT = 1.
<T7EG22>-REGNO = 1.
<T7EG22>-BUNIT = 1.

ENDLOOP.

LOOP AT IT_T7EG22 INTO WA_T7EG22.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T7EG22-MANGR, sy-vline,
  WA_T7EG22-DESGN, sy-vline,
  WA_T7EG22-TAXNO, sy-vline,
  WA_T7EG22-CSIOA, sy-vline,
  WA_T7EG22-CSION, sy-vline,
  WA_T7EG22-FORMN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T7EG22 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_T7EG22 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_T7EG22 INTO WA_T7EG22.


*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_T7EG22_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
BUTXT TYPE STRING,
REGNO TYPE STRING,
BUNIT TYPE STRING,
MANGR TYPE STRING,
DESGN TYPE STRING,
TAXNO TYPE STRING,
CSIOA TYPE STRING,
CSION TYPE STRING,
FORMN TYPE STRING,
CABDE TYPE STRING,
FORMY TYPE STRING,
FALAW TYPE STRING,
ILLIR TYPE STRING,
ILLID TYPE STRING,
INJIR TYPE STRING,
INJID TYPE STRING,
DISCD TYPE STRING,
DISCR TYPE STRING,
ACTIS TYPE STRING,
FORMR TYPE STRING,
FORMS TYPE STRING,
SUBSP TYPE STRING,
REGAU TYPE STRING,
REVAU TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T7EG22_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_T7EG22_STR-MANDT sy-vline 
WA_T7EG22_STR-BUKRS sy-vline 
WA_T7EG22_STR-BUTXT sy-vline 
WA_T7EG22_STR-REGNO sy-vline 
WA_T7EG22_STR-BUNIT sy-vline 
WA_T7EG22_STR-MANGR sy-vline 
WA_T7EG22_STR-DESGN sy-vline 
WA_T7EG22_STR-TAXNO sy-vline 
WA_T7EG22_STR-CSIOA sy-vline 
WA_T7EG22_STR-CSION sy-vline 
WA_T7EG22_STR-FORMN sy-vline 
WA_T7EG22_STR-CABDE sy-vline 
WA_T7EG22_STR-FORMY sy-vline 
WA_T7EG22_STR-FALAW sy-vline 
WA_T7EG22_STR-ILLIR sy-vline 
WA_T7EG22_STR-ILLID sy-vline 
WA_T7EG22_STR-INJIR sy-vline 
WA_T7EG22_STR-INJID sy-vline 
WA_T7EG22_STR-DISCD sy-vline 
WA_T7EG22_STR-DISCR sy-vline 
WA_T7EG22_STR-ACTIS sy-vline 
WA_T7EG22_STR-FORMR sy-vline 
WA_T7EG22_STR-FORMS sy-vline 
WA_T7EG22_STR-SUBSP sy-vline 
WA_T7EG22_STR-REGAU sy-vline 
WA_T7EG22_STR-REVAU sy-vline      INTO ld_text SEPARATED BY SPACE.

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