ABAP Select data from SAP table T77WWW_GACCML into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T77WWW_GACCML 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 T77WWW_GACCML. 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 T77WWW_GACCML 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_T77WWW_GACCML TYPE STANDARD TABLE OF T77WWW_GACCML,
      WA_T77WWW_GACCML TYPE T77WWW_GACCML,
      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: <T77WWW_GACCML> TYPE T77WWW_GACCML.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T77WWW_GACCML.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T77WWW_GACCML
  INTO TABLE IT_T77WWW_GACCML.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T77WWW_GACCML
*  INTO TABLE @DATA(IT_T77WWW_GACCML2).
*--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_T77WWW_GACCML INDEX 1 INTO DATA(WA_T77WWW_GACCML2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T77WWW_GACCML ASSIGNING <T77WWW_GACCML>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T77WWW_GACCML>-MANDT = 1.
<T77WWW_GACCML>-APPNO = 1.
<T77WWW_GACCML>-GATYP = 1.
<T77WWW_GACCML>-TSR01 = 1.
<T77WWW_GACCML>-TSR02 = 1.

ENDLOOP.

LOOP AT IT_T77WWW_GACCML INTO WA_T77WWW_GACCML.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T77WWW_GACCML-PHASE, sy-vline,
  WA_T77WWW_GACCML-CSTAT, sy-vline,
  WA_T77WWW_GACCML-ENDDA, sy-vline,
  WA_T77WWW_GACCML-BEGDA, sy-vline,
  WA_T77WWW_GACCML-SNDIM, sy-vline,
  WA_T77WWW_GACCML-EMPML, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T77WWW_GACCML 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_T77WWW_GACCML 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_T77WWW_GACCML INTO WA_T77WWW_GACCML.


*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_T77WWW_GACCML_STR, 
MANDT TYPE STRING,
APPNO TYPE STRING,
GATYP TYPE STRING,
TSR01 TYPE STRING,
TSR02 TYPE STRING,
PHASE TYPE STRING,
CSTAT TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
SNDIM TYPE STRING,
EMPML TYPE STRING,
EMPSJ TYPE STRING,
EMPAT TYPE STRING,
EMPDT TYPE STRING,
EMPCM TYPE STRING,
EMPHP TYPE STRING,
EMPAP TYPE STRING,
EMPAD TYPE STRING,
APPML TYPE STRING,
APPSJ TYPE STRING,
APPAT TYPE STRING,
APPDT TYPE STRING,
APPCM TYPE STRING,
APPHP TYPE STRING,
APPEE TYPE STRING,
APPAD TYPE STRING,
ADMML TYPE STRING,
ADMSJ TYPE STRING,
ADMAT TYPE STRING,
ADMDT TYPE STRING,
ADMCM TYPE STRING,
ADMHP TYPE STRING,
ADMEE TYPE STRING,
ADMAP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T77WWW_GACCML_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_T77WWW_GACCML_STR-MANDT sy-vline 
WA_T77WWW_GACCML_STR-APPNO sy-vline 
WA_T77WWW_GACCML_STR-GATYP sy-vline 
WA_T77WWW_GACCML_STR-TSR01 sy-vline 
WA_T77WWW_GACCML_STR-TSR02 sy-vline 
WA_T77WWW_GACCML_STR-PHASE sy-vline 
WA_T77WWW_GACCML_STR-CSTAT sy-vline 
WA_T77WWW_GACCML_STR-ENDDA sy-vline 
WA_T77WWW_GACCML_STR-BEGDA sy-vline 
WA_T77WWW_GACCML_STR-SNDIM sy-vline 
WA_T77WWW_GACCML_STR-EMPML sy-vline 
WA_T77WWW_GACCML_STR-EMPSJ sy-vline 
WA_T77WWW_GACCML_STR-EMPAT sy-vline 
WA_T77WWW_GACCML_STR-EMPDT sy-vline 
WA_T77WWW_GACCML_STR-EMPCM sy-vline 
WA_T77WWW_GACCML_STR-EMPHP sy-vline 
WA_T77WWW_GACCML_STR-EMPAP sy-vline 
WA_T77WWW_GACCML_STR-EMPAD sy-vline 
WA_T77WWW_GACCML_STR-APPML sy-vline 
WA_T77WWW_GACCML_STR-APPSJ sy-vline 
WA_T77WWW_GACCML_STR-APPAT sy-vline 
WA_T77WWW_GACCML_STR-APPDT sy-vline 
WA_T77WWW_GACCML_STR-APPCM sy-vline 
WA_T77WWW_GACCML_STR-APPHP sy-vline 
WA_T77WWW_GACCML_STR-APPEE sy-vline 
WA_T77WWW_GACCML_STR-APPAD sy-vline 
WA_T77WWW_GACCML_STR-ADMML sy-vline 
WA_T77WWW_GACCML_STR-ADMSJ sy-vline 
WA_T77WWW_GACCML_STR-ADMAT sy-vline 
WA_T77WWW_GACCML_STR-ADMDT sy-vline 
WA_T77WWW_GACCML_STR-ADMCM sy-vline 
WA_T77WWW_GACCML_STR-ADMHP sy-vline 
WA_T77WWW_GACCML_STR-ADMEE sy-vline 
WA_T77WWW_GACCML_STR-ADMAP sy-vline      INTO ld_text SEPARATED BY SPACE.

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