ABAP Select data from SAP table T77WWW_CLTRANSD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T77WWW_CLTRANSD 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_CLTRANSD. 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_CLTRANSD 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_CLTRANSD TYPE STANDARD TABLE OF T77WWW_CLTRANSD,
      WA_T77WWW_CLTRANSD TYPE T77WWW_CLTRANSD,
      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_CLTRANSD> TYPE T77WWW_CLTRANSD.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T77WWW_CLTRANSD.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T77WWW_CLTRANSD
  INTO TABLE IT_T77WWW_CLTRANSD.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T77WWW_CLTRANSD
*  INTO TABLE @DATA(IT_T77WWW_CLTRANSD2).
*--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_CLTRANSD INDEX 1 INTO DATA(WA_T77WWW_CLTRANSD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T77WWW_CLTRANSD ASSIGNING <T77WWW_CLTRANSD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T77WWW_CLTRANSD>-MANDT = 1.
<T77WWW_CLTRANSD>-SRTFD = 1.
<T77WWW_CLTRANSD>-PERNR = 1.
<T77WWW_CLTRANSD>-REFNR = 1.
<T77WWW_CLTRANSD>-RETYP = 1.

ENDLOOP.

LOOP AT IT_T77WWW_CLTRANSD INTO WA_T77WWW_CLTRANSD.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T77WWW_CLTRANSD-RQTYP, sy-vline,
  WA_T77WWW_CLTRANSD-CREFM, sy-vline,
  WA_T77WWW_CLTRANSD-RQCID, sy-vline,
  WA_T77WWW_CLTRANSD-RQCDT, sy-vline,
  WA_T77WWW_CLTRANSD-RQCTM, sy-vline,
  WA_T77WWW_CLTRANSD-RQCAN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T77WWW_CLTRANSD 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_CLTRANSD 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_CLTRANSD INTO WA_T77WWW_CLTRANSD.


*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_CLTRANSD_STR, 
MANDT TYPE STRING,
SRTFD TYPE STRING,
PERNR TYPE STRING,
REFNR TYPE STRING,
RETYP TYPE STRING,
RQTYP TYPE STRING,
CREFM TYPE STRING,
RQCID TYPE STRING,
RQCDT TYPE STRING,
RQCTM TYPE STRING,
RQCAN TYPE STRING,
RSNCD TYPE STRING,
ARDDT TYPE STRING,
ITUDT TYPE STRING,
PAYDT TYPE STRING,
CODAT TYPE STRING,
ITBDT TYPE STRING,
PHASE TYPE STRING,
CSTAT TYPE STRING,
ASREF TYPE STRING,
TSR01 TYPE STRING,
TSR02 TYPE STRING,
OCFLG TYPE STRING,
TEXRQ TYPE STRING,
WRKID TYPE STRING,
OCPVD TYPE STRING,
DCLAG TYPE STRING,
ERRFG TYPE STRING,
ERRNO TYPE STRING,
APUID TYPE STRING,
APLVL TYPE STRING,
APGRP TYPE STRING,
LCUID TYPE STRING,
LCHDT TYPE STRING,
LCHTM TYPE STRING,
ISMST TYPE STRING,
EEMOB TYPE STRING,
APMOB TYPE STRING,
ADMOB TYPE STRING,
SCMCD TYPE STRING,
PCLMD TYPE STRING,
ISCMP TYPE STRING,
PRTNO TYPE STRING,
TRPNO TYPE STRING,
BEGDA TYPE STRING,
ENNDA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T77WWW_CLTRANSD_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_CLTRANSD_STR-MANDT sy-vline 
WA_T77WWW_CLTRANSD_STR-SRTFD sy-vline 
WA_T77WWW_CLTRANSD_STR-PERNR sy-vline 
WA_T77WWW_CLTRANSD_STR-REFNR sy-vline 
WA_T77WWW_CLTRANSD_STR-RETYP sy-vline 
WA_T77WWW_CLTRANSD_STR-RQTYP sy-vline 
WA_T77WWW_CLTRANSD_STR-CREFM sy-vline 
WA_T77WWW_CLTRANSD_STR-RQCID sy-vline 
WA_T77WWW_CLTRANSD_STR-RQCDT sy-vline 
WA_T77WWW_CLTRANSD_STR-RQCTM sy-vline 
WA_T77WWW_CLTRANSD_STR-RQCAN sy-vline 
WA_T77WWW_CLTRANSD_STR-RSNCD sy-vline 
WA_T77WWW_CLTRANSD_STR-ARDDT sy-vline 
WA_T77WWW_CLTRANSD_STR-ITUDT sy-vline 
WA_T77WWW_CLTRANSD_STR-PAYDT sy-vline 
WA_T77WWW_CLTRANSD_STR-CODAT sy-vline 
WA_T77WWW_CLTRANSD_STR-ITBDT sy-vline 
WA_T77WWW_CLTRANSD_STR-PHASE sy-vline 
WA_T77WWW_CLTRANSD_STR-CSTAT sy-vline 
WA_T77WWW_CLTRANSD_STR-ASREF sy-vline 
WA_T77WWW_CLTRANSD_STR-TSR01 sy-vline 
WA_T77WWW_CLTRANSD_STR-TSR02 sy-vline 
WA_T77WWW_CLTRANSD_STR-OCFLG sy-vline 
WA_T77WWW_CLTRANSD_STR-TEXRQ sy-vline 
WA_T77WWW_CLTRANSD_STR-WRKID sy-vline 
WA_T77WWW_CLTRANSD_STR-OCPVD sy-vline 
WA_T77WWW_CLTRANSD_STR-DCLAG sy-vline 
WA_T77WWW_CLTRANSD_STR-ERRFG sy-vline 
WA_T77WWW_CLTRANSD_STR-ERRNO sy-vline 
WA_T77WWW_CLTRANSD_STR-APUID sy-vline 
WA_T77WWW_CLTRANSD_STR-APLVL sy-vline 
WA_T77WWW_CLTRANSD_STR-APGRP sy-vline 
WA_T77WWW_CLTRANSD_STR-LCUID sy-vline 
WA_T77WWW_CLTRANSD_STR-LCHDT sy-vline 
WA_T77WWW_CLTRANSD_STR-LCHTM sy-vline 
WA_T77WWW_CLTRANSD_STR-ISMST sy-vline 
WA_T77WWW_CLTRANSD_STR-EEMOB sy-vline 
WA_T77WWW_CLTRANSD_STR-APMOB sy-vline 
WA_T77WWW_CLTRANSD_STR-ADMOB sy-vline 
WA_T77WWW_CLTRANSD_STR-SCMCD sy-vline 
WA_T77WWW_CLTRANSD_STR-PCLMD sy-vline 
WA_T77WWW_CLTRANSD_STR-ISCMP sy-vline 
WA_T77WWW_CLTRANSD_STR-PRTNO sy-vline 
WA_T77WWW_CLTRANSD_STR-TRPNO sy-vline 
WA_T77WWW_CLTRANSD_STR-BEGDA sy-vline 
WA_T77WWW_CLTRANSD_STR-ENNDA sy-vline      INTO ld_text SEPARATED BY SPACE.

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