ABAP Select data from SAP table V_T77WWW_CLRQCH into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_T77WWW_CLRQCH 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 V_T77WWW_CLRQCH. 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 V_T77WWW_CLRQCH 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_V_T77WWW_CLRQCH TYPE STANDARD TABLE OF V_T77WWW_CLRQCH,
      WA_V_T77WWW_CLRQCH TYPE V_T77WWW_CLRQCH,
      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: <V_T77WWW_CLRQCH> TYPE V_T77WWW_CLRQCH.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V_T77WWW_CLRQCH.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V_T77WWW_CLRQCH
  INTO TABLE IT_V_T77WWW_CLRQCH.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_T77WWW_CLRQCH
*  INTO TABLE @DATA(IT_V_T77WWW_CLRQCH2).
*--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_V_T77WWW_CLRQCH INDEX 1 INTO DATA(WA_V_T77WWW_CLRQCH2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_T77WWW_CLRQCH ASSIGNING <V_T77WWW_CLRQCH>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_T77WWW_CLRQCH>-MANDT = 1.
<V_T77WWW_CLRQCH>-MOLGA = 1.
<V_T77WWW_CLRQCH>-RETYP = 1.
<V_T77WWW_CLRQCH>-RQTYP = 1.
<V_T77WWW_CLRQCH>-SCMCD = 1.

ENDLOOP.

LOOP AT IT_V_T77WWW_CLRQCH INTO WA_V_T77WWW_CLRQCH.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_T77WWW_CLRQCH-ENDDA, sy-vline,
  WA_V_T77WWW_CLRQCH-BEGDA, sy-vline,
  WA_V_T77WWW_CLRQCH-ALCRT, sy-vline,
  WA_V_T77WWW_CLRQCH-ALDEL, sy-vline,
  WA_V_T77WWW_CLRQCH-ALDEP, sy-vline,
  WA_V_T77WWW_CLRQCH-DEPLV, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_T77WWW_CLRQCH 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_V_T77WWW_CLRQCH 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_V_T77WWW_CLRQCH INTO WA_V_T77WWW_CLRQCH.


*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_V_T77WWW_CLRQCH_STR, 
MANDT TYPE STRING,
MOLGA TYPE STRING,
RETYP TYPE STRING,
RQTYP TYPE STRING,
SCMCD TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
ALCRT TYPE STRING,
ALDEL TYPE STRING,
ALDEP TYPE STRING,
DEPLV TYPE STRING,
ALTEX TYPE STRING,
UHLCF TYPE STRING,
UMLCF TYPE STRING,
UMLAF TYPE STRING,
PMTMD TYPE STRING,
ALDCL TYPE STRING,
ALEDT TYPE STRING,
DFAMT TYPE STRING,
DFTMT TYPE STRING,
PETYP TYPE STRING,
PEFRQ TYPE STRING,
ALATM TYPE STRING,
FIXML TYPE STRING,
NOVRW TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_T77WWW_CLRQCH_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_V_T77WWW_CLRQCH_STR-MANDT sy-vline 
WA_V_T77WWW_CLRQCH_STR-MOLGA sy-vline 
WA_V_T77WWW_CLRQCH_STR-RETYP sy-vline 
WA_V_T77WWW_CLRQCH_STR-RQTYP sy-vline 
WA_V_T77WWW_CLRQCH_STR-SCMCD sy-vline 
WA_V_T77WWW_CLRQCH_STR-ENDDA sy-vline 
WA_V_T77WWW_CLRQCH_STR-BEGDA sy-vline 
WA_V_T77WWW_CLRQCH_STR-ALCRT sy-vline 
WA_V_T77WWW_CLRQCH_STR-ALDEL sy-vline 
WA_V_T77WWW_CLRQCH_STR-ALDEP sy-vline 
WA_V_T77WWW_CLRQCH_STR-DEPLV sy-vline 
WA_V_T77WWW_CLRQCH_STR-ALTEX sy-vline 
WA_V_T77WWW_CLRQCH_STR-UHLCF sy-vline 
WA_V_T77WWW_CLRQCH_STR-UMLCF sy-vline 
WA_V_T77WWW_CLRQCH_STR-UMLAF sy-vline 
WA_V_T77WWW_CLRQCH_STR-PMTMD sy-vline 
WA_V_T77WWW_CLRQCH_STR-ALDCL sy-vline 
WA_V_T77WWW_CLRQCH_STR-ALEDT sy-vline 
WA_V_T77WWW_CLRQCH_STR-DFAMT sy-vline 
WA_V_T77WWW_CLRQCH_STR-DFTMT sy-vline 
WA_V_T77WWW_CLRQCH_STR-PETYP sy-vline 
WA_V_T77WWW_CLRQCH_STR-PEFRQ sy-vline 
WA_V_T77WWW_CLRQCH_STR-ALATM sy-vline 
WA_V_T77WWW_CLRQCH_STR-FIXML sy-vline 
WA_V_T77WWW_CLRQCH_STR-NOVRW sy-vline      INTO ld_text SEPARATED BY SPACE.

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