ABAP Select data from SAP table PIN_REQCH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIN_REQCH
*  INTO TABLE @DATA(IT_PIN_REQCH2).
*--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_PIN_REQCH INDEX 1 INTO DATA(WA_PIN_REQCH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIN_REQCH>-RETYP = 1.
<PIN_REQCH>-RQTYP = 1.
<PIN_REQCH>-SCMCD = 1.
<PIN_REQCH>-ALCRT = 1.
<PIN_REQCH>-ALEDT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIN_REQCH-ALDEL, sy-vline,
  WA_PIN_REQCH-ALTEX, sy-vline,
  WA_PIN_REQCH-PMTMD, sy-vline,
  WA_PIN_REQCH-UHLCF, sy-vline,
  WA_PIN_REQCH-UMLCF, sy-vline,
  WA_PIN_REQCH-UMLAF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIN_REQCH 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_PIN_REQCH 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_PIN_REQCH INTO WA_PIN_REQCH.


*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_PIN_REQCH_STR, 
RETYP TYPE STRING,
RQTYP TYPE STRING,
SCMCD TYPE STRING,
ALCRT TYPE STRING,
ALEDT TYPE STRING,
ALDEL TYPE STRING,
ALTEX TYPE STRING,
PMTMD TYPE STRING,
UHLCF TYPE STRING,
UMLCF TYPE STRING,
UMLAF TYPE STRING,
ALDCL TYPE STRING,
ALDEP TYPE STRING,
DEPLV TYPE STRING,
ISLTC TYPE STRING,
ISOAC TYPE STRING,
UMLAC TYPE STRING,
ISCBV TYPE STRING,
ALATM TYPE STRING,
FIXML TYPE STRING,
NOVRW TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIN_REQCH_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_PIN_REQCH_STR-RETYP sy-vline 
WA_PIN_REQCH_STR-RQTYP sy-vline 
WA_PIN_REQCH_STR-SCMCD sy-vline 
WA_PIN_REQCH_STR-ALCRT sy-vline 
WA_PIN_REQCH_STR-ALEDT sy-vline 
WA_PIN_REQCH_STR-ALDEL sy-vline 
WA_PIN_REQCH_STR-ALTEX sy-vline 
WA_PIN_REQCH_STR-PMTMD sy-vline 
WA_PIN_REQCH_STR-UHLCF sy-vline 
WA_PIN_REQCH_STR-UMLCF sy-vline 
WA_PIN_REQCH_STR-UMLAF sy-vline 
WA_PIN_REQCH_STR-ALDCL sy-vline 
WA_PIN_REQCH_STR-ALDEP sy-vline 
WA_PIN_REQCH_STR-DEPLV sy-vline 
WA_PIN_REQCH_STR-ISLTC sy-vline 
WA_PIN_REQCH_STR-ISOAC sy-vline 
WA_PIN_REQCH_STR-UMLAC sy-vline 
WA_PIN_REQCH_STR-ISCBV sy-vline 
WA_PIN_REQCH_STR-ALATM sy-vline 
WA_PIN_REQCH_STR-FIXML sy-vline 
WA_PIN_REQCH_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.