ABAP Select data from SAP table PDSPREQ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PDSPREQ
*  INTO TABLE @DATA(IT_PDSPREQ2).
*--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_PDSPREQ INDEX 1 INTO DATA(WA_PDSPREQ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PDSPREQ>-REQ_OBJID = 1.
<PDSPREQ>-DATUM = 1.
<PDSPREQ>-BEGIN_TIME = 1.
<PDSPREQ>-END_TIME = 1.
<PDSPREQ>-BEGIN_DATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PDSPREQ-END_DATE, sy-vline,
  WA_PDSPREQ-ORG_OTYPE, sy-vline,
  WA_PDSPREQ-ORG_OBJID, sy-vline,
  WA_PDSPREQ-SHIFT, sy-vline,
  WA_PDSPREQ-REQ_TYPE, sy-vline,
  WA_PDSPREQ-REQ_PRIO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PDSPREQ 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_PDSPREQ 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_PDSPREQ INTO WA_PDSPREQ.


*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_PDSPREQ_STR, 
REQ_OBJID TYPE STRING,
DATUM TYPE STRING,
BEGIN_TIME TYPE STRING,
END_TIME TYPE STRING,
BEGIN_DATE TYPE STRING,
END_DATE TYPE STRING,
ORG_OTYPE TYPE STRING,
ORG_OBJID TYPE STRING,
SHIFT TYPE STRING,
REQ_TYPE TYPE STRING,
REQ_PRIO TYPE STRING,
NORMAL TYPE STRING,
MINIMUM TYPE STRING,
MAXIMUM TYPE STRING,
FIT_REQ TYPE STRING,
JOB_OBJID TYPE STRING,
ADDWORK TYPE STRING,
SHIFTGROUP TYPE STRING,
SWITCH TYPE STRING,
QUAL_EXIST TYPE STRING,
REQMTTXT TYPE STRING,
REQMTTYFLAG TYPE STRING,
STNBY TYPE STRING,
TPROG TYPE STRING,
VARIA TYPE STRING,
AWART TYPE STRING,
AWTYP TYPE STRING,
ATTTY TYPE STRING,
ATTTYFLAG TYPE STRING,
FOREIGN_REQUEST TYPE STRING,
COMPLEX_REQ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PDSPREQ_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_PDSPREQ_STR-REQ_OBJID sy-vline 
WA_PDSPREQ_STR-DATUM sy-vline 
WA_PDSPREQ_STR-BEGIN_TIME sy-vline 
WA_PDSPREQ_STR-END_TIME sy-vline 
WA_PDSPREQ_STR-BEGIN_DATE sy-vline 
WA_PDSPREQ_STR-END_DATE sy-vline 
WA_PDSPREQ_STR-ORG_OTYPE sy-vline 
WA_PDSPREQ_STR-ORG_OBJID sy-vline 
WA_PDSPREQ_STR-SHIFT sy-vline 
WA_PDSPREQ_STR-REQ_TYPE sy-vline 
WA_PDSPREQ_STR-REQ_PRIO sy-vline 
WA_PDSPREQ_STR-NORMAL sy-vline 
WA_PDSPREQ_STR-MINIMUM sy-vline 
WA_PDSPREQ_STR-MAXIMUM sy-vline 
WA_PDSPREQ_STR-FIT_REQ sy-vline 
WA_PDSPREQ_STR-JOB_OBJID sy-vline 
WA_PDSPREQ_STR-ADDWORK sy-vline 
WA_PDSPREQ_STR-SHIFTGROUP sy-vline 
WA_PDSPREQ_STR-SWITCH sy-vline 
WA_PDSPREQ_STR-QUAL_EXIST sy-vline 
WA_PDSPREQ_STR-REQMTTXT sy-vline 
WA_PDSPREQ_STR-REQMTTYFLAG sy-vline 
WA_PDSPREQ_STR-STNBY sy-vline 
WA_PDSPREQ_STR-TPROG sy-vline 
WA_PDSPREQ_STR-VARIA sy-vline 
WA_PDSPREQ_STR-AWART sy-vline 
WA_PDSPREQ_STR-AWTYP sy-vline 
WA_PDSPREQ_STR-ATTTY sy-vline 
WA_PDSPREQ_STR-ATTTYFLAG sy-vline 
WA_PDSPREQ_STR-FOREIGN_REQUEST sy-vline 
WA_PDSPREQ_STR-COMPLEX_REQ sy-vline      INTO ld_text SEPARATED BY SPACE.

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