ABAP Select data from SAP table PDRQ2 into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PDRQ2 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 PDRQ2. 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 PDRQ2 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_PDRQ2 TYPE STANDARD TABLE OF PDRQ2,
      WA_PDRQ2 TYPE PDRQ2,
      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: <PDRQ2> TYPE PDRQ2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PDRQ2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PDRQ2
  INTO TABLE IT_PDRQ2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PDRQ2
*  INTO TABLE @DATA(IT_PDRQ22).
*--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_PDRQ2 INDEX 1 INTO DATA(WA_PDRQ22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PDRQ2 ASSIGNING <PDRQ2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PDRQ2>-BEGDA = 1.
<PDRQ2>-ENDDA = 1.
<PDRQ2>-REQMTTY = 1.
<PDRQ2>-REQMTTYTXT = 1.
<PDRQ2>-OBJTY = 1.

ENDLOOP.

LOOP AT IT_PDRQ2 INTO WA_PDRQ2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PDRQ2-OBJID, sy-vline,
  WA_PDRQ2-OBJSHORT, sy-vline,
  WA_PDRQ2-OBJSEARK, sy-vline,
  WA_PDRQ2-OBJTYTXT, sy-vline,
  WA_PDRQ2-OBJTXT, sy-vline,
  WA_PDRQ2-OBEGDA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PDRQ2 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_PDRQ2 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_PDRQ2 INTO WA_PDRQ2.


*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_PDRQ2_STR, 
BEGDA TYPE STRING,
ENDDA TYPE STRING,
REQMTTY TYPE STRING,
REQMTTYTXT TYPE STRING,
OBJTY TYPE STRING,
OBJID TYPE STRING,
OBJSHORT TYPE STRING,
OBJSEARK TYPE STRING,
OBJTYTXT TYPE STRING,
OBJTXT TYPE STRING,
OBEGDA TYPE STRING,
OENDDA TYPE STRING,
SGRPBEGDA TYPE STRING,
SGRPENDDA TYPE STRING,
MARK_LINE TYPE STRING,
VBEGDA TYPE STRING,
VENDDA TYPE STRING,
QUALFLAG TYPE STRING,
QUALICON TYPE STRING,
QUALINDEX TYPE STRING,
QUALPUSH TYPE STRING,
JOBOBJID TYPE STRING,
JOBBEGDA TYPE STRING,
JOBENDDA TYPE STRING,
JOBSTXT TYPE STRING,
JOBTXT TYPE STRING,
REQMTOBJID TYPE STRING,
REQMTSTXT TYPE STRING,
REQMTTXT TYPE STRING,
REQMTTYFLAG TYPE STRING,
ADDWORK TYPE STRING,
ADDWORKTXT TYPE STRING,
TMFLAG TYPE STRING,
SFTABBR TYPE STRING,
SFTTXT TYPE STRING,
SFTBEGTM TYPE STRING,
SFTENDTM TYPE STRING,
TPROG TYPE STRING,
VARIA TYPE STRING,
AWART TYPE STRING,
AWTYP TYPE STRING,
STNBY TYPE STRING,
ATTTY TYPE STRING,
ATTTYFLAG TYPE STRING,
SRINDEX TYPE STRING,
MARK_LINE7 TYPE STRING,
ATTNR TYPE STRING,
NORMAL TYPE STRING,
MINIMUM TYPE STRING,
MAXIMUM TYPE STRING,
BEGTM TYPE STRING,
ENDTM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PDRQ2_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_PDRQ2_STR-BEGDA sy-vline 
WA_PDRQ2_STR-ENDDA sy-vline 
WA_PDRQ2_STR-REQMTTY sy-vline 
WA_PDRQ2_STR-REQMTTYTXT sy-vline 
WA_PDRQ2_STR-OBJTY sy-vline 
WA_PDRQ2_STR-OBJID sy-vline 
WA_PDRQ2_STR-OBJSHORT sy-vline 
WA_PDRQ2_STR-OBJSEARK sy-vline 
WA_PDRQ2_STR-OBJTYTXT sy-vline 
WA_PDRQ2_STR-OBJTXT sy-vline 
WA_PDRQ2_STR-OBEGDA sy-vline 
WA_PDRQ2_STR-OENDDA sy-vline 
WA_PDRQ2_STR-SGRPBEGDA sy-vline 
WA_PDRQ2_STR-SGRPENDDA sy-vline 
WA_PDRQ2_STR-MARK_LINE sy-vline 
WA_PDRQ2_STR-VBEGDA sy-vline 
WA_PDRQ2_STR-VENDDA sy-vline 
WA_PDRQ2_STR-QUALFLAG sy-vline 
WA_PDRQ2_STR-QUALICON sy-vline 
WA_PDRQ2_STR-QUALINDEX sy-vline 
WA_PDRQ2_STR-QUALPUSH sy-vline 
WA_PDRQ2_STR-JOBOBJID sy-vline 
WA_PDRQ2_STR-JOBBEGDA sy-vline 
WA_PDRQ2_STR-JOBENDDA sy-vline 
WA_PDRQ2_STR-JOBSTXT sy-vline 
WA_PDRQ2_STR-JOBTXT sy-vline 
WA_PDRQ2_STR-REQMTOBJID sy-vline 
WA_PDRQ2_STR-REQMTSTXT sy-vline 
WA_PDRQ2_STR-REQMTTXT sy-vline 
WA_PDRQ2_STR-REQMTTYFLAG sy-vline 
WA_PDRQ2_STR-ADDWORK sy-vline 
WA_PDRQ2_STR-ADDWORKTXT sy-vline 
WA_PDRQ2_STR-TMFLAG sy-vline 
WA_PDRQ2_STR-SFTABBR sy-vline 
WA_PDRQ2_STR-SFTTXT sy-vline 
WA_PDRQ2_STR-SFTBEGTM sy-vline 
WA_PDRQ2_STR-SFTENDTM sy-vline 
WA_PDRQ2_STR-TPROG sy-vline 
WA_PDRQ2_STR-VARIA sy-vline 
WA_PDRQ2_STR-AWART sy-vline 
WA_PDRQ2_STR-AWTYP sy-vline 
WA_PDRQ2_STR-STNBY sy-vline 
WA_PDRQ2_STR-ATTTY sy-vline 
WA_PDRQ2_STR-ATTTYFLAG sy-vline 
WA_PDRQ2_STR-SRINDEX sy-vline 
WA_PDRQ2_STR-MARK_LINE7 sy-vline 
WA_PDRQ2_STR-ATTNR sy-vline 
WA_PDRQ2_STR-NORMAL sy-vline 
WA_PDRQ2_STR-MINIMUM sy-vline 
WA_PDRQ2_STR-MAXIMUM sy-vline 
WA_PDRQ2_STR-BEGTM sy-vline 
WA_PDRQ2_STR-ENDTM sy-vline      INTO ld_text SEPARATED BY SPACE.

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