ABAP Select data from SAP table PIQDB_DE_REPREG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQDB_DE_REPREG
*  INTO TABLE @DATA(IT_PIQDB_DE_REPREG2).
*--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_PIQDB_DE_REPREG INDEX 1 INTO DATA(WA_PIQDB_DE_REPREG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQDB_DE_REPREG>-MANDT = 1.
<PIQDB_DE_REPREG>-RUNID = 1.
<PIQDB_DE_REPREG>-ST_OBJID = 1.
<PIQDB_DE_REPREG>-PROGNR = 1.
<PIQDB_DE_REPREG>-REGTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQDB_DE_REPREG-LOA_DEREG_RSN, sy-vline,
  WA_PIQDB_DE_REPREG-STUDYTYP, sy-vline,
  WA_PIQDB_DE_REPREG-FULLPART, sy-vline,
  WA_PIQDB_DE_REPREG-SUBJECTSEM, sy-vline,
  WA_PIQDB_DE_REPREG-TGT_DEGREE, sy-vline,
  WA_PIQDB_DE_REPREG-TGT_SUBJECT1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQDB_DE_REPREG 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_PIQDB_DE_REPREG 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_PIQDB_DE_REPREG INTO WA_PIQDB_DE_REPREG.


*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_PIQDB_DE_REPREG_STR, 
MANDT TYPE STRING,
RUNID TYPE STRING,
ST_OBJID TYPE STRING,
PROGNR TYPE STRING,
REGTYPE TYPE STRING,
LOA_DEREG_RSN TYPE STRING,
STUDYTYP TYPE STRING,
FULLPART TYPE STRING,
SUBJECTSEM TYPE STRING,
TGT_DEGREE TYPE STRING,
TGT_SUBJECT1 TYPE STRING,
STALA_1 TYPE STRING,
TGT_SUBJECT2 TYPE STRING,
STALA_2 TYPE STRING,
TGT_SUBJECT3 TYPE STRING,
STALA_3 TYPE STRING,
STALA_4 TYPE STRING,
STALA_5 TYPE STRING,
STALA_6 TYPE STRING,
TGT_DEG_REGIO TYPE STRING,
TGT_DEG_CNTR_CNTY TYPE STRING,
STUDY_DURATION TYPE STRING,
CS_OBJID TYPE STRING,
CG_OBJID1 TYPE STRING,
CG_OBJID2 TYPE STRING,
CG_OBJID3 TYPE STRING,
CORR_RUN_TMSTP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQDB_DE_REPREG_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_PIQDB_DE_REPREG_STR-MANDT sy-vline 
WA_PIQDB_DE_REPREG_STR-RUNID sy-vline 
WA_PIQDB_DE_REPREG_STR-ST_OBJID sy-vline 
WA_PIQDB_DE_REPREG_STR-PROGNR sy-vline 
WA_PIQDB_DE_REPREG_STR-REGTYPE sy-vline 
WA_PIQDB_DE_REPREG_STR-LOA_DEREG_RSN sy-vline 
WA_PIQDB_DE_REPREG_STR-STUDYTYP sy-vline 
WA_PIQDB_DE_REPREG_STR-FULLPART sy-vline 
WA_PIQDB_DE_REPREG_STR-SUBJECTSEM sy-vline 
WA_PIQDB_DE_REPREG_STR-TGT_DEGREE sy-vline 
WA_PIQDB_DE_REPREG_STR-TGT_SUBJECT1 sy-vline 
WA_PIQDB_DE_REPREG_STR-STALA_1 sy-vline 
WA_PIQDB_DE_REPREG_STR-TGT_SUBJECT2 sy-vline 
WA_PIQDB_DE_REPREG_STR-STALA_2 sy-vline 
WA_PIQDB_DE_REPREG_STR-TGT_SUBJECT3 sy-vline 
WA_PIQDB_DE_REPREG_STR-STALA_3 sy-vline 
WA_PIQDB_DE_REPREG_STR-STALA_4 sy-vline 
WA_PIQDB_DE_REPREG_STR-STALA_5 sy-vline 
WA_PIQDB_DE_REPREG_STR-STALA_6 sy-vline 
WA_PIQDB_DE_REPREG_STR-TGT_DEG_REGIO sy-vline 
WA_PIQDB_DE_REPREG_STR-TGT_DEG_CNTR_CNTY sy-vline 
WA_PIQDB_DE_REPREG_STR-STUDY_DURATION sy-vline 
WA_PIQDB_DE_REPREG_STR-CS_OBJID sy-vline 
WA_PIQDB_DE_REPREG_STR-CG_OBJID1 sy-vline 
WA_PIQDB_DE_REPREG_STR-CG_OBJID2 sy-vline 
WA_PIQDB_DE_REPREG_STR-CG_OBJID3 sy-vline 
WA_PIQDB_DE_REPREG_STR-CORR_RUN_TMSTP sy-vline      INTO ld_text SEPARATED BY SPACE.

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