ABAP Select data from SAP table PIQAPP_DECISION into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQAPP_DECISION
*  INTO TABLE @DATA(IT_PIQAPP_DECISION2).
*--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_PIQAPP_DECISION INDEX 1 INTO DATA(WA_PIQAPP_DECISION2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQAPP_DECISION>-PROCEDURE_ID = 1.
<PIQAPP_DECISION>-PREDECESSOR_ID = 1.
<PIQAPP_DECISION>-DECISION_ID = 1.
<PIQAPP_DECISION>-PERYR = 1.
<PIQAPP_DECISION>-PERID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQAPP_DECISION-CATEGORY, sy-vline,
  WA_PIQAPP_DECISION-SUB_CATEGORY, sy-vline,
  WA_PIQAPP_DECISION-PROGRAM_OBJID_SOURCE, sy-vline,
  WA_PIQAPP_DECISION-SECOND_STUDY, sy-vline,
  WA_PIQAPP_DECISION-HARDSHIP, sy-vline,
  WA_PIQAPP_DECISION-PRIVILEGED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQAPP_DECISION 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_PIQAPP_DECISION 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_PIQAPP_DECISION INTO WA_PIQAPP_DECISION.


*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.

*Conversion exit ALPHA, internal->external for field PROCEDURE_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PIQAPP_DECISION-PROCEDURE_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQAPP_DECISION-PROCEDURE_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PREDECESSOR_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PIQAPP_DECISION-PREDECESSOR_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQAPP_DECISION-PREDECESSOR_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DECISION_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PIQAPP_DECISION-DECISION_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQAPP_DECISION-DECISION_ID.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_PIQAPP_DECISION_STR, 
PROCEDURE_ID TYPE STRING,
PREDECESSOR_ID TYPE STRING,
DECISION_ID TYPE STRING,
PERYR TYPE STRING,
PERID TYPE STRING,
CATEGORY TYPE STRING,
SUB_CATEGORY TYPE STRING,
PROGRAM_OBJID_SOURCE TYPE STRING,
SECOND_STUDY TYPE STRING,
HARDSHIP TYPE STRING,
PRIVILEGED TYPE STRING,
HARDSHIP_CATEGORY TYPE STRING,
BETTER_GRADE TYPE STRING,
WAIT_TIME_IMPROVEMENT TYPE STRING,
PREPARATION_COURSE TYPE STRING,
RELEVANT_INTERNSHIP TYPE STRING,
SUBJECT_NUMBER TYPE STRING,
SEMESTERTICKET TYPE STRING,
REQUEST_REASON TYPE STRING,
HROBJID TYPE STRING,
DATE1 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQAPP_DECISION_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_PIQAPP_DECISION_STR-PROCEDURE_ID sy-vline 
WA_PIQAPP_DECISION_STR-PREDECESSOR_ID sy-vline 
WA_PIQAPP_DECISION_STR-DECISION_ID sy-vline 
WA_PIQAPP_DECISION_STR-PERYR sy-vline 
WA_PIQAPP_DECISION_STR-PERID sy-vline 
WA_PIQAPP_DECISION_STR-CATEGORY sy-vline 
WA_PIQAPP_DECISION_STR-SUB_CATEGORY sy-vline 
WA_PIQAPP_DECISION_STR-PROGRAM_OBJID_SOURCE sy-vline 
WA_PIQAPP_DECISION_STR-SECOND_STUDY sy-vline 
WA_PIQAPP_DECISION_STR-HARDSHIP sy-vline 
WA_PIQAPP_DECISION_STR-PRIVILEGED sy-vline 
WA_PIQAPP_DECISION_STR-HARDSHIP_CATEGORY sy-vline 
WA_PIQAPP_DECISION_STR-BETTER_GRADE sy-vline 
WA_PIQAPP_DECISION_STR-WAIT_TIME_IMPROVEMENT sy-vline 
WA_PIQAPP_DECISION_STR-PREPARATION_COURSE sy-vline 
WA_PIQAPP_DECISION_STR-RELEVANT_INTERNSHIP sy-vline 
WA_PIQAPP_DECISION_STR-SUBJECT_NUMBER sy-vline 
WA_PIQAPP_DECISION_STR-SEMESTERTICKET sy-vline 
WA_PIQAPP_DECISION_STR-REQUEST_REASON sy-vline 
WA_PIQAPP_DECISION_STR-HROBJID sy-vline 
WA_PIQAPP_DECISION_STR-DATE1 sy-vline      INTO ld_text SEPARATED BY SPACE.

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