ABAP Select data from SAP table PIQ_US_ACT_REC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQ_US_ACT_REC
*  INTO TABLE @DATA(IT_PIQ_US_ACT_REC2).
*--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_PIQ_US_ACT_REC INDEX 1 INTO DATA(WA_PIQ_US_ACT_REC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQ_US_ACT_REC>-RPT_YEAR = 1.
<PIQ_US_ACT_REC>-LASTNAME = 1.
<PIQ_US_ACT_REC>-FIRSTNAME = 1.
<PIQ_US_ACT_REC>-ACTMI = 1.
<PIQ_US_ACT_REC>-STRT_ADR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQ_US_ACT_REC-BLANK1, sy-vline,
  WA_PIQ_US_ACT_REC-GENDER_NUM, sy-vline,
  WA_PIQ_US_ACT_REC-GENDER_ALP, sy-vline,
  WA_PIQ_US_ACT_REC-GRADE_LVL, sy-vline,
  WA_PIQ_US_ACT_REC-ACTSSN, sy-vline,
  WA_PIQ_US_ACT_REC-BLANK2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQ_US_ACT_REC 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_PIQ_US_ACT_REC 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_PIQ_US_ACT_REC INTO WA_PIQ_US_ACT_REC.


*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_PIQ_US_ACT_REC_STR, 
RPT_YEAR TYPE STRING,
LASTNAME TYPE STRING,
FIRSTNAME TYPE STRING,
ACTMI TYPE STRING,
STRT_ADR TYPE STRING,
BLANK1 TYPE STRING,
GENDER_NUM TYPE STRING,
GENDER_ALP TYPE STRING,
GRADE_LVL TYPE STRING,
ACTSSN TYPE STRING,
BLANK2 TYPE STRING,
DOBMONTH TYPE STRING,
DOBDAY TYPE STRING,
DOBYEAR TYPE STRING,
AREACODE TYPE STRING,
PHONE_NO TYPE STRING,
CITY TYPE STRING,
STATE TYPE STRING,
ZIPPLUS4 TYPE STRING,
EXP_DOB TYPE STRING,
BLANK3 TYPE STRING,
EXP_TDATE TYPE STRING,
TESTDATE TYPE STRING,
ESTSCORINT TYPE STRING,
TESTTYPE TYPE STRING,
BLANK4 TYPE STRING,
COR_RPT TYPE STRING,
ACT_ENG TYPE STRING,
ACT_MATH TYPE STRING,
ACT_READ TYPE STRING,
ACT_SCI TYPE STRING,
ACT_WRI TYPE STRING,
BLANK5 TYPE STRING,
ACTSUM TYPE STRING,
BLANK6 TYPE STRING,
LOCALNRM TYPE STRING,
ACTPERENG TYPE STRING,
ACTPERMATH TYPE STRING,
ACTPERREAD TYPE STRING,
ACTPERSCI TYPE STRING,
ACTPERWRI TYPE STRING,
BLANK7 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQ_US_ACT_REC_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_PIQ_US_ACT_REC_STR-RPT_YEAR sy-vline 
WA_PIQ_US_ACT_REC_STR-LASTNAME sy-vline 
WA_PIQ_US_ACT_REC_STR-FIRSTNAME sy-vline 
WA_PIQ_US_ACT_REC_STR-ACTMI sy-vline 
WA_PIQ_US_ACT_REC_STR-STRT_ADR sy-vline 
WA_PIQ_US_ACT_REC_STR-BLANK1 sy-vline 
WA_PIQ_US_ACT_REC_STR-GENDER_NUM sy-vline 
WA_PIQ_US_ACT_REC_STR-GENDER_ALP sy-vline 
WA_PIQ_US_ACT_REC_STR-GRADE_LVL sy-vline 
WA_PIQ_US_ACT_REC_STR-ACTSSN sy-vline 
WA_PIQ_US_ACT_REC_STR-BLANK2 sy-vline 
WA_PIQ_US_ACT_REC_STR-DOBMONTH sy-vline 
WA_PIQ_US_ACT_REC_STR-DOBDAY sy-vline 
WA_PIQ_US_ACT_REC_STR-DOBYEAR sy-vline 
WA_PIQ_US_ACT_REC_STR-AREACODE sy-vline 
WA_PIQ_US_ACT_REC_STR-PHONE_NO sy-vline 
WA_PIQ_US_ACT_REC_STR-CITY sy-vline 
WA_PIQ_US_ACT_REC_STR-STATE sy-vline 
WA_PIQ_US_ACT_REC_STR-ZIPPLUS4 sy-vline 
WA_PIQ_US_ACT_REC_STR-EXP_DOB sy-vline 
WA_PIQ_US_ACT_REC_STR-BLANK3 sy-vline 
WA_PIQ_US_ACT_REC_STR-EXP_TDATE sy-vline 
WA_PIQ_US_ACT_REC_STR-TESTDATE sy-vline 
WA_PIQ_US_ACT_REC_STR-ESTSCORINT sy-vline 
WA_PIQ_US_ACT_REC_STR-TESTTYPE sy-vline 
WA_PIQ_US_ACT_REC_STR-BLANK4 sy-vline 
WA_PIQ_US_ACT_REC_STR-COR_RPT sy-vline 
WA_PIQ_US_ACT_REC_STR-ACT_ENG sy-vline 
WA_PIQ_US_ACT_REC_STR-ACT_MATH sy-vline 
WA_PIQ_US_ACT_REC_STR-ACT_READ sy-vline 
WA_PIQ_US_ACT_REC_STR-ACT_SCI sy-vline 
WA_PIQ_US_ACT_REC_STR-ACT_WRI sy-vline 
WA_PIQ_US_ACT_REC_STR-BLANK5 sy-vline 
WA_PIQ_US_ACT_REC_STR-ACTSUM sy-vline 
WA_PIQ_US_ACT_REC_STR-BLANK6 sy-vline 
WA_PIQ_US_ACT_REC_STR-LOCALNRM sy-vline 
WA_PIQ_US_ACT_REC_STR-ACTPERENG sy-vline 
WA_PIQ_US_ACT_REC_STR-ACTPERMATH sy-vline 
WA_PIQ_US_ACT_REC_STR-ACTPERREAD sy-vline 
WA_PIQ_US_ACT_REC_STR-ACTPERSCI sy-vline 
WA_PIQ_US_ACT_REC_STR-ACTPERWRI sy-vline 
WA_PIQ_US_ACT_REC_STR-BLANK7 sy-vline      INTO ld_text SEPARATED BY SPACE.

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