ABAP Select data from SAP table HRPAYCA_S_T4AN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HRPAYCA_S_T4AN 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 HRPAYCA_S_T4AN. 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 HRPAYCA_S_T4AN 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_HRPAYCA_S_T4AN TYPE STANDARD TABLE OF HRPAYCA_S_T4AN,
      WA_HRPAYCA_S_T4AN TYPE HRPAYCA_S_T4AN,
      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: <HRPAYCA_S_T4AN> TYPE HRPAYCA_S_T4AN.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_HRPAYCA_S_T4AN.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM HRPAYCA_S_T4AN
  INTO TABLE IT_HRPAYCA_S_T4AN.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRPAYCA_S_T4AN
*  INTO TABLE @DATA(IT_HRPAYCA_S_T4AN2).
*--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_HRPAYCA_S_T4AN INDEX 1 INTO DATA(WA_HRPAYCA_S_T4AN2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_HRPAYCA_S_T4AN ASSIGNING <HRPAYCA_S_T4AN>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRPAYCA_S_T4AN>-X_TAX_YEAR = 1.
<HRPAYCA_S_T4AN>-X_AMEND = 1.
<HRPAYCA_S_T4AN>-X_EMPLR_BUTXT = 1.
<HRPAYCA_S_T4AN>-X_BUSNM = 1.
<HRPAYCA_S_T4AN>-X_PERID = 1.

ENDLOOP.

LOOP AT IT_HRPAYCA_S_T4AN INTO WA_HRPAYCA_S_T4AN.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRPAYCA_S_T4AN-X_BOX18, sy-vline,
  WA_HRPAYCA_S_T4AN-X_BOX20, sy-vline,
  WA_HRPAYCA_S_T4AN-X_BOX22, sy-vline,
  WA_HRPAYCA_S_T4AN-X_REDUA, sy-vline,
  WA_HRPAYCA_S_T4AN-X_RPCDE, sy-vline,
  WA_HRPAYCA_S_T4AN-X_SCITY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRPAYCA_S_T4AN 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_HRPAYCA_S_T4AN 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_HRPAYCA_S_T4AN INTO WA_HRPAYCA_S_T4AN.


*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 GJAHR, internal->external for field X_TAX_YEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_HRPAYCA_S_T4AN-X_TAX_YEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HRPAYCA_S_T4AN-X_TAX_YEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field Y_TAX_YEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_HRPAYCA_S_T4AN-Y_TAX_YEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HRPAYCA_S_T4AN-Y_TAX_YEAR.
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_HRPAYCA_S_T4AN_STR, 
X_TAX_YEAR TYPE STRING,
X_AMEND TYPE STRING,
X_EMPLR_BUTXT TYPE STRING,
X_BUSNM TYPE STRING,
X_PERID TYPE STRING,
X_BOX18 TYPE STRING,
X_BOX20 TYPE STRING,
X_BOX22 TYPE STRING,
X_REDUA TYPE STRING,
X_RPCDE TYPE STRING,
X_SCITY TYPE STRING,
X_SPROV TYPE STRING,
X_CDAYS TYPE STRING,
X_CRESIDE TYPE STRING,
X_NRICC TYPE STRING,
X_PNAME TYPE STRING,
X_NACHN TYPE STRING,
X_VORNA TYPE STRING,
X_INITS TYPE STRING,
X_CAREOF TYPE STRING,
X_STRAS TYPE STRING,
X_LOCAT TYPE STRING,
X_ORT01 TYPE STRING,
X_STATE TYPE STRING,
X_PSTLZ TYPE STRING,
X_LAND1 TYPE STRING,
X_FSSN TYPE STRING,
Y_TAX_YEAR TYPE STRING,
Y_AMEND TYPE STRING,
Y_EMPLR_BUTXT TYPE STRING,
Y_BUSNM TYPE STRING,
Y_PERID TYPE STRING,
Y_BOX18 TYPE STRING,
Y_BOX20 TYPE STRING,
Y_BOX22 TYPE STRING,
Y_REDUA TYPE STRING,
Y_RPCDE TYPE STRING,
Y_SCITY TYPE STRING,
Y_SPROV TYPE STRING,
Y_CDAYS TYPE STRING,
Y_CRESIDE TYPE STRING,
Y_NRICC TYPE STRING,
Y_PNAME TYPE STRING,
Y_NACHN TYPE STRING,
Y_VORNA TYPE STRING,
Y_INITS TYPE STRING,
Y_CAREOF TYPE STRING,
Y_STRAS TYPE STRING,
Y_LOCAT TYPE STRING,
Y_ORT01 TYPE STRING,
Y_STATE TYPE STRING,
Y_PSTLZ TYPE STRING,
Y_LAND1 TYPE STRING,
Y_FSSN TYPE STRING,
PRINT_INSTRUCTIONS TYPE STRING,
X_CUSTOM TYPE STRING,
Y_CUSTOM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRPAYCA_S_T4AN_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_HRPAYCA_S_T4AN_STR-X_TAX_YEAR sy-vline 
WA_HRPAYCA_S_T4AN_STR-X_AMEND sy-vline 
WA_HRPAYCA_S_T4AN_STR-X_EMPLR_BUTXT sy-vline 
WA_HRPAYCA_S_T4AN_STR-X_BUSNM sy-vline 
WA_HRPAYCA_S_T4AN_STR-X_PERID sy-vline 
WA_HRPAYCA_S_T4AN_STR-X_BOX18 sy-vline 
WA_HRPAYCA_S_T4AN_STR-X_BOX20 sy-vline 
WA_HRPAYCA_S_T4AN_STR-X_BOX22 sy-vline 
WA_HRPAYCA_S_T4AN_STR-X_REDUA sy-vline 
WA_HRPAYCA_S_T4AN_STR-X_RPCDE sy-vline 
WA_HRPAYCA_S_T4AN_STR-X_SCITY sy-vline 
WA_HRPAYCA_S_T4AN_STR-X_SPROV sy-vline 
WA_HRPAYCA_S_T4AN_STR-X_CDAYS sy-vline 
WA_HRPAYCA_S_T4AN_STR-X_CRESIDE sy-vline 
WA_HRPAYCA_S_T4AN_STR-X_NRICC sy-vline 
WA_HRPAYCA_S_T4AN_STR-X_PNAME sy-vline 
WA_HRPAYCA_S_T4AN_STR-X_NACHN sy-vline 
WA_HRPAYCA_S_T4AN_STR-X_VORNA sy-vline 
WA_HRPAYCA_S_T4AN_STR-X_INITS sy-vline 
WA_HRPAYCA_S_T4AN_STR-X_CAREOF sy-vline 
WA_HRPAYCA_S_T4AN_STR-X_STRAS sy-vline 
WA_HRPAYCA_S_T4AN_STR-X_LOCAT sy-vline 
WA_HRPAYCA_S_T4AN_STR-X_ORT01 sy-vline 
WA_HRPAYCA_S_T4AN_STR-X_STATE sy-vline 
WA_HRPAYCA_S_T4AN_STR-X_PSTLZ sy-vline 
WA_HRPAYCA_S_T4AN_STR-X_LAND1 sy-vline 
WA_HRPAYCA_S_T4AN_STR-X_FSSN sy-vline 
WA_HRPAYCA_S_T4AN_STR-Y_TAX_YEAR sy-vline 
WA_HRPAYCA_S_T4AN_STR-Y_AMEND sy-vline 
WA_HRPAYCA_S_T4AN_STR-Y_EMPLR_BUTXT sy-vline 
WA_HRPAYCA_S_T4AN_STR-Y_BUSNM sy-vline 
WA_HRPAYCA_S_T4AN_STR-Y_PERID sy-vline 
WA_HRPAYCA_S_T4AN_STR-Y_BOX18 sy-vline 
WA_HRPAYCA_S_T4AN_STR-Y_BOX20 sy-vline 
WA_HRPAYCA_S_T4AN_STR-Y_BOX22 sy-vline 
WA_HRPAYCA_S_T4AN_STR-Y_REDUA sy-vline 
WA_HRPAYCA_S_T4AN_STR-Y_RPCDE sy-vline 
WA_HRPAYCA_S_T4AN_STR-Y_SCITY sy-vline 
WA_HRPAYCA_S_T4AN_STR-Y_SPROV sy-vline 
WA_HRPAYCA_S_T4AN_STR-Y_CDAYS sy-vline 
WA_HRPAYCA_S_T4AN_STR-Y_CRESIDE sy-vline 
WA_HRPAYCA_S_T4AN_STR-Y_NRICC sy-vline 
WA_HRPAYCA_S_T4AN_STR-Y_PNAME sy-vline 
WA_HRPAYCA_S_T4AN_STR-Y_NACHN sy-vline 
WA_HRPAYCA_S_T4AN_STR-Y_VORNA sy-vline 
WA_HRPAYCA_S_T4AN_STR-Y_INITS sy-vline 
WA_HRPAYCA_S_T4AN_STR-Y_CAREOF sy-vline 
WA_HRPAYCA_S_T4AN_STR-Y_STRAS sy-vline 
WA_HRPAYCA_S_T4AN_STR-Y_LOCAT sy-vline 
WA_HRPAYCA_S_T4AN_STR-Y_ORT01 sy-vline 
WA_HRPAYCA_S_T4AN_STR-Y_STATE sy-vline 
WA_HRPAYCA_S_T4AN_STR-Y_PSTLZ sy-vline 
WA_HRPAYCA_S_T4AN_STR-Y_LAND1 sy-vline 
WA_HRPAYCA_S_T4AN_STR-Y_FSSN sy-vline 
WA_HRPAYCA_S_T4AN_STR-PRINT_INSTRUCTIONS sy-vline 
WA_HRPAYCA_S_T4AN_STR-X_CUSTOM sy-vline 
WA_HRPAYCA_S_T4AN_STR-Y_CUSTOM sy-vline      INTO ld_text SEPARATED BY SPACE.

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