ABAP Select data from SAP table PIQ_US_1098T_STPYMT_S 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_1098T_STPYMT_S 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_1098T_STPYMT_S. 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_1098T_STPYMT_S 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_1098T_STPYMT_S TYPE STANDARD TABLE OF PIQ_US_1098T_STPYMT_S,
      WA_PIQ_US_1098T_STPYMT_S TYPE PIQ_US_1098T_STPYMT_S,
      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_1098T_STPYMT_S> TYPE PIQ_US_1098T_STPYMT_S.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PIQ_US_1098T_STPYMT_S.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PIQ_US_1098T_STPYMT_S
  INTO TABLE IT_PIQ_US_1098T_STPYMT_S.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQ_US_1098T_STPYMT_S
*  INTO TABLE @DATA(IT_PIQ_US_1098T_STPYMT_S2).
*--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_1098T_STPYMT_S INDEX 1 INTO DATA(WA_PIQ_US_1098T_STPYMT_S2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PIQ_US_1098T_STPYMT_S ASSIGNING <PIQ_US_1098T_STPYMT_S>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQ_US_1098T_STPYMT_S>-GPART = 1.
<PIQ_US_1098T_STPYMT_S>-STUDENTNUMBER = 1.
<PIQ_US_1098T_STPYMT_S>-BUDAT = 1.
<PIQ_US_1098T_STPYMT_S>-CPUDT = 1.
<PIQ_US_1098T_STPYMT_S>-CPUTM = 1.

ENDLOOP.

LOOP AT IT_PIQ_US_1098T_STPYMT_S INTO WA_PIQ_US_1098T_STPYMT_S.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQ_US_1098T_STPYMT_S-OPBEL, sy-vline,
  WA_PIQ_US_1098T_STPYMT_S-WAERS, sy-vline,
  WA_PIQ_US_1098T_STPYMT_S-BETRW, sy-vline,
  WA_PIQ_US_1098T_STPYMT_S-BETZG, sy-vline,
  WA_PIQ_US_1098T_STPYMT_S-BUKRS, sy-vline,
  WA_PIQ_US_1098T_STPYMT_S-VALUT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQ_US_1098T_STPYMT_S 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_1098T_STPYMT_S 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_1098T_STPYMT_S INTO WA_PIQ_US_1098T_STPYMT_S.


*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 GPART
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PIQ_US_1098T_STPYMT_S-GPART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQ_US_1098T_STPYMT_S-GPART.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PIQST, internal->external for field STUDENTNUMBER
CALL FUNCTION 'CONVERSION_EXIT_PIQST_OUTPUT'
  EXPORTING
    input =                      WA_PIQ_US_1098T_STPYMT_S-STUDENTNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQ_US_1098T_STPYMT_S-STUDENTNUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field OPBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PIQ_US_1098T_STPYMT_S-OPBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQ_US_1098T_STPYMT_S-OPBEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PYORD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PIQ_US_1098T_STPYMT_S-PYORD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQ_US_1098T_STPYMT_S-PYORD.
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_PIQ_US_1098T_STPYMT_S_STR, 
GPART TYPE STRING,
STUDENTNUMBER TYPE STRING,
BUDAT TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
OPBEL TYPE STRING,
WAERS TYPE STRING,
BETRW TYPE STRING,
BETZG TYPE STRING,
BUKRS TYPE STRING,
VALUT TYPE STRING,
BLDAT TYPE STRING,
PYORD TYPE STRING,
HERKF TYPE STRING,
RZAWE TYPE STRING,
PYBUK TYPE STRING,
TEXT_RZAWE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQ_US_1098T_STPYMT_S_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_1098T_STPYMT_S_STR-GPART sy-vline 
WA_PIQ_US_1098T_STPYMT_S_STR-STUDENTNUMBER sy-vline 
WA_PIQ_US_1098T_STPYMT_S_STR-BUDAT sy-vline 
WA_PIQ_US_1098T_STPYMT_S_STR-CPUDT sy-vline 
WA_PIQ_US_1098T_STPYMT_S_STR-CPUTM sy-vline 
WA_PIQ_US_1098T_STPYMT_S_STR-OPBEL sy-vline 
WA_PIQ_US_1098T_STPYMT_S_STR-WAERS sy-vline 
WA_PIQ_US_1098T_STPYMT_S_STR-BETRW sy-vline 
WA_PIQ_US_1098T_STPYMT_S_STR-BETZG sy-vline 
WA_PIQ_US_1098T_STPYMT_S_STR-BUKRS sy-vline 
WA_PIQ_US_1098T_STPYMT_S_STR-VALUT sy-vline 
WA_PIQ_US_1098T_STPYMT_S_STR-BLDAT sy-vline 
WA_PIQ_US_1098T_STPYMT_S_STR-PYORD sy-vline 
WA_PIQ_US_1098T_STPYMT_S_STR-HERKF sy-vline 
WA_PIQ_US_1098T_STPYMT_S_STR-RZAWE sy-vline 
WA_PIQ_US_1098T_STPYMT_S_STR-PYBUK sy-vline 
WA_PIQ_US_1098T_STPYMT_S_STR-TEXT_RZAWE sy-vline      INTO ld_text SEPARATED BY SPACE.

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