ABAP Select data from SAP table PYC_S_PI_ALH_CSV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PYC_S_PI_ALH_CSV
*  INTO TABLE @DATA(IT_PYC_S_PI_ALH_CSV2).
*--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_PYC_S_PI_ALH_CSV INDEX 1 INTO DATA(WA_PYC_S_PI_ALH_CSV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PYC_S_PI_ALH_CSV>-PYPI_ID = 1.
<PYC_S_PI_ALH_CSV>-POLICY_ID = 1.
<PYC_S_PI_ALH_CSV>-CHECK_INST_ID = 1.
<PYC_S_PI_ALH_CSV>-CHECK_ID = 1.
<PYC_S_PI_ALH_CSV>-ROID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PYC_S_PI_ALH_CSV-TSL_CHAR, sy-vline,
  WA_PYC_S_PI_ALH_CSV-DATE_TIME_UTC, sy-vline,
  WA_PYC_S_PI_ALH_CSV-DATE_TIME_USER, sy-vline,
  WA_PYC_S_PI_ALH_CSV-USER_TZONE, sy-vline,
  WA_PYC_S_PI_ALH_CSV-PYPI_NAME, sy-vline,
  WA_PYC_S_PI_ALH_CSV-CHECK_INST_NAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PYC_S_PI_ALH_CSV 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_PYC_S_PI_ALH_CSV 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_PYC_S_PI_ALH_CSV INTO WA_PYC_S_PI_ALH_CSV.


*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 CKINP, internal->external for field POLICY_ID
CALL FUNCTION 'CONVERSION_EXIT_CKINP_OUTPUT'
  EXPORTING
    input =                      WA_PYC_S_PI_ALH_CSV-POLICY_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PYC_S_PI_ALH_CSV-POLICY_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CKINP, internal->external for field CHECK_INST_ID
CALL FUNCTION 'CONVERSION_EXIT_CKINP_OUTPUT'
  EXPORTING
    input =                      WA_PYC_S_PI_ALH_CSV-CHECK_INST_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PYC_S_PI_ALH_CSV-CHECK_INST_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CKINP, internal->external for field CHECK_ID
CALL FUNCTION 'CONVERSION_EXIT_CKINP_OUTPUT'
  EXPORTING
    input =                      WA_PYC_S_PI_ALH_CSV-CHECK_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PYC_S_PI_ALH_CSV-CHECK_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_PYC_S_PI_ALH_CSV_STR, 
PYPI_ID TYPE STRING,
POLICY_ID TYPE STRING,
CHECK_INST_ID TYPE STRING,
CHECK_ID TYPE STRING,
ROID TYPE STRING,
TSL_CHAR TYPE STRING,
DATE_TIME_UTC TYPE STRING,
DATE_TIME_USER TYPE STRING,
USER_TZONE TYPE STRING,
PYPI_NAME TYPE STRING,
CHECK_INST_NAME TYPE STRING,
POLICY_NAME TYPE STRING,
CHECK_NAME TYPE STRING,
RO_NAME TYPE STRING,
UNAME TYPE STRING,
USER_NAME TYPE STRING,
ACTION TYPE STRING,
ACTION_TEXT TYPE STRING,
MESSAGE_TEXT TYPE STRING,
FREE_TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PYC_S_PI_ALH_CSV_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_PYC_S_PI_ALH_CSV_STR-PYPI_ID sy-vline 
WA_PYC_S_PI_ALH_CSV_STR-POLICY_ID sy-vline 
WA_PYC_S_PI_ALH_CSV_STR-CHECK_INST_ID sy-vline 
WA_PYC_S_PI_ALH_CSV_STR-CHECK_ID sy-vline 
WA_PYC_S_PI_ALH_CSV_STR-ROID sy-vline 
WA_PYC_S_PI_ALH_CSV_STR-TSL_CHAR sy-vline 
WA_PYC_S_PI_ALH_CSV_STR-DATE_TIME_UTC sy-vline 
WA_PYC_S_PI_ALH_CSV_STR-DATE_TIME_USER sy-vline 
WA_PYC_S_PI_ALH_CSV_STR-USER_TZONE sy-vline 
WA_PYC_S_PI_ALH_CSV_STR-PYPI_NAME sy-vline 
WA_PYC_S_PI_ALH_CSV_STR-CHECK_INST_NAME sy-vline 
WA_PYC_S_PI_ALH_CSV_STR-POLICY_NAME sy-vline 
WA_PYC_S_PI_ALH_CSV_STR-CHECK_NAME sy-vline 
WA_PYC_S_PI_ALH_CSV_STR-RO_NAME sy-vline 
WA_PYC_S_PI_ALH_CSV_STR-UNAME sy-vline 
WA_PYC_S_PI_ALH_CSV_STR-USER_NAME sy-vline 
WA_PYC_S_PI_ALH_CSV_STR-ACTION sy-vline 
WA_PYC_S_PI_ALH_CSV_STR-ACTION_TEXT sy-vline 
WA_PYC_S_PI_ALH_CSV_STR-MESSAGE_TEXT sy-vline 
WA_PYC_S_PI_ALH_CSV_STR-FREE_TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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