ABAP Select data from SAP table PSAP_HSAPSAS0_ALV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PSAP_HSAPSAS0_ALV 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 PSAP_HSAPSAS0_ALV. 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 PSAP_HSAPSAS0_ALV 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_PSAP_HSAPSAS0_ALV TYPE STANDARD TABLE OF PSAP_HSAPSAS0_ALV,
      WA_PSAP_HSAPSAS0_ALV TYPE PSAP_HSAPSAS0_ALV,
      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: <PSAP_HSAPSAS0_ALV> TYPE PSAP_HSAPSAS0_ALV.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PSAP_HSAPSAS0_ALV.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PSAP_HSAPSAS0_ALV
  INTO TABLE IT_PSAP_HSAPSAS0_ALV.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PSAP_HSAPSAS0_ALV
*  INTO TABLE @DATA(IT_PSAP_HSAPSAS0_ALV2).
*--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_PSAP_HSAPSAS0_ALV INDEX 1 INTO DATA(WA_PSAP_HSAPSAS0_ALV2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PSAP_HSAPSAS0_ALV ASSIGNING <PSAP_HSAPSAS0_ALV>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PSAP_HSAPSAS0_ALV>-PERNR = 1.
<PSAP_HSAPSAS0_ALV>-FNAME = 1.
<PSAP_HSAPSAS0_ALV>-GRADE = 1.
<PSAP_HSAPSAS0_ALV>-JOBGT = 1.
<PSAP_HSAPSAS0_ALV>-JOBID = 1.

ENDLOOP.

LOOP AT IT_PSAP_HSAPSAS0_ALV INTO WA_PSAP_HSAPSAS0_ALV.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PSAP_HSAPSAS0_ALV-BUKRS, sy-vline,
  WA_PSAP_HSAPSAS0_ALV-BUTXT, sy-vline,
  WA_PSAP_HSAPSAS0_ALV-WFLAG, sy-vline,
  WA_PSAP_HSAPSAS0_ALV-WATTP, sy-vline,
  WA_PSAP_HSAPSAS0_ALV-LGART, sy-vline,
  WA_PSAP_HSAPSAS0_ALV-MAXBT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PSAP_HSAPSAS0_ALV 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_PSAP_HSAPSAS0_ALV 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_PSAP_HSAPSAS0_ALV INTO WA_PSAP_HSAPSAS0_ALV.


*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_PSAP_HSAPSAS0_ALV_STR, 
PERNR TYPE STRING,
FNAME TYPE STRING,
GRADE TYPE STRING,
JOBGT TYPE STRING,
JOBID TYPE STRING,
BUKRS TYPE STRING,
BUTXT TYPE STRING,
WFLAG TYPE STRING,
WATTP TYPE STRING,
LGART TYPE STRING,
MAXBT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PSAP_HSAPSAS0_ALV_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_PSAP_HSAPSAS0_ALV_STR-PERNR sy-vline 
WA_PSAP_HSAPSAS0_ALV_STR-FNAME sy-vline 
WA_PSAP_HSAPSAS0_ALV_STR-GRADE sy-vline 
WA_PSAP_HSAPSAS0_ALV_STR-JOBGT sy-vline 
WA_PSAP_HSAPSAS0_ALV_STR-JOBID sy-vline 
WA_PSAP_HSAPSAS0_ALV_STR-BUKRS sy-vline 
WA_PSAP_HSAPSAS0_ALV_STR-BUTXT sy-vline 
WA_PSAP_HSAPSAS0_ALV_STR-WFLAG sy-vline 
WA_PSAP_HSAPSAS0_ALV_STR-WATTP sy-vline 
WA_PSAP_HSAPSAS0_ALV_STR-LGART sy-vline 
WA_PSAP_HSAPSAS0_ALV_STR-MAXBT sy-vline      INTO ld_text SEPARATED BY SPACE.

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