ABAP Select data from SAP table H99CWTR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP H99CWTR 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 H99CWTR. 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 H99CWTR 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_H99CWTR TYPE STANDARD TABLE OF H99CWTR,
      WA_H99CWTR TYPE H99CWTR,
      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: <H99CWTR> TYPE H99CWTR.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_H99CWTR.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM H99CWTR
  INTO TABLE IT_H99CWTR.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM H99CWTR
*  INTO TABLE @DATA(IT_H99CWTR2).
*--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_H99CWTR INDEX 1 INTO DATA(WA_H99CWTR2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_H99CWTR ASSIGNING <H99CWTR>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<H99CWTR>-INPERVIEW = 1.
<H99CWTR>-FORPERVIEW = 1.
<H99CWTR>-ALVLIST = 1.
<H99CWTR>-XXLLIST = 1.
<H99CWTR>-XXLPCFILE = 1.

ENDLOOP.

LOOP AT IT_H99CWTR INTO WA_H99CWTR.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_H99CWTR-GRIDLIST, sy-vline,
  WA_H99CWTR-PAYTY_CAL, sy-vline,
  WA_H99CWTR-PAYID_CAL, sy-vline,
  WA_H99CWTR-INPTY_CAL, sy-vline,
  WA_H99CWTR-INPID_CAL, sy-vline,
  WA_H99CWTR-FPPER_REF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_H99CWTR 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_H99CWTR 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_H99CWTR INTO WA_H99CWTR.


*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_H99CWTR_STR, 
INPERVIEW TYPE STRING,
FORPERVIEW TYPE STRING,
ALVLIST TYPE STRING,
XXLLIST TYPE STRING,
XXLPCFILE TYPE STRING,
GRIDLIST TYPE STRING,
PAYTY_CAL TYPE STRING,
PAYID_CAL TYPE STRING,
INPTY_CAL TYPE STRING,
INPID_CAL TYPE STRING,
FPPER_REF TYPE STRING,
PAYDT_REF TYPE STRING,
INPER_REF TYPE STRING,
IPEND_REF TYPE STRING,
PAYTY_REF TYPE STRING,
PAYID_REF TYPE STRING,
INPTY_REF TYPE STRING,
INPID_REF TYPE STRING,
ANZHL_REF TYPE STRING,
BETRG_REF TYPE STRING,
WAERS_REF TYPE STRING,
ANZHL_ABSDIFF TYPE STRING,
BETRG_ABSDIFF TYPE STRING,
ANZHL_RELDIFF TYPE STRING,
BETRG_RELDIFF TYPE STRING,
ARCH_READ TYPE STRING,
COMPPER TYPE STRING,
NOOC TYPE STRING,
YESOC TYPE STRING,
ABKRS_REF TYPE STRING,
IABKRS_REF TYPE STRING,
ABKRS_CAL TYPE STRING,
IABKRS_CAL TYPE STRING,
SHOWNULLRECORDS TYPE STRING,
FETCHDECLUSTEREDRECORDS TYPE STRING,
SHOWWPBPSPLITS TYPE STRING,
APZNR TYPE STRING,
GENDERTEXT TYPE STRING,
ADDRESSTYPE TYPE STRING,
STATETEXT TYPE STRING,
COUNTRYTEXT TYPE STRING,
SACHP_TXT TYPE STRING,
SACHA_TXT TYPE STRING,
SACHZ_TXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_H99CWTR_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_H99CWTR_STR-INPERVIEW sy-vline 
WA_H99CWTR_STR-FORPERVIEW sy-vline 
WA_H99CWTR_STR-ALVLIST sy-vline 
WA_H99CWTR_STR-XXLLIST sy-vline 
WA_H99CWTR_STR-XXLPCFILE sy-vline 
WA_H99CWTR_STR-GRIDLIST sy-vline 
WA_H99CWTR_STR-PAYTY_CAL sy-vline 
WA_H99CWTR_STR-PAYID_CAL sy-vline 
WA_H99CWTR_STR-INPTY_CAL sy-vline 
WA_H99CWTR_STR-INPID_CAL sy-vline 
WA_H99CWTR_STR-FPPER_REF sy-vline 
WA_H99CWTR_STR-PAYDT_REF sy-vline 
WA_H99CWTR_STR-INPER_REF sy-vline 
WA_H99CWTR_STR-IPEND_REF sy-vline 
WA_H99CWTR_STR-PAYTY_REF sy-vline 
WA_H99CWTR_STR-PAYID_REF sy-vline 
WA_H99CWTR_STR-INPTY_REF sy-vline 
WA_H99CWTR_STR-INPID_REF sy-vline 
WA_H99CWTR_STR-ANZHL_REF sy-vline 
WA_H99CWTR_STR-BETRG_REF sy-vline 
WA_H99CWTR_STR-WAERS_REF sy-vline 
WA_H99CWTR_STR-ANZHL_ABSDIFF sy-vline 
WA_H99CWTR_STR-BETRG_ABSDIFF sy-vline 
WA_H99CWTR_STR-ANZHL_RELDIFF sy-vline 
WA_H99CWTR_STR-BETRG_RELDIFF sy-vline 
WA_H99CWTR_STR-ARCH_READ sy-vline 
WA_H99CWTR_STR-COMPPER sy-vline 
WA_H99CWTR_STR-NOOC sy-vline 
WA_H99CWTR_STR-YESOC sy-vline 
WA_H99CWTR_STR-ABKRS_REF sy-vline 
WA_H99CWTR_STR-IABKRS_REF sy-vline 
WA_H99CWTR_STR-ABKRS_CAL sy-vline 
WA_H99CWTR_STR-IABKRS_CAL sy-vline 
WA_H99CWTR_STR-SHOWNULLRECORDS sy-vline 
WA_H99CWTR_STR-FETCHDECLUSTEREDRECORDS sy-vline 
WA_H99CWTR_STR-SHOWWPBPSPLITS sy-vline 
WA_H99CWTR_STR-APZNR sy-vline 
WA_H99CWTR_STR-GENDERTEXT sy-vline 
WA_H99CWTR_STR-ADDRESSTYPE sy-vline 
WA_H99CWTR_STR-STATETEXT sy-vline 
WA_H99CWTR_STR-COUNTRYTEXT sy-vline 
WA_H99CWTR_STR-SACHP_TXT sy-vline 
WA_H99CWTR_STR-SACHA_TXT sy-vline 
WA_H99CWTR_STR-SACHZ_TXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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