ABAP Select data from SAP table WINT_WAM1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WINT_WAM1 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 WINT_WAM1. 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 WINT_WAM1 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_WINT_WAM1 TYPE STANDARD TABLE OF WINT_WAM1,
      WA_WINT_WAM1 TYPE WINT_WAM1,
      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: <WINT_WAM1> TYPE WINT_WAM1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_WINT_WAM1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM WINT_WAM1
  INTO TABLE IT_WINT_WAM1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WINT_WAM1
*  INTO TABLE @DATA(IT_WINT_WAM12).
*--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_WINT_WAM1 INDEX 1 INTO DATA(WA_WINT_WAM12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_WINT_WAM1 ASSIGNING <WINT_WAM1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WINT_WAM1>-MATNR = 1.
<WINT_WAM1>-LVORM = 1.
<WINT_WAM1>-MTART = 1.
<WINT_WAM1>-MBRSH = 1.
<WINT_WAM1>-MATKL = 1.

ENDLOOP.

LOOP AT IT_WINT_WAM1 INTO WA_WINT_WAM1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WINT_WAM1-BWVOR, sy-vline,
  WA_WINT_WAM1-BWSCL, sy-vline,
  WA_WINT_WAM1-SAISO, sy-vline,
  WA_WINT_WAM1-DATAB, sy-vline,
  WA_WINT_WAM1-LIQDT, sy-vline,
  WA_WINT_WAM1-SATNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WINT_WAM1 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_WINT_WAM1 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_WINT_WAM1 INTO WA_WINT_WAM1.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WINT_WAM1-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WINT_WAM1-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field SATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WINT_WAM1-SATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WINT_WAM1-SATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WINT_WAM1-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WINT_WAM1-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BSTME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WINT_WAM1-BSTME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WINT_WAM1-BSTME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR1
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WINT_WAM1-MATNR1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WINT_WAM1-MATNR1.
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_WINT_WAM1_STR, 
MATNR TYPE STRING,
LVORM TYPE STRING,
MTART TYPE STRING,
MBRSH TYPE STRING,
MATKL TYPE STRING,
BWVOR TYPE STRING,
BWSCL TYPE STRING,
SAISO TYPE STRING,
DATAB TYPE STRING,
LIQDT TYPE STRING,
SATNR TYPE STRING,
ATTYP TYPE STRING,
MEINS TYPE STRING,
BSTME TYPE STRING,
MLGUT TYPE STRING,
MATNR1 TYPE STRING,
SSTUF TYPE STRING,
PFLKS TYPE STRING,
LSTFL TYPE STRING,
LSTVZ TYPE STRING,
LSTAK TYPE STRING,
MAKTX TYPE STRING,
STRLI TYPE STRING,
BWSCL_OLD TYPE STRING,
CLASS_CHNG TYPE STRING,
VARIA_NEW TYPE STRING,
Q_BWSCL TYPE STRING,
Q_CLASS TYPE STRING,
Q_LTIME TYPE STRING,
Q_LAYOUT TYPE STRING,
Q_SEPARAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WINT_WAM1_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_WINT_WAM1_STR-MATNR sy-vline 
WA_WINT_WAM1_STR-LVORM sy-vline 
WA_WINT_WAM1_STR-MTART sy-vline 
WA_WINT_WAM1_STR-MBRSH sy-vline 
WA_WINT_WAM1_STR-MATKL sy-vline 
WA_WINT_WAM1_STR-BWVOR sy-vline 
WA_WINT_WAM1_STR-BWSCL sy-vline 
WA_WINT_WAM1_STR-SAISO sy-vline 
WA_WINT_WAM1_STR-DATAB sy-vline 
WA_WINT_WAM1_STR-LIQDT sy-vline 
WA_WINT_WAM1_STR-SATNR sy-vline 
WA_WINT_WAM1_STR-ATTYP sy-vline 
WA_WINT_WAM1_STR-MEINS sy-vline 
WA_WINT_WAM1_STR-BSTME sy-vline 
WA_WINT_WAM1_STR-MLGUT sy-vline 
WA_WINT_WAM1_STR-MATNR1 sy-vline 
WA_WINT_WAM1_STR-SSTUF sy-vline 
WA_WINT_WAM1_STR-PFLKS sy-vline 
WA_WINT_WAM1_STR-LSTFL sy-vline 
WA_WINT_WAM1_STR-LSTVZ sy-vline 
WA_WINT_WAM1_STR-LSTAK sy-vline 
WA_WINT_WAM1_STR-MAKTX sy-vline 
WA_WINT_WAM1_STR-STRLI sy-vline 
WA_WINT_WAM1_STR-BWSCL_OLD sy-vline 
WA_WINT_WAM1_STR-CLASS_CHNG sy-vline 
WA_WINT_WAM1_STR-VARIA_NEW sy-vline 
WA_WINT_WAM1_STR-Q_BWSCL sy-vline 
WA_WINT_WAM1_STR-Q_CLASS sy-vline 
WA_WINT_WAM1_STR-Q_LTIME sy-vline 
WA_WINT_WAM1_STR-Q_LAYOUT sy-vline 
WA_WINT_WAM1_STR-Q_SEPARAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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