ABAP Select data from SAP table SWZAIRET into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SWZAIRET
*  INTO TABLE @DATA(IT_SWZAIRET2).
*--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_SWZAIRET INDEX 1 INTO DATA(WA_SWZAIRET2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SWZAIRET>-CLIENT = 1.
<SWZAIRET>-AI_ID = 1.
<SWZAIRET>-OBJECTID = 1.
<SWZAIRET>-TASK_ID = 1.
<SWZAIRET>-CODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SWZAIRET-ERRORTYPE, sy-vline,
  WA_SWZAIRET-NAME, sy-vline,
  WA_SWZAIRET-WORKAREA, sy-vline,
  WA_SWZAIRET-MESSAGE, sy-vline,
  WA_SWZAIRET-VARIABLE1, sy-vline,
  WA_SWZAIRET-VARIABLE2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SWZAIRET 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_SWZAIRET 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_SWZAIRET INTO WA_SWZAIRET.


*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_SWZAIRET_STR, 
CLIENT TYPE STRING,
AI_ID TYPE STRING,
OBJECTID TYPE STRING,
TASK_ID TYPE STRING,
CODE TYPE STRING,
ERRORTYPE TYPE STRING,
NAME TYPE STRING,
WORKAREA TYPE STRING,
MESSAGE TYPE STRING,
VARIABLE1 TYPE STRING,
VARIABLE2 TYPE STRING,
VARIABLE3 TYPE STRING,
VARIABLE4 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SWZAIRET_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_SWZAIRET_STR-CLIENT sy-vline 
WA_SWZAIRET_STR-AI_ID sy-vline 
WA_SWZAIRET_STR-OBJECTID sy-vline 
WA_SWZAIRET_STR-TASK_ID sy-vline 
WA_SWZAIRET_STR-CODE sy-vline 
WA_SWZAIRET_STR-ERRORTYPE sy-vline 
WA_SWZAIRET_STR-NAME sy-vline 
WA_SWZAIRET_STR-WORKAREA sy-vline 
WA_SWZAIRET_STR-MESSAGE sy-vline 
WA_SWZAIRET_STR-VARIABLE1 sy-vline 
WA_SWZAIRET_STR-VARIABLE2 sy-vline 
WA_SWZAIRET_STR-VARIABLE3 sy-vline 
WA_SWZAIRET_STR-VARIABLE4 sy-vline      INTO ld_text SEPARATED BY SPACE.

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