ABAP Select data from SAP table CC1_EXTERNWAGE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CC1_EXTERNWAGE 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 CC1_EXTERNWAGE. 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 CC1_EXTERNWAGE 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_CC1_EXTERNWAGE TYPE STANDARD TABLE OF CC1_EXTERNWAGE,
      WA_CC1_EXTERNWAGE TYPE CC1_EXTERNWAGE,
      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: <CC1_EXTERNWAGE> TYPE CC1_EXTERNWAGE.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CC1_EXTERNWAGE.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CC1_EXTERNWAGE
  INTO TABLE IT_CC1_EXTERNWAGE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CC1_EXTERNWAGE
*  INTO TABLE @DATA(IT_CC1_EXTERNWAGE2).
*--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_CC1_EXTERNWAGE INDEX 1 INTO DATA(WA_CC1_EXTERNWAGE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CC1_EXTERNWAGE ASSIGNING <CC1_EXTERNWAGE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CC1_EXTERNWAGE>-PDSNR = 1.
<CC1_EXTERNWAGE>-PERNR = 1.
<CC1_EXTERNWAGE>-ZAUSW = 1.
<CC1_EXTERNWAGE>-LDATE = 1.
<CC1_EXTERNWAGE>-LTIME = 1.

ENDLOOP.

LOOP AT IT_CC1_EXTERNWAGE INTO WA_CC1_EXTERNWAGE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CC1_EXTERNWAGE-ERDAT, sy-vline,
  WA_CC1_EXTERNWAGE-ERTIM, sy-vline,
  WA_CC1_EXTERNWAGE-TERID, sy-vline,
  WA_CC1_EXTERNWAGE-EXLGA, sy-vline,
  WA_CC1_EXTERNWAGE-ZEINH, sy-vline,
  WA_CC1_EXTERNWAGE-HRAZL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CC1_EXTERNWAGE 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_CC1_EXTERNWAGE 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_CC1_EXTERNWAGE INTO WA_CC1_EXTERNWAGE.


*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_CC1_EXTERNWAGE_STR, 
PDSNR TYPE STRING,
PERNR TYPE STRING,
ZAUSW TYPE STRING,
LDATE TYPE STRING,
LTIME TYPE STRING,
ERDAT TYPE STRING,
ERTIM TYPE STRING,
TERID TYPE STRING,
EXLGA TYPE STRING,
ZEINH TYPE STRING,
HRAZL TYPE STRING,
HRBET TYPE STRING,
WAERS TYPE STRING,
CUSTOMER_FIELD_1 TYPE STRING,
CUSTOMER_FIELD_2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CC1_EXTERNWAGE_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_CC1_EXTERNWAGE_STR-PDSNR sy-vline 
WA_CC1_EXTERNWAGE_STR-PERNR sy-vline 
WA_CC1_EXTERNWAGE_STR-ZAUSW sy-vline 
WA_CC1_EXTERNWAGE_STR-LDATE sy-vline 
WA_CC1_EXTERNWAGE_STR-LTIME sy-vline 
WA_CC1_EXTERNWAGE_STR-ERDAT sy-vline 
WA_CC1_EXTERNWAGE_STR-ERTIM sy-vline 
WA_CC1_EXTERNWAGE_STR-TERID sy-vline 
WA_CC1_EXTERNWAGE_STR-EXLGA sy-vline 
WA_CC1_EXTERNWAGE_STR-ZEINH sy-vline 
WA_CC1_EXTERNWAGE_STR-HRAZL sy-vline 
WA_CC1_EXTERNWAGE_STR-HRBET sy-vline 
WA_CC1_EXTERNWAGE_STR-WAERS sy-vline 
WA_CC1_EXTERNWAGE_STR-CUSTOMER_FIELD_1 sy-vline 
WA_CC1_EXTERNWAGE_STR-CUSTOMER_FIELD_2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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