ABAP Select data from SAP table CC1ERH into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CC1ERH 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 CC1ERH. 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 CC1ERH 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_CC1ERH TYPE STANDARD TABLE OF CC1ERH,
      WA_CC1ERH TYPE CC1ERH,
      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: <CC1ERH> TYPE CC1ERH.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CC1ERH.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CC1ERH
  INTO TABLE IT_CC1ERH.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CC1ERH
*  INTO TABLE @DATA(IT_CC1ERH2).
*--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_CC1ERH INDEX 1 INTO DATA(WA_CC1ERH2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CC1ERH ASSIGNING <CC1ERH>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CC1ERH>-MANDT = 1.
<CC1ERH>-TEVOR = 1.
<CC1ERH>-TEVORTEXT = 1.
<CC1ERH>-UNAME1 = 1.
<CC1ERH>-DATUM1 = 1.

ENDLOOP.

LOOP AT IT_CC1ERH INTO WA_CC1ERH.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CC1ERH-UZEIT1, sy-vline,
  WA_CC1ERH-PGMID1, sy-vline,
  WA_CC1ERH-UNAME2, sy-vline,
  WA_CC1ERH-DATUM2, sy-vline,
  WA_CC1ERH-UZEIT2, sy-vline,
  WA_CC1ERH-PGMID2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CC1ERH 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_CC1ERH 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_CC1ERH INTO WA_CC1ERH.


*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_CC1ERH_STR, 
MANDT TYPE STRING,
TEVOR TYPE STRING,
TEVORTEXT TYPE STRING,
UNAME1 TYPE STRING,
DATUM1 TYPE STRING,
UZEIT1 TYPE STRING,
PGMID1 TYPE STRING,
UNAME2 TYPE STRING,
DATUM2 TYPE STRING,
UZEIT2 TYPE STRING,
PGMID2 TYPE STRING,
STATU2 TYPE STRING,
UNAME3 TYPE STRING,
DATUM3 TYPE STRING,
UZEIT3 TYPE STRING,
PGMID3 TYPE STRING,
STATU3 TYPE STRING,
UNAME4 TYPE STRING,
DATUM4 TYPE STRING,
UZEIT4 TYPE STRING,
PGMID4 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CC1ERH_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_CC1ERH_STR-MANDT sy-vline 
WA_CC1ERH_STR-TEVOR sy-vline 
WA_CC1ERH_STR-TEVORTEXT sy-vline 
WA_CC1ERH_STR-UNAME1 sy-vline 
WA_CC1ERH_STR-DATUM1 sy-vline 
WA_CC1ERH_STR-UZEIT1 sy-vline 
WA_CC1ERH_STR-PGMID1 sy-vline 
WA_CC1ERH_STR-UNAME2 sy-vline 
WA_CC1ERH_STR-DATUM2 sy-vline 
WA_CC1ERH_STR-UZEIT2 sy-vline 
WA_CC1ERH_STR-PGMID2 sy-vline 
WA_CC1ERH_STR-STATU2 sy-vline 
WA_CC1ERH_STR-UNAME3 sy-vline 
WA_CC1ERH_STR-DATUM3 sy-vline 
WA_CC1ERH_STR-UZEIT3 sy-vline 
WA_CC1ERH_STR-PGMID3 sy-vline 
WA_CC1ERH_STR-STATU3 sy-vline 
WA_CC1ERH_STR-UNAME4 sy-vline 
WA_CC1ERH_STR-DATUM4 sy-vline 
WA_CC1ERH_STR-UZEIT4 sy-vline 
WA_CC1ERH_STR-PGMID4 sy-vline      INTO ld_text SEPARATED BY SPACE.

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