ABAP Select data from SAP table RE20C into internal table
Get Example source ABAP code based on a different SAP table
Below is a number of ABAP code snippets to demonstrate how to select data from SAP RE20C 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 RE20C. 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 RE20C 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_RE20C TYPE STANDARD TABLE OF RE20C,
WA_RE20C TYPE RE20C,
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: <RE20C> TYPE RE20C.
*Process all fields in table header/work area as string values
PERFORM process_as_string_field_values CHANGING wa_RE20C.
SELECT *
*restrict ABAP select to first 10 rows
UP TO 10 ROWS
FROM RE20C
INTO TABLE IT_RE20C.
*Select data and declare internal table using in-line method @DATA
*SELECT *
* FROM RE20C
* INTO TABLE @DATA(IT_RE20C2).
*--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_RE20C INDEX 1 INTO DATA(WA_RE20C2).
*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RE20C ASSIGNING <RE20C>.
*To update a field value using a field symbol simply change the value via the field symbol pointer<RE20C>-MANDT = 1.
<RE20C>-OPERAND = 1.
<RE20C>-OPERANDTXT = 1.
<RE20C>-SAISON = 1.
<RE20C>-SAISONTXT = 1.
ENDLOOP. LOOP AT IT_RE20C INTO WA_RE20C. *Write horizonal line to screen report. WRITE:/ sy-uline. *Write selected data to screen/report before conversion. WRITE:/ sy-vline, WA_RE20C-MASS, sy-vline,
WA_RE20C-MASSTXT, sy-vline,
WA_RE20C-MASSBILLC6, sy-vline,
WA_RE20C-INDIKANN, sy-vline,
WA_RE20C-INDIMUSS, sy-vline,
WA_RE20C-LAUFZEIT, sy-vline.
ENDLOOP. *Add any further fields from structure WA_RE20C 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_RE20C 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_RE20C INTO WA_RE20C. *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 CUNIT, internal->external for field MASS CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT' EXPORTING input = WA_RE20C-MASS IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_RE20C-MASS.
WRITE:/ 'New Value:', ld_input.
*Conversion exit LUNIT, internal->external for field MASSBILLC6 CALL FUNCTION 'CONVERSION_EXIT_LUNIT_OUTPUT' EXPORTING input = WA_RE20C-MASSBILLC6 IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_RE20C-MASSBILLC6.
WRITE:/ 'New Value:', ld_input.
*Conversion exit MM_TT, internal->external for field BEGINN CALL FUNCTION 'CONVERSION_EXIT_MM_TT_OUTPUT' EXPORTING input = WA_RE20C-BEGINN IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_RE20C-BEGINN.
WRITE:/ 'New Value:', ld_input.
*Conversion exit MM_TT, internal->external for field ENDE CALL FUNCTION 'CONVERSION_EXIT_MM_TT_OUTPUT' EXPORTING input = WA_RE20C-ENDE IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_RE20C-ENDE.
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_RE20C_STR,
MANDT TYPE STRING,
OPERAND TYPE STRING,
OPERANDTXT TYPE STRING,
SAISON TYPE STRING,
SAISONTXT TYPE STRING,
MASS TYPE STRING,
MASSTXT TYPE STRING,
MASSBILLC6 TYPE STRING,
INDIKANN TYPE STRING,
INDIMUSS TYPE STRING,
LAUFZEIT TYPE STRING,
OPWERTKZ TYPE STRING,
TIMBASIS TYPE STRING,
TIMTYP TYPE STRING,
BEGINN TYPE STRING,
ENDE TYPE STRING,
DPREIKZ TYPE STRING,
ZEITTYPTXT TYPE STRING,
VIEWAB TYPE STRING,
VIEWBIS TYPE STRING,END OF T_EKKO_STR. DATA: WA_RE20C_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_RE20C_STR-MANDT sy-vline
WA_RE20C_STR-OPERAND sy-vline
WA_RE20C_STR-OPERANDTXT sy-vline
WA_RE20C_STR-SAISON sy-vline
WA_RE20C_STR-SAISONTXT sy-vline
WA_RE20C_STR-MASS sy-vline
WA_RE20C_STR-MASSTXT sy-vline
WA_RE20C_STR-MASSBILLC6 sy-vline
WA_RE20C_STR-INDIKANN sy-vline
WA_RE20C_STR-INDIMUSS sy-vline
WA_RE20C_STR-LAUFZEIT sy-vline
WA_RE20C_STR-OPWERTKZ sy-vline
WA_RE20C_STR-TIMBASIS sy-vline
WA_RE20C_STR-TIMTYP sy-vline
WA_RE20C_STR-BEGINN sy-vline
WA_RE20C_STR-ENDE sy-vline
WA_RE20C_STR-DPREIKZ sy-vline
WA_RE20C_STR-ZEITTYPTXT sy-vline
WA_RE20C_STR-VIEWAB sy-vline
WA_RE20C_STR-VIEWBIS sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.
