ABAP Select data from SAP table REXCESM180 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 REXCESM180 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 REXCESM180. 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 REXCESM180 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_REXCESM180 TYPE STANDARD TABLE OF REXCESM180,
      WA_REXCESM180 TYPE REXCESM180,
      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: <REXCESM180> TYPE REXCESM180.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_REXCESM180.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM REXCESM180
  INTO TABLE IT_REXCESM180.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REXCESM180
*  INTO TABLE @DATA(IT_REXCESM1802).
*--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_REXCESM180 INDEX 1 INTO DATA(WA_REXCESM1802).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_REXCESM180 ASSIGNING <REXCESM180>.
*To update a field value using a field symbol simply change the value via the field symbol pointer
<REXCESM180>-MANDT = 1.
<REXCESM180>-BUKRS = 1.
<REXCESM180>-GJAHR = 1.
<REXCESM180>-DECNR = 1.
<REXCESM180>-LIFNR = 1.
ENDLOOP.

LOOP AT IT_REXCESM180 INTO WA_REXCESM180.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REXCESM180-RECID, sy-vline,
WA_REXCESM180-REPID, sy-vline,
WA_REXCESM180-NAMEREC, sy-vline,
WA_REXCESM180-REGION, sy-vline,
WA_REXCESM180-METHOD, sy-vline,
WA_REXCESM180-KURSF, sy-vline.
ENDLOOP. *Add any further fields from structure WA_REXCESM180 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_REXCESM180 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_REXCESM180 INTO WA_REXCESM180. *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 GJAHR, internal->external for field GJAHR CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT' EXPORTING input = WA_REXCESM180-GJAHR IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_REXCESM180-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DECNR CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_REXCESM180-DECNR IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_REXCESM180-DECNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_REXCESM180-LIFNR IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_REXCESM180-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field KURSF CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT' EXPORTING input = WA_REXCESM180-KURSF IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_REXCESM180-KURSF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DECNRP CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_REXCESM180-DECNRP IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_REXCESM180-DECNRP.
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_REXCESM180_STR,
MANDT TYPE STRING,
BUKRS TYPE STRING,
GJAHR TYPE STRING,
DECNR TYPE STRING,
LIFNR TYPE STRING,
RECID TYPE STRING,
REPID TYPE STRING,
NAMEREC TYPE STRING,
REGION TYPE STRING,
METHOD TYPE STRING,
KURSF TYPE STRING,
QSSHH TYPE STRING,
QBSHH TYPE STRING,
WAERS TYPE STRING,
AYEAR TYPE STRING,
INTRENO TYPE STRING,
XSTOR TYPE STRING,
DECID TYPE STRING,
NAMEDEC TYPE STRING,
MEDIUM TYPE STRING,
PNAME1 TYPE STRING,
PHONE1 TYPE STRING,
DECTYP TYPE STRING,
DECNRP TYPE STRING,END OF T_EKKO_STR. DATA: WA_REXCESM180_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_REXCESM180_STR-MANDT sy-vline
WA_REXCESM180_STR-BUKRS sy-vline
WA_REXCESM180_STR-GJAHR sy-vline
WA_REXCESM180_STR-DECNR sy-vline
WA_REXCESM180_STR-LIFNR sy-vline
WA_REXCESM180_STR-RECID sy-vline
WA_REXCESM180_STR-REPID sy-vline
WA_REXCESM180_STR-NAMEREC sy-vline
WA_REXCESM180_STR-REGION sy-vline
WA_REXCESM180_STR-METHOD sy-vline
WA_REXCESM180_STR-KURSF sy-vline
WA_REXCESM180_STR-QSSHH sy-vline
WA_REXCESM180_STR-QBSHH sy-vline
WA_REXCESM180_STR-WAERS sy-vline
WA_REXCESM180_STR-AYEAR sy-vline
WA_REXCESM180_STR-INTRENO sy-vline
WA_REXCESM180_STR-XSTOR sy-vline
WA_REXCESM180_STR-DECID sy-vline
WA_REXCESM180_STR-NAMEDEC sy-vline
WA_REXCESM180_STR-MEDIUM sy-vline
WA_REXCESM180_STR-PNAME1 sy-vline
WA_REXCESM180_STR-PHONE1 sy-vline
WA_REXCESM180_STR-DECTYP sy-vline
WA_REXCESM180_STR-DECNRP sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.