ABAP Select data from SAP table WRMA_COMM into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WRMA_COMM 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 WRMA_COMM. 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 WRMA_COMM 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_WRMA_COMM TYPE STANDARD TABLE OF WRMA_COMM,
      WA_WRMA_COMM TYPE WRMA_COMM,
      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: <WRMA_COMM> TYPE WRMA_COMM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WRMA_COMM
*  INTO TABLE @DATA(IT_WRMA_COMM2).
*--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_WRMA_COMM INDEX 1 INTO DATA(WA_WRMA_COMM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WRMA_COMM>-ELEVEL = 1.
<WRMA_COMM>-OBJECT = 1.
<WRMA_COMM>-AUTYPE = 1.
<WRMA_COMM>-STUNR = 1.
<WRMA_COMM>-KAPPL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WRMA_COMM-KSCHL, sy-vline,
  WA_WRMA_COMM-KSCHL_ACC, sy-vline,
  WA_WRMA_COMM-UPDRULE, sy-vline,
  WA_WRMA_COMM-ELEVELR, sy-vline,
  WA_WRMA_COMM-PERIV, sy-vline,
  WA_WRMA_COMM-PERIOD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WRMA_COMM 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_WRMA_COMM 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_WRMA_COMM INTO WA_WRMA_COMM.


*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 PERI7, internal->external for field PERIOD
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_WRMA_COMM-PERIOD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRMA_COMM-PERIOD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI7, internal->external for field PERIODI
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_WRMA_COMM-PERIODI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRMA_COMM-PERIODI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI7, internal->external for field PERIODB
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_WRMA_COMM-PERIODB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRMA_COMM-PERIODB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI7, internal->external for field PERIODF
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_WRMA_COMM-PERIODF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRMA_COMM-PERIODF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI7, internal->external for field PERIODL
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_WRMA_COMM-PERIODL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRMA_COMM-PERIODL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI7, internal->external for field PERIODV
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_WRMA_COMM-PERIODV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRMA_COMM-PERIODV.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI7, internal->external for field PERIODVF
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_WRMA_COMM-PERIODVF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRMA_COMM-PERIODVF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI7, internal->external for field PERIOD2
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_WRMA_COMM-PERIOD2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRMA_COMM-PERIOD2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI7, internal->external for field PERIODB2
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_WRMA_COMM-PERIODB2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRMA_COMM-PERIODB2.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field RCLASV2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WRMA_COMM-RCLASV2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRMA_COMM-RCLASV2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RCLASVB2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WRMA_COMM-RCLASVB2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRMA_COMM-RCLASVB2.
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_WRMA_COMM_STR, 
ELEVEL TYPE STRING,
OBJECT TYPE STRING,
AUTYPE TYPE STRING,
STUNR TYPE STRING,
KAPPL TYPE STRING,
KSCHL TYPE STRING,
KSCHL_ACC TYPE STRING,
UPDRULE TYPE STRING,
ELEVELR TYPE STRING,
PERIV TYPE STRING,
PERIOD TYPE STRING,
PERIODI TYPE STRING,
PERIODB TYPE STRING,
PERIODF TYPE STRING,
PERIODL TYPE STRING,
PERIODV TYPE STRING,
PERIODVF TYPE STRING,
PERIV2 TYPE STRING,
PERIOD2 TYPE STRING,
PERIODB2 TYPE STRING,
KALSM TYPE STRING,
DMBTRORIG TYPE STRING,
DMBTR TYPE STRING,
WAERS TYPE STRING,
PERCENT TYPE STRING,
PERCENTN TYPE STRING,
PERCENTZ TYPE STRING,
LDATE TYPE STRING,
OBJECT_O TYPE STRING,
OBJECTL_O TYPE STRING,
KSCHL_ACC_CATEG TYPE STRING,
KSCHL_ACC_NVH TYPE STRING,
KONDTYPE TYPE STRING,
RCLASV TYPE STRING,
RCLASVB TYPE STRING,
RCLASV2 TYPE STRING,
RCLASVB2 TYPE STRING,
SHRINK_MODE TYPE STRING,
DMBTR_SHRR TYPE STRING,
BUKRS TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
UPDRULE_SHRR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WRMA_COMM_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_WRMA_COMM_STR-ELEVEL sy-vline 
WA_WRMA_COMM_STR-OBJECT sy-vline 
WA_WRMA_COMM_STR-AUTYPE sy-vline 
WA_WRMA_COMM_STR-STUNR sy-vline 
WA_WRMA_COMM_STR-KAPPL sy-vline 
WA_WRMA_COMM_STR-KSCHL sy-vline 
WA_WRMA_COMM_STR-KSCHL_ACC sy-vline 
WA_WRMA_COMM_STR-UPDRULE sy-vline 
WA_WRMA_COMM_STR-ELEVELR sy-vline 
WA_WRMA_COMM_STR-PERIV sy-vline 
WA_WRMA_COMM_STR-PERIOD sy-vline 
WA_WRMA_COMM_STR-PERIODI sy-vline 
WA_WRMA_COMM_STR-PERIODB sy-vline 
WA_WRMA_COMM_STR-PERIODF sy-vline 
WA_WRMA_COMM_STR-PERIODL sy-vline 
WA_WRMA_COMM_STR-PERIODV sy-vline 
WA_WRMA_COMM_STR-PERIODVF sy-vline 
WA_WRMA_COMM_STR-PERIV2 sy-vline 
WA_WRMA_COMM_STR-PERIOD2 sy-vline 
WA_WRMA_COMM_STR-PERIODB2 sy-vline 
WA_WRMA_COMM_STR-KALSM sy-vline 
WA_WRMA_COMM_STR-DMBTRORIG sy-vline 
WA_WRMA_COMM_STR-DMBTR sy-vline 
WA_WRMA_COMM_STR-WAERS sy-vline 
WA_WRMA_COMM_STR-PERCENT sy-vline 
WA_WRMA_COMM_STR-PERCENTN sy-vline 
WA_WRMA_COMM_STR-PERCENTZ sy-vline 
WA_WRMA_COMM_STR-LDATE sy-vline 
WA_WRMA_COMM_STR-OBJECT_O sy-vline 
WA_WRMA_COMM_STR-OBJECTL_O sy-vline 
WA_WRMA_COMM_STR-KSCHL_ACC_CATEG sy-vline 
WA_WRMA_COMM_STR-KSCHL_ACC_NVH sy-vline 
WA_WRMA_COMM_STR-KONDTYPE sy-vline 
WA_WRMA_COMM_STR-RCLASV sy-vline 
WA_WRMA_COMM_STR-RCLASVB sy-vline 
WA_WRMA_COMM_STR-RCLASV2 sy-vline 
WA_WRMA_COMM_STR-RCLASVB2 sy-vline 
WA_WRMA_COMM_STR-SHRINK_MODE sy-vline 
WA_WRMA_COMM_STR-DMBTR_SHRR sy-vline 
WA_WRMA_COMM_STR-BUKRS sy-vline 
WA_WRMA_COMM_STR-VKORG sy-vline 
WA_WRMA_COMM_STR-VTWEG sy-vline 
WA_WRMA_COMM_STR-UPDRULE_SHRR sy-vline      INTO ld_text SEPARATED BY SPACE.

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