ABAP Select data from SAP table GMIT into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GMIT
*  INTO TABLE @DATA(IT_GMIT2).
*--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_GMIT INDEX 1 INTO DATA(WA_GMIT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GMIT>-RCLNT = 1.
<GMIT>-RLDNR = 1.
<GMIT>-RRCTY = 1.
<GMIT>-RVERS = 1.
<GMIT>-RYEAR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GMIT-ROBJNR, sy-vline,
  WA_GMIT-COBJNR, sy-vline,
  WA_GMIT-SOBJNR, sy-vline,
  WA_GMIT-RTCUR, sy-vline,
  WA_GMIT-RUNIT, sy-vline,
  WA_GMIT-RPMAX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GMIT 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_GMIT 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_GMIT INTO WA_GMIT.


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

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

*Conversion exit GJAHR, internal->external for field RYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_GMIT-RYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GMIT-RYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field RUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_GMIT-RUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GMIT-RUNIT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GJAHR, internal->external for field RGRANTEE_FY_9
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_GMIT-RGRANTEE_FY_9
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GMIT-RGRANTEE_FY_9.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_GMIT-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GMIT-LOGSYS.
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_GMIT_STR, 
RCLNT TYPE STRING,
RLDNR TYPE STRING,
RRCTY TYPE STRING,
RVERS TYPE STRING,
RYEAR TYPE STRING,
ROBJNR TYPE STRING,
COBJNR TYPE STRING,
SOBJNR TYPE STRING,
RTCUR TYPE STRING,
RUNIT TYPE STRING,
RPMAX TYPE STRING,
RBUKRS TYPE STRING,
RGRANT_NBR TYPE STRING,
RSPONSORED_PROG TYPE STRING,
RSPONSORED_CLASS TYPE STRING,
RBDGT_VLDTY_NBR TYPE STRING,
RFUND TYPE STRING,
RVALUETYPE_9 TYPE STRING,
RTRANS TYPE STRING,
RSTATS_IND TYPE STRING,
RGRANTEE_FY_9 TYPE STRING,
LOGSYS TYPE STRING,
BDGT_STATE TYPE STRING,
TSLVT TYPE STRING,
TSL01 TYPE STRING,
TSL02 TYPE STRING,
TSL03 TYPE STRING,
TSL04 TYPE STRING,
TSL05 TYPE STRING,
TSL06 TYPE STRING,
TSL07 TYPE STRING,
TSL08 TYPE STRING,
TSL09 TYPE STRING,
TSL10 TYPE STRING,
TSL11 TYPE STRING,
TSL12 TYPE STRING,
TSL13 TYPE STRING,
TSL14 TYPE STRING,
TSL15 TYPE STRING,
TSL16 TYPE STRING,
HSLVT TYPE STRING,
HSL01 TYPE STRING,
HSL02 TYPE STRING,
HSL03 TYPE STRING,
HSL04 TYPE STRING,
HSL05 TYPE STRING,
HSL06 TYPE STRING,
HSL07 TYPE STRING,
HSL08 TYPE STRING,
HSL09 TYPE STRING,
HSL10 TYPE STRING,
HSL11 TYPE STRING,
HSL12 TYPE STRING,
HSL13 TYPE STRING,
HSL14 TYPE STRING,
HSL15 TYPE STRING,
HSL16 TYPE STRING,
MSLVT TYPE STRING,
MSL01 TYPE STRING,
MSL02 TYPE STRING,
MSL03 TYPE STRING,
MSL04 TYPE STRING,
MSL05 TYPE STRING,
MSL06 TYPE STRING,
MSL07 TYPE STRING,
MSL08 TYPE STRING,
MSL09 TYPE STRING,
MSL10 TYPE STRING,
MSL11 TYPE STRING,
MSL12 TYPE STRING,
MSL13 TYPE STRING,
MSL14 TYPE STRING,
MSL15 TYPE STRING,
MSL16 TYPE STRING,
CSPRED TYPE STRING,
QSPRED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GMIT_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_GMIT_STR-RCLNT sy-vline 
WA_GMIT_STR-RLDNR sy-vline 
WA_GMIT_STR-RRCTY sy-vline 
WA_GMIT_STR-RVERS sy-vline 
WA_GMIT_STR-RYEAR sy-vline 
WA_GMIT_STR-ROBJNR sy-vline 
WA_GMIT_STR-COBJNR sy-vline 
WA_GMIT_STR-SOBJNR sy-vline 
WA_GMIT_STR-RTCUR sy-vline 
WA_GMIT_STR-RUNIT sy-vline 
WA_GMIT_STR-RPMAX sy-vline 
WA_GMIT_STR-RBUKRS sy-vline 
WA_GMIT_STR-RGRANT_NBR sy-vline 
WA_GMIT_STR-RSPONSORED_PROG sy-vline 
WA_GMIT_STR-RSPONSORED_CLASS sy-vline 
WA_GMIT_STR-RBDGT_VLDTY_NBR sy-vline 
WA_GMIT_STR-RFUND sy-vline 
WA_GMIT_STR-RVALUETYPE_9 sy-vline 
WA_GMIT_STR-RTRANS sy-vline 
WA_GMIT_STR-RSTATS_IND sy-vline 
WA_GMIT_STR-RGRANTEE_FY_9 sy-vline 
WA_GMIT_STR-LOGSYS sy-vline 
WA_GMIT_STR-BDGT_STATE sy-vline 
WA_GMIT_STR-TSLVT sy-vline 
WA_GMIT_STR-TSL01 sy-vline 
WA_GMIT_STR-TSL02 sy-vline 
WA_GMIT_STR-TSL03 sy-vline 
WA_GMIT_STR-TSL04 sy-vline 
WA_GMIT_STR-TSL05 sy-vline 
WA_GMIT_STR-TSL06 sy-vline 
WA_GMIT_STR-TSL07 sy-vline 
WA_GMIT_STR-TSL08 sy-vline 
WA_GMIT_STR-TSL09 sy-vline 
WA_GMIT_STR-TSL10 sy-vline 
WA_GMIT_STR-TSL11 sy-vline 
WA_GMIT_STR-TSL12 sy-vline 
WA_GMIT_STR-TSL13 sy-vline 
WA_GMIT_STR-TSL14 sy-vline 
WA_GMIT_STR-TSL15 sy-vline 
WA_GMIT_STR-TSL16 sy-vline 
WA_GMIT_STR-HSLVT sy-vline 
WA_GMIT_STR-HSL01 sy-vline 
WA_GMIT_STR-HSL02 sy-vline 
WA_GMIT_STR-HSL03 sy-vline 
WA_GMIT_STR-HSL04 sy-vline 
WA_GMIT_STR-HSL05 sy-vline 
WA_GMIT_STR-HSL06 sy-vline 
WA_GMIT_STR-HSL07 sy-vline 
WA_GMIT_STR-HSL08 sy-vline 
WA_GMIT_STR-HSL09 sy-vline 
WA_GMIT_STR-HSL10 sy-vline 
WA_GMIT_STR-HSL11 sy-vline 
WA_GMIT_STR-HSL12 sy-vline 
WA_GMIT_STR-HSL13 sy-vline 
WA_GMIT_STR-HSL14 sy-vline 
WA_GMIT_STR-HSL15 sy-vline 
WA_GMIT_STR-HSL16 sy-vline 
WA_GMIT_STR-MSLVT sy-vline 
WA_GMIT_STR-MSL01 sy-vline 
WA_GMIT_STR-MSL02 sy-vline 
WA_GMIT_STR-MSL03 sy-vline 
WA_GMIT_STR-MSL04 sy-vline 
WA_GMIT_STR-MSL05 sy-vline 
WA_GMIT_STR-MSL06 sy-vline 
WA_GMIT_STR-MSL07 sy-vline 
WA_GMIT_STR-MSL08 sy-vline 
WA_GMIT_STR-MSL09 sy-vline 
WA_GMIT_STR-MSL10 sy-vline 
WA_GMIT_STR-MSL11 sy-vline 
WA_GMIT_STR-MSL12 sy-vline 
WA_GMIT_STR-MSL13 sy-vline 
WA_GMIT_STR-MSL14 sy-vline 
WA_GMIT_STR-MSL15 sy-vline 
WA_GMIT_STR-MSL16 sy-vline 
WA_GMIT_STR-CSPRED sy-vline 
WA_GMIT_STR-QSPRED sy-vline      INTO ld_text SEPARATED BY SPACE.

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