ABAP Select data from SAP table TMCIR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TMCIR
*  INTO TABLE @DATA(IT_TMCIR2).
*--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_TMCIR INDEX 1 INTO DATA(WA_TMCIR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TMCIR>-MANDANT = 1.
<TMCIR>-MCONAME = 1.
<TMCIR>-MCID = 1.
<TMCIR>-MISTATE = 1.
<TMCIR>-MIBTCHLOCK = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TMCIR-MIMSGNO, sy-vline,
  WA_TMCIR-MIBEGDATE, sy-vline,
  WA_TMCIR-MIBEGTIME, sy-vline,
  WA_TMCIR-MITUPCNT, sy-vline,
  WA_TMCIR-MIDATE, sy-vline,
  WA_TMCIR-MITIME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TMCIR 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_TMCIR 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_TMCIR INTO WA_TMCIR.


*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_TMCIR_STR, 
MANDANT TYPE STRING,
MCONAME TYPE STRING,
MCID TYPE STRING,
MISTATE TYPE STRING,
MIBTCHLOCK TYPE STRING,
MIMSGNO TYPE STRING,
MIBEGDATE TYPE STRING,
MIBEGTIME TYPE STRING,
MITUPCNT TYPE STRING,
MIDATE TYPE STRING,
MITIME TYPE STRING,
MILKZFLAG TYPE STRING,
MILKZCNT TYPE STRING,
MILKZDATE TYPE STRING,
MILKZTIME TYPE STRING,
MIGENDATE TYPE STRING,
MIGENTIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TMCIR_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_TMCIR_STR-MANDANT sy-vline 
WA_TMCIR_STR-MCONAME sy-vline 
WA_TMCIR_STR-MCID sy-vline 
WA_TMCIR_STR-MISTATE sy-vline 
WA_TMCIR_STR-MIBTCHLOCK sy-vline 
WA_TMCIR_STR-MIMSGNO sy-vline 
WA_TMCIR_STR-MIBEGDATE sy-vline 
WA_TMCIR_STR-MIBEGTIME sy-vline 
WA_TMCIR_STR-MITUPCNT sy-vline 
WA_TMCIR_STR-MIDATE sy-vline 
WA_TMCIR_STR-MITIME sy-vline 
WA_TMCIR_STR-MILKZFLAG sy-vline 
WA_TMCIR_STR-MILKZCNT sy-vline 
WA_TMCIR_STR-MILKZDATE sy-vline 
WA_TMCIR_STR-MILKZTIME sy-vline 
WA_TMCIR_STR-MIGENDATE sy-vline 
WA_TMCIR_STR-MIGENTIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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