ABAP Select data from SAP table TCIS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TCIS
*  INTO TABLE @DATA(IT_TCIS2).
*--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_TCIS INDEX 1 INTO DATA(WA_TCIS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TCIS>-MANDT = 1.
<TCIS>-CISKY = 1.
<TCIS>-CPICD = 1.
<TCIS>-CPICP = 1.
<TCIS>-DELIM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TCIS-DELHX, sy-vline,
  WA_TCIS-MCMAX, sy-vline,
  WA_TCIS-OUTLN, sy-vline,
  WA_TCIS-TXTLN, sy-vline,
  WA_TCIS-SORTK, sy-vline,
  WA_TCIS-STRLN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TCIS 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_TCIS 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_TCIS INTO WA_TCIS.


*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_TCIS_STR, 
MANDT TYPE STRING,
CISKY TYPE STRING,
CPICD TYPE STRING,
CPICP TYPE STRING,
DELIM TYPE STRING,
DELHX TYPE STRING,
MCMAX TYPE STRING,
OUTLN TYPE STRING,
TXTLN TYPE STRING,
SORTK TYPE STRING,
STRLN TYPE STRING,
MEXTV TYPE STRING,
MINTV TYPE STRING,
DEXTV TYPE STRING,
DINTV TYPE STRING,
MRESV TYPE STRING,
MCART TYPE STRING,
MKLAT TYPE STRING,
DKLAT TYPE STRING,
MM01M TYPE STRING,
MM02M TYPE STRING,
CS01M TYPE STRING,
CS02M TYPE STRING,
CV01M TYPE STRING,
CV02M TYPE STRING,
CV04M TYPE STRING,
IE01M TYPE STRING,
IE02M TYPE STRING,
IL01M TYPE STRING,
IL02M TYPE STRING,
IW21M TYPE STRING,
IW22M TYPE STRING,
CC01M TYPE STRING,
CC02M TYPE STRING,
AEXTV TYPE STRING,
AINTV TYPE STRING,
EEXTV TYPE STRING,
EINTV TYPE STRING,
TEXTV TYPE STRING,
TINTV TYPE STRING,
PEXTV TYPE STRING,
PINTV TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TCIS_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_TCIS_STR-MANDT sy-vline 
WA_TCIS_STR-CISKY sy-vline 
WA_TCIS_STR-CPICD sy-vline 
WA_TCIS_STR-CPICP sy-vline 
WA_TCIS_STR-DELIM sy-vline 
WA_TCIS_STR-DELHX sy-vline 
WA_TCIS_STR-MCMAX sy-vline 
WA_TCIS_STR-OUTLN sy-vline 
WA_TCIS_STR-TXTLN sy-vline 
WA_TCIS_STR-SORTK sy-vline 
WA_TCIS_STR-STRLN sy-vline 
WA_TCIS_STR-MEXTV sy-vline 
WA_TCIS_STR-MINTV sy-vline 
WA_TCIS_STR-DEXTV sy-vline 
WA_TCIS_STR-DINTV sy-vline 
WA_TCIS_STR-MRESV sy-vline 
WA_TCIS_STR-MCART sy-vline 
WA_TCIS_STR-MKLAT sy-vline 
WA_TCIS_STR-DKLAT sy-vline 
WA_TCIS_STR-MM01M sy-vline 
WA_TCIS_STR-MM02M sy-vline 
WA_TCIS_STR-CS01M sy-vline 
WA_TCIS_STR-CS02M sy-vline 
WA_TCIS_STR-CV01M sy-vline 
WA_TCIS_STR-CV02M sy-vline 
WA_TCIS_STR-CV04M sy-vline 
WA_TCIS_STR-IE01M sy-vline 
WA_TCIS_STR-IE02M sy-vline 
WA_TCIS_STR-IL01M sy-vline 
WA_TCIS_STR-IL02M sy-vline 
WA_TCIS_STR-IW21M sy-vline 
WA_TCIS_STR-IW22M sy-vline 
WA_TCIS_STR-CC01M sy-vline 
WA_TCIS_STR-CC02M sy-vline 
WA_TCIS_STR-AEXTV sy-vline 
WA_TCIS_STR-AINTV sy-vline 
WA_TCIS_STR-EEXTV sy-vline 
WA_TCIS_STR-EINTV sy-vline 
WA_TCIS_STR-TEXTV sy-vline 
WA_TCIS_STR-TINTV sy-vline 
WA_TCIS_STR-PEXTV sy-vline 
WA_TCIS_STR-PINTV sy-vline      INTO ld_text SEPARATED BY SPACE.

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