ABAP Select data from SAP table TRST_LEGAL_LIMIT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRST_LEGAL_LIMIT
*  INTO TABLE @DATA(IT_TRST_LEGAL_LIMIT2).
*--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_TRST_LEGAL_LIMIT INDEX 1 INTO DATA(WA_TRST_LEGAL_LIMIT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRST_LEGAL_LIMIT>-COMPANY_CODE = 1.
<TRST_LEGAL_LIMIT>-SECURITY_ACCOUNT = 1.
<TRST_LEGAL_LIMIT>-SECURITY_ID = 1.
<TRST_LEGAL_LIMIT>-SHORT_TEXT = 1.
<TRST_LEGAL_LIMIT>-LONG_TEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRST_LEGAL_LIMIT-ISSUE_CURRENCY, sy-vline,
  WA_TRST_LEGAL_LIMIT-VALID_FROM, sy-vline,
  WA_TRST_LEGAL_LIMIT-NUMBER_OF_SHARES, sy-vline,
  WA_TRST_LEGAL_LIMIT-CAPITAL_PR_SHARE, sy-vline,
  WA_TRST_LEGAL_LIMIT-VOTES_PER_SHARE, sy-vline,
  WA_TRST_LEGAL_LIMIT-EXTRA_CAPITAL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRST_LEGAL_LIMIT 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_TRST_LEGAL_LIMIT 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_TRST_LEGAL_LIMIT INTO WA_TRST_LEGAL_LIMIT.


*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 SECURITY_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TRST_LEGAL_LIMIT-SECURITY_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRST_LEGAL_LIMIT-SECURITY_ID.
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_TRST_LEGAL_LIMIT_STR, 
COMPANY_CODE TYPE STRING,
SECURITY_ACCOUNT TYPE STRING,
SECURITY_ID TYPE STRING,
SHORT_TEXT TYPE STRING,
LONG_TEXT TYPE STRING,
ISSUE_CURRENCY TYPE STRING,
VALID_FROM TYPE STRING,
NUMBER_OF_SHARES TYPE STRING,
CAPITAL_PR_SHARE TYPE STRING,
VOTES_PER_SHARE TYPE STRING,
EXTRA_CAPITAL TYPE STRING,
AGGREGATION_KEY TYPE STRING,
CLASS_DATA_CHANGED TYPE STRING,
CROSSED_LIMIT TYPE STRING,
WARNING TYPE STRING,
AGGREGATION_KEY_PRIMO TYPE STRING,
UNITS_PRIMO TYPE STRING,
CAPITAL_PRIMO TYPE STRING,
VOTES_PRIMO TYPE STRING,
CAPITAL_PCT_PRIMO TYPE STRING,
SUM_CAPITAL_PRIMO TYPE STRING,
SUM_VOTES_PRIMO TYPE STRING,
VOTES_PCT_PRIMO TYPE STRING,
SUM_CAPITAL_PCT_PRIMO TYPE STRING,
SUM_VOTES_PCT_PRIMO TYPE STRING,
UNITS_ULTIMO TYPE STRING,
CAPITAL_ULTIMO TYPE STRING,
VOTES_ULTIMO TYPE STRING,
CAPITAL_PCT_ULTIMO TYPE STRING,
VOTES_PCT_ULTIMO TYPE STRING,
SUM_CAPITAL_ULTIMO TYPE STRING,
SUM_VOTES_ULTIMO TYPE STRING,
SUM_CAPITAL_PCT_ULTIMO TYPE STRING,
SUM_VOTES_PCT_ULTIMO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRST_LEGAL_LIMIT_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_TRST_LEGAL_LIMIT_STR-COMPANY_CODE sy-vline 
WA_TRST_LEGAL_LIMIT_STR-SECURITY_ACCOUNT sy-vline 
WA_TRST_LEGAL_LIMIT_STR-SECURITY_ID sy-vline 
WA_TRST_LEGAL_LIMIT_STR-SHORT_TEXT sy-vline 
WA_TRST_LEGAL_LIMIT_STR-LONG_TEXT sy-vline 
WA_TRST_LEGAL_LIMIT_STR-ISSUE_CURRENCY sy-vline 
WA_TRST_LEGAL_LIMIT_STR-VALID_FROM sy-vline 
WA_TRST_LEGAL_LIMIT_STR-NUMBER_OF_SHARES sy-vline 
WA_TRST_LEGAL_LIMIT_STR-CAPITAL_PR_SHARE sy-vline 
WA_TRST_LEGAL_LIMIT_STR-VOTES_PER_SHARE sy-vline 
WA_TRST_LEGAL_LIMIT_STR-EXTRA_CAPITAL sy-vline 
WA_TRST_LEGAL_LIMIT_STR-AGGREGATION_KEY sy-vline 
WA_TRST_LEGAL_LIMIT_STR-CLASS_DATA_CHANGED sy-vline 
WA_TRST_LEGAL_LIMIT_STR-CROSSED_LIMIT sy-vline 
WA_TRST_LEGAL_LIMIT_STR-WARNING sy-vline 
WA_TRST_LEGAL_LIMIT_STR-AGGREGATION_KEY_PRIMO sy-vline 
WA_TRST_LEGAL_LIMIT_STR-UNITS_PRIMO sy-vline 
WA_TRST_LEGAL_LIMIT_STR-CAPITAL_PRIMO sy-vline 
WA_TRST_LEGAL_LIMIT_STR-VOTES_PRIMO sy-vline 
WA_TRST_LEGAL_LIMIT_STR-CAPITAL_PCT_PRIMO sy-vline 
WA_TRST_LEGAL_LIMIT_STR-SUM_CAPITAL_PRIMO sy-vline 
WA_TRST_LEGAL_LIMIT_STR-SUM_VOTES_PRIMO sy-vline 
WA_TRST_LEGAL_LIMIT_STR-VOTES_PCT_PRIMO sy-vline 
WA_TRST_LEGAL_LIMIT_STR-SUM_CAPITAL_PCT_PRIMO sy-vline 
WA_TRST_LEGAL_LIMIT_STR-SUM_VOTES_PCT_PRIMO sy-vline 
WA_TRST_LEGAL_LIMIT_STR-UNITS_ULTIMO sy-vline 
WA_TRST_LEGAL_LIMIT_STR-CAPITAL_ULTIMO sy-vline 
WA_TRST_LEGAL_LIMIT_STR-VOTES_ULTIMO sy-vline 
WA_TRST_LEGAL_LIMIT_STR-CAPITAL_PCT_ULTIMO sy-vline 
WA_TRST_LEGAL_LIMIT_STR-VOTES_PCT_ULTIMO sy-vline 
WA_TRST_LEGAL_LIMIT_STR-SUM_CAPITAL_ULTIMO sy-vline 
WA_TRST_LEGAL_LIMIT_STR-SUM_VOTES_ULTIMO sy-vline 
WA_TRST_LEGAL_LIMIT_STR-SUM_CAPITAL_PCT_ULTIMO sy-vline 
WA_TRST_LEGAL_LIMIT_STR-SUM_VOTES_PCT_ULTIMO sy-vline      INTO ld_text SEPARATED BY SPACE.

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