ABAP Select data from SAP table PTR_BALANCE_RULE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PTR_BALANCE_RULE
*  INTO TABLE @DATA(IT_PTR_BALANCE_RULE2).
*--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_PTR_BALANCE_RULE INDEX 1 INTO DATA(WA_PTR_BALANCE_RULE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PTR_BALANCE_RULE>-LOLIM = 1.
<PTR_BALANCE_RULE>-LIMIT = 1.
<PTR_BALANCE_RULE>-HRSOR = 1.
<PTR_BALANCE_RULE>-HRSPA = 1.
<PTR_BALANCE_RULE>-AGELO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PTR_BALANCE_RULE-AGEHI, sy-vline,
  WA_PTR_BALANCE_RULE-AGEUN, sy-vline,
  WA_PTR_BALANCE_RULE-CKPNT, sy-vline,
  WA_PTR_BALANCE_RULE-CKPMO, sy-vline,
  WA_PTR_BALANCE_RULE-ZTART, sy-vline,
  WA_PTR_BALANCE_RULE-CPMOD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PTR_BALANCE_RULE 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_PTR_BALANCE_RULE 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_PTR_BALANCE_RULE INTO WA_PTR_BALANCE_RULE.


*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_PTR_BALANCE_RULE_STR, 
LOLIM TYPE STRING,
LIMIT TYPE STRING,
HRSOR TYPE STRING,
HRSPA TYPE STRING,
AGELO TYPE STRING,
AGEHI TYPE STRING,
AGEUN TYPE STRING,
CKPNT TYPE STRING,
CKPMO TYPE STRING,
ZTART TYPE STRING,
CPMOD TYPE STRING,
CPPMO TYPE STRING,
CPPPR TYPE STRING,
CPNUM TYPE STRING,
CPUNI TYPE STRING,
ZASTO TYPE STRING,
XZEST TYPE STRING,
BLCUT TYPE STRING,
CZTRT TYPE STRING,
XZEZT TYPE STRING,
VRZZT TYPE STRING,
LGART TYPE STRING,
IFTYP TYPE STRING,
VRZLG TYPE STRING,
CMESS TYPE STRING,
MESTY TYPE STRING,
RMESS TYPE STRING,
TOLER TYPE STRING,
TLPRC TYPE STRING,
METHO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PTR_BALANCE_RULE_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_PTR_BALANCE_RULE_STR-LOLIM sy-vline 
WA_PTR_BALANCE_RULE_STR-LIMIT sy-vline 
WA_PTR_BALANCE_RULE_STR-HRSOR sy-vline 
WA_PTR_BALANCE_RULE_STR-HRSPA sy-vline 
WA_PTR_BALANCE_RULE_STR-AGELO sy-vline 
WA_PTR_BALANCE_RULE_STR-AGEHI sy-vline 
WA_PTR_BALANCE_RULE_STR-AGEUN sy-vline 
WA_PTR_BALANCE_RULE_STR-CKPNT sy-vline 
WA_PTR_BALANCE_RULE_STR-CKPMO sy-vline 
WA_PTR_BALANCE_RULE_STR-ZTART sy-vline 
WA_PTR_BALANCE_RULE_STR-CPMOD sy-vline 
WA_PTR_BALANCE_RULE_STR-CPPMO sy-vline 
WA_PTR_BALANCE_RULE_STR-CPPPR sy-vline 
WA_PTR_BALANCE_RULE_STR-CPNUM sy-vline 
WA_PTR_BALANCE_RULE_STR-CPUNI sy-vline 
WA_PTR_BALANCE_RULE_STR-ZASTO sy-vline 
WA_PTR_BALANCE_RULE_STR-XZEST sy-vline 
WA_PTR_BALANCE_RULE_STR-BLCUT sy-vline 
WA_PTR_BALANCE_RULE_STR-CZTRT sy-vline 
WA_PTR_BALANCE_RULE_STR-XZEZT sy-vline 
WA_PTR_BALANCE_RULE_STR-VRZZT sy-vline 
WA_PTR_BALANCE_RULE_STR-LGART sy-vline 
WA_PTR_BALANCE_RULE_STR-IFTYP sy-vline 
WA_PTR_BALANCE_RULE_STR-VRZLG sy-vline 
WA_PTR_BALANCE_RULE_STR-CMESS sy-vline 
WA_PTR_BALANCE_RULE_STR-MESTY sy-vline 
WA_PTR_BALANCE_RULE_STR-RMESS sy-vline 
WA_PTR_BALANCE_RULE_STR-TOLER sy-vline 
WA_PTR_BALANCE_RULE_STR-TLPRC sy-vline 
WA_PTR_BALANCE_RULE_STR-METHO sy-vline      INTO ld_text SEPARATED BY SPACE.

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