ABAP Select data from SAP table PTM_CLUSTER_B1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PTM_CLUSTER_B1 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 PTM_CLUSTER_B1. 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 PTM_CLUSTER_B1 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_PTM_CLUSTER_B1 TYPE STANDARD TABLE OF PTM_CLUSTER_B1,
      WA_PTM_CLUSTER_B1 TYPE PTM_CLUSTER_B1,
      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: <PTM_CLUSTER_B1> TYPE PTM_CLUSTER_B1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PTM_CLUSTER_B1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PTM_CLUSTER_B1
  INTO TABLE IT_PTM_CLUSTER_B1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PTM_CLUSTER_B1
*  INTO TABLE @DATA(IT_PTM_CLUSTER_B12).
*--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_PTM_CLUSTER_B1 INDEX 1 INTO DATA(WA_PTM_CLUSTER_B12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PTM_CLUSTER_B1 ASSIGNING <PTM_CLUSTER_B1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PTM_CLUSTER_B1>-PERNR = 1.
<PTM_CLUSTER_B1>-VERSION = 1.
<PTM_CLUSTER_B1>-SAPRL = 1.
<PTM_CLUSTER_B1>-NUMBER = 1.
<PTM_CLUSTER_B1>-UNAME = 1.

ENDLOOP.

LOOP AT IT_PTM_CLUSTER_B1 INTO WA_PTM_CLUSTER_B1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PTM_CLUSTER_B1-DATUM, sy-vline,
  WA_PTM_CLUSTER_B1-UZEIT, sy-vline,
  WA_PTM_CLUSTER_B1-PGMID, sy-vline,
  WA_PTM_CLUSTER_B1-SCHEM, sy-vline,
  WA_PTM_CLUSTER_B1-QT, sy-vline,
  WA_PTM_CLUSTER_B1-DNEVA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PTM_CLUSTER_B1 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_PTM_CLUSTER_B1 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_PTM_CLUSTER_B1 INTO WA_PTM_CLUSTER_B1.


*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_PTM_CLUSTER_B1_STR, 
PERNR TYPE STRING,
VERSION TYPE STRING,
SAPRL TYPE STRING,
NUMBER TYPE STRING,
UNAME TYPE STRING,
DATUM TYPE STRING,
UZEIT TYPE STRING,
PGMID TYPE STRING,
SCHEM TYPE STRING,
QT TYPE STRING,
DNEVA TYPE STRING,
COGOS TYPE STRING,
PRIDX TYPE STRING,
LDAYD TYPE STRING,
BLSTD TYPE STRING,
ELSTD TYPE STRING,
FTKLA TYPE STRING,
TPKLA TYPE STRING,
TAGTY TYPE STRING,
BMTB1 TYPE STRING,
BDERR TYPE STRING,
STOPD TYPE STRING,
NT1 TYPE STRING,
NT2 TYPE STRING,
IFT1 TYPE STRING,
IFT2 TYPE STRING,
ERT TYPE STRING,
NCT TYPE STRING,
ST TYPE STRING,
ITP1 TYPE STRING,
ITP7 TYPE STRING,
ITP50 TYPE STRING,
PDPPM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PTM_CLUSTER_B1_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_PTM_CLUSTER_B1_STR-PERNR sy-vline 
WA_PTM_CLUSTER_B1_STR-VERSION sy-vline 
WA_PTM_CLUSTER_B1_STR-SAPRL sy-vline 
WA_PTM_CLUSTER_B1_STR-NUMBER sy-vline 
WA_PTM_CLUSTER_B1_STR-UNAME sy-vline 
WA_PTM_CLUSTER_B1_STR-DATUM sy-vline 
WA_PTM_CLUSTER_B1_STR-UZEIT sy-vline 
WA_PTM_CLUSTER_B1_STR-PGMID sy-vline 
WA_PTM_CLUSTER_B1_STR-SCHEM sy-vline 
WA_PTM_CLUSTER_B1_STR-QT sy-vline 
WA_PTM_CLUSTER_B1_STR-DNEVA sy-vline 
WA_PTM_CLUSTER_B1_STR-COGOS sy-vline 
WA_PTM_CLUSTER_B1_STR-PRIDX sy-vline 
WA_PTM_CLUSTER_B1_STR-LDAYD sy-vline 
WA_PTM_CLUSTER_B1_STR-BLSTD sy-vline 
WA_PTM_CLUSTER_B1_STR-ELSTD sy-vline 
WA_PTM_CLUSTER_B1_STR-FTKLA sy-vline 
WA_PTM_CLUSTER_B1_STR-TPKLA sy-vline 
WA_PTM_CLUSTER_B1_STR-TAGTY sy-vline 
WA_PTM_CLUSTER_B1_STR-BMTB1 sy-vline 
WA_PTM_CLUSTER_B1_STR-BDERR sy-vline 
WA_PTM_CLUSTER_B1_STR-STOPD sy-vline 
WA_PTM_CLUSTER_B1_STR-NT1 sy-vline 
WA_PTM_CLUSTER_B1_STR-NT2 sy-vline 
WA_PTM_CLUSTER_B1_STR-IFT1 sy-vline 
WA_PTM_CLUSTER_B1_STR-IFT2 sy-vline 
WA_PTM_CLUSTER_B1_STR-ERT sy-vline 
WA_PTM_CLUSTER_B1_STR-NCT sy-vline 
WA_PTM_CLUSTER_B1_STR-ST sy-vline 
WA_PTM_CLUSTER_B1_STR-ITP1 sy-vline 
WA_PTM_CLUSTER_B1_STR-ITP7 sy-vline 
WA_PTM_CLUSTER_B1_STR-ITP50 sy-vline 
WA_PTM_CLUSTER_B1_STR-PDPPM sy-vline      INTO ld_text SEPARATED BY SPACE.

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