ABAP Select data from SAP table PPHMRPLOG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PPHMRPLOG
*  INTO TABLE @DATA(IT_PPHMRPLOG2).
*--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_PPHMRPLOG INDEX 1 INTO DATA(WA_PPHMRPLOG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PPHMRPLOG>-MANDT = 1.
<PPHMRPLOG>-UUID = 1.
<PPHMRPLOG>-START_TIME = 1.
<PPHMRPLOG>-END_TIME = 1.
<PPHMRPLOG>-UNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PPHMRPLOG-REGEN, sy-vline,
  WA_PPHMRPLOG-COMPS, sy-vline,
  WA_PPHMRPLOG-PLALL, sy-vline,
  WA_PPHMRPLOG-TRANS, sy-vline,
  WA_PPHMRPLOG-PLMOD, sy-vline,
  WA_PPHMRPLOG-VERTR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PPHMRPLOG 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_PPHMRPLOG 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_PPHMRPLOG INTO WA_PPHMRPLOG.


*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_PPHMRPLOG_STR, 
MANDT TYPE STRING,
UUID TYPE STRING,
START_TIME TYPE STRING,
END_TIME TYPE STRING,
UNAME TYPE STRING,
REGEN TYPE STRING,
COMPS TYPE STRING,
PLALL TYPE STRING,
TRANS TYPE STRING,
PLMOD TYPE STRING,
VERTR TYPE STRING,
SCOPE TYPE STRING,
TRMPL TYPE STRING,
DISPD TYPE STRING,
WO_AUTH TYPE STRING,
NOT_LOCKED TYPE STRING,
SELSTRING TYPE STRING,
MRP_COMMENT TYPE STRING,
ERROR_STRING TYPE STRING,
JOBCOUNT TYPE STRING,
JOBNAME TYPE STRING,
STEPCOUNT TYPE STRING,
TIME_OVERALL_HDR TYPE STRING,
TRANSACTION_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PPHMRPLOG_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_PPHMRPLOG_STR-MANDT sy-vline 
WA_PPHMRPLOG_STR-UUID sy-vline 
WA_PPHMRPLOG_STR-START_TIME sy-vline 
WA_PPHMRPLOG_STR-END_TIME sy-vline 
WA_PPHMRPLOG_STR-UNAME sy-vline 
WA_PPHMRPLOG_STR-REGEN sy-vline 
WA_PPHMRPLOG_STR-COMPS sy-vline 
WA_PPHMRPLOG_STR-PLALL sy-vline 
WA_PPHMRPLOG_STR-TRANS sy-vline 
WA_PPHMRPLOG_STR-PLMOD sy-vline 
WA_PPHMRPLOG_STR-VERTR sy-vline 
WA_PPHMRPLOG_STR-SCOPE sy-vline 
WA_PPHMRPLOG_STR-TRMPL sy-vline 
WA_PPHMRPLOG_STR-DISPD sy-vline 
WA_PPHMRPLOG_STR-WO_AUTH sy-vline 
WA_PPHMRPLOG_STR-NOT_LOCKED sy-vline 
WA_PPHMRPLOG_STR-SELSTRING sy-vline 
WA_PPHMRPLOG_STR-MRP_COMMENT sy-vline 
WA_PPHMRPLOG_STR-ERROR_STRING sy-vline 
WA_PPHMRPLOG_STR-JOBCOUNT sy-vline 
WA_PPHMRPLOG_STR-JOBNAME sy-vline 
WA_PPHMRPLOG_STR-STEPCOUNT sy-vline 
WA_PPHMRPLOG_STR-TIME_OVERALL_HDR sy-vline 
WA_PPHMRPLOG_STR-TRANSACTION_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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