ABAP Select data from SAP table AJM_S_METADATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AJM_S_METADATA
*  INTO TABLE @DATA(IT_AJM_S_METADATA2).
*--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_AJM_S_METADATA INDEX 1 INTO DATA(WA_AJM_S_METADATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AJM_S_METADATA>-MANDT = 1.
<AJM_S_METADATA>-JOBNAME = 1.
<AJM_S_METADATA>-TBTCP_STEP = 1.
<AJM_S_METADATA>-JOBCOUNT = 1.
<AJM_S_METADATA>-STEPCOUNT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AJM_S_METADATA-SDLSTRTDT, sy-vline,
  WA_AJM_S_METADATA-SDLSTRTTM, sy-vline,
  WA_AJM_S_METADATA-SDLDATE, sy-vline,
  WA_AJM_S_METADATA-SDLTIME, sy-vline,
  WA_AJM_S_METADATA-SDLUNAME, sy-vline,
  WA_AJM_S_METADATA-LASTCHDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AJM_S_METADATA 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_AJM_S_METADATA 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_AJM_S_METADATA INTO WA_AJM_S_METADATA.


*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_AJM_S_METADATA_STR, 
MANDT TYPE STRING,
JOBNAME TYPE STRING,
TBTCP_STEP TYPE STRING,
JOBCOUNT TYPE STRING,
STEPCOUNT TYPE STRING,
SDLSTRTDT TYPE STRING,
SDLSTRTTM TYPE STRING,
SDLDATE TYPE STRING,
SDLTIME TYPE STRING,
SDLUNAME TYPE STRING,
LASTCHDATE TYPE STRING,
LASTCHTIME TYPE STRING,
LASTCHNAME TYPE STRING,
RELUNAME TYPE STRING,
PRDMINS TYPE STRING,
PRDHOURS TYPE STRING,
PRDDAYS TYPE STRING,
PRDWEEKS TYPE STRING,
PRDMONTHS TYPE STRING,
PERIODIC TYPE STRING,
STATUS TYPE STRING,
AUTHCKNAM TYPE STRING,
AUTHCKMAN TYPE STRING,
JOBLOG TYPE STRING,
LASTSTRTDT TYPE STRING,
LASTSTRTTM TYPE STRING,
CALENDARID TYPE STRING,
PROGNAME TYPE STRING,
STEP_SDLDATE TYPE STRING,
STEP_SDLTIME TYPE STRING,
STEP_SDLUNAME TYPE STRING,
STEP_AUTHCKNAM TYPE STRING,
VARIANT TYPE STRING,
JOB_TEMPLATE_NAME TYPE STRING,
JOB_TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AJM_S_METADATA_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_AJM_S_METADATA_STR-MANDT sy-vline 
WA_AJM_S_METADATA_STR-JOBNAME sy-vline 
WA_AJM_S_METADATA_STR-TBTCP_STEP sy-vline 
WA_AJM_S_METADATA_STR-JOBCOUNT sy-vline 
WA_AJM_S_METADATA_STR-STEPCOUNT sy-vline 
WA_AJM_S_METADATA_STR-SDLSTRTDT sy-vline 
WA_AJM_S_METADATA_STR-SDLSTRTTM sy-vline 
WA_AJM_S_METADATA_STR-SDLDATE sy-vline 
WA_AJM_S_METADATA_STR-SDLTIME sy-vline 
WA_AJM_S_METADATA_STR-SDLUNAME sy-vline 
WA_AJM_S_METADATA_STR-LASTCHDATE sy-vline 
WA_AJM_S_METADATA_STR-LASTCHTIME sy-vline 
WA_AJM_S_METADATA_STR-LASTCHNAME sy-vline 
WA_AJM_S_METADATA_STR-RELUNAME sy-vline 
WA_AJM_S_METADATA_STR-PRDMINS sy-vline 
WA_AJM_S_METADATA_STR-PRDHOURS sy-vline 
WA_AJM_S_METADATA_STR-PRDDAYS sy-vline 
WA_AJM_S_METADATA_STR-PRDWEEKS sy-vline 
WA_AJM_S_METADATA_STR-PRDMONTHS sy-vline 
WA_AJM_S_METADATA_STR-PERIODIC sy-vline 
WA_AJM_S_METADATA_STR-STATUS sy-vline 
WA_AJM_S_METADATA_STR-AUTHCKNAM sy-vline 
WA_AJM_S_METADATA_STR-AUTHCKMAN sy-vline 
WA_AJM_S_METADATA_STR-JOBLOG sy-vline 
WA_AJM_S_METADATA_STR-LASTSTRTDT sy-vline 
WA_AJM_S_METADATA_STR-LASTSTRTTM sy-vline 
WA_AJM_S_METADATA_STR-CALENDARID sy-vline 
WA_AJM_S_METADATA_STR-PROGNAME sy-vline 
WA_AJM_S_METADATA_STR-STEP_SDLDATE sy-vline 
WA_AJM_S_METADATA_STR-STEP_SDLTIME sy-vline 
WA_AJM_S_METADATA_STR-STEP_SDLUNAME sy-vline 
WA_AJM_S_METADATA_STR-STEP_AUTHCKNAM sy-vline 
WA_AJM_S_METADATA_STR-VARIANT sy-vline 
WA_AJM_S_METADATA_STR-JOB_TEMPLATE_NAME sy-vline 
WA_AJM_S_METADATA_STR-JOB_TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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