ABAP Select data from SAP table MESYHEADD into internal table
Get Example source ABAP code based on a different SAP table
Below is a number of ABAP code snippets to demonstrate how to select data from SAP MESYHEADD 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 MESYHEADD. 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 MESYHEADD 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_MESYHEADD TYPE STANDARD TABLE OF MESYHEADD, WA_MESYHEADD TYPE MESYHEADD, 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: <MESYHEADD> TYPE MESYHEADD. *Process all fields in table header/work area as string values PERFORM process_as_string_field_values CHANGING wa_MESYHEADD. SELECT * *restrict ABAP select to first 10 rows UP TO 10 ROWS FROM MESYHEADD INTO TABLE IT_MESYHEADD. *Select data and declare internal table using in-line method @DATA *SELECT * * FROM MESYHEADD * INTO TABLE @DATA(IT_MESYHEADD2). *--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_MESYHEADD INDEX 1 INTO DATA(WA_MESYHEADD2). *Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL LOOP AT IT_MESYHEADD ASSIGNING <MESYHEADD>.*To update a field value using a field symbol simply change the value via the field symbol pointer
<MESYHEADD>-MANDT = 1.
<MESYHEADD>-CONT_ID = 1.
<MESYHEADD>-SUBCONT_ID = 1.
<MESYHEADD>-DEVICE_ID = 1.
<MESYHEADD>-OWNER = 1.
ENDLOOP. LOOP AT IT_MESYHEADD INTO WA_MESYHEADD. *Write horizonal line to screen report. WRITE:/ sy-uline. *Write selected data to screen/report before conversion. WRITE:/ sy-vline, WA_MESYHEADD-TYPE, sy-vline,
WA_MESYHEADD-METHOD, sy-vline,
WA_MESYHEADD-PARCONTID, sy-vline,
WA_MESYHEADD-MSGINDEX, sy-vline,
WA_MESYHEADD-MSGTYPE, sy-vline,
WA_MESYHEADD-SERVER_ID, sy-vline.
ENDLOOP. *Add any further fields from structure WA_MESYHEADD 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_MESYHEADD 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_MESYHEADD INTO WA_MESYHEADD. *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_MESYHEADD_STR,
MANDT TYPE STRING,
CONT_ID TYPE STRING,
SUBCONT_ID TYPE STRING,
DEVICE_ID TYPE STRING,
OWNER TYPE STRING,
TYPE TYPE STRING,
METHOD TYPE STRING,
PARCONTID TYPE STRING,
MSGINDEX TYPE STRING,
MSGTYPE TYPE STRING,
SERVER_ID TYPE STRING,
BODY_TYPE TYPE STRING,
BODY_LEN TYPE STRING,
SUBCONTMAX TYPE STRING,
SENDDATE TYPE STRING,
SENDTIME TYPE STRING,
EXEC_DATE TYPE STRING,
EXEC_TIME TYPE STRING,
STATUS TYPE STRING,
ITMLOW TYPE STRING,
ITMHIGH TYPE STRING,END OF T_EKKO_STR. DATA: WA_MESYHEADD_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_MESYHEADD_STR-MANDT sy-vline
WA_MESYHEADD_STR-CONT_ID sy-vline
WA_MESYHEADD_STR-SUBCONT_ID sy-vline
WA_MESYHEADD_STR-DEVICE_ID sy-vline
WA_MESYHEADD_STR-OWNER sy-vline
WA_MESYHEADD_STR-TYPE sy-vline
WA_MESYHEADD_STR-METHOD sy-vline
WA_MESYHEADD_STR-PARCONTID sy-vline
WA_MESYHEADD_STR-MSGINDEX sy-vline
WA_MESYHEADD_STR-MSGTYPE sy-vline
WA_MESYHEADD_STR-SERVER_ID sy-vline
WA_MESYHEADD_STR-BODY_TYPE sy-vline
WA_MESYHEADD_STR-BODY_LEN sy-vline
WA_MESYHEADD_STR-SUBCONTMAX sy-vline
WA_MESYHEADD_STR-SENDDATE sy-vline
WA_MESYHEADD_STR-SENDTIME sy-vline
WA_MESYHEADD_STR-EXEC_DATE sy-vline
WA_MESYHEADD_STR-EXEC_TIME sy-vline
WA_MESYHEADD_STR-STATUS sy-vline
WA_MESYHEADD_STR-ITMLOW sy-vline
WA_MESYHEADD_STR-ITMHIGH sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.