ABAP Select data from SAP table MDHEADER 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 MDHEADER 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 MDHEADER. 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 MDHEADER 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_MDHEADER TYPE STANDARD TABLE OF MDHEADER,
WA_MDHEADER TYPE MDHEADER,
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: <MDHEADER> TYPE MDHEADER.
*Process all fields in table header/work area as string values
PERFORM process_as_string_field_values CHANGING wa_MDHEADER.
SELECT *
*restrict ABAP select to first 10 rows
UP TO 10 ROWS
FROM MDHEADER
INTO TABLE IT_MDHEADER.
*Select data and declare internal table using in-line method @DATA
*SELECT *
* FROM MDHEADER
* INTO TABLE @DATA(IT_MDHEADER2).
*--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_MDHEADER INDEX 1 INTO DATA(WA_MDHEADER2).
*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_MDHEADER ASSIGNING <MDHEADER>.
*To update a field value using a field symbol simply change the value via the field symbol pointer<MDHEADER>-EXMAT = 1.
<MDHEADER>-MATNR = 1.
<MDHEADER>-WERKS = 1.
<MDHEADER>-BERID = 1.
<MDHEADER>-MAKTX = 1.
ENDLOOP. LOOP AT IT_MDHEADER INTO WA_MDHEADER. *Write horizonal line to screen report. WRITE:/ sy-uline. *Write selected data to screen/report before conversion. WRITE:/ sy-vline, WA_MDHEADER-TXWRK, sy-vline,
WA_MDHEADER-BERTX, sy-vline,
WA_MDHEADER-PLSCN, sy-vline,
WA_MDHEADER-MEINS, sy-vline,
WA_MDHEADER-AUSZ1, sy-vline,
WA_MDHEADER-AUSZ2, sy-vline.
ENDLOOP. *Add any further fields from structure WA_MDHEADER 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_MDHEADER 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_MDHEADER INTO WA_MDHEADER. *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.
*Conversion exit MATN1, internal->external for field MATNR CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT' EXPORTING input = WA_MDHEADER-MATNR IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_MDHEADER-MATNR.
WRITE:/ 'New Value:', ld_input.
*Conversion exit CUNIT, internal->external for field MEINS CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT' EXPORTING input = WA_MDHEADER-MEINS IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_MDHEADER-MEINS.
WRITE:/ 'New Value:', ld_input.
ENDFORM. *&---------------------------------------------------------------------* *& Form process_as_string_field_values *&---------------------------------------------------------------------* FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO. TYPES: BEGIN OF T_MDHEADER_STR,
EXMAT TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
BERID TYPE STRING,
MAKTX TYPE STRING,
TXWRK TYPE STRING,
BERTX TYPE STRING,
PLSCN TYPE STRING,
MEINS TYPE STRING,
AUSZ1 TYPE STRING,
AUSZ2 TYPE STRING,
AUSZ3 TYPE STRING,
AUSZ4 TYPE STRING,
AUSZ5 TYPE STRING,
AUSZ6 TYPE STRING,
AUSZ7 TYPE STRING,
AUSZ8 TYPE STRING,
BERW2 TYPE STRING,
BERW4 TYPE STRING,
BERW1 TYPE STRING,
SGSRC TYPE STRING,
DSDAT TYPE STRING,
BDBKZ TYPE STRING,
MAABC TYPE STRING,
BESKZ TYPE STRING,
ESOBS TYPE STRING,
EXPAND TYPE STRING,
INFO TYPE STRING,END OF T_EKKO_STR. DATA: WA_MDHEADER_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_MDHEADER_STR-EXMAT sy-vline
WA_MDHEADER_STR-MATNR sy-vline
WA_MDHEADER_STR-WERKS sy-vline
WA_MDHEADER_STR-BERID sy-vline
WA_MDHEADER_STR-MAKTX sy-vline
WA_MDHEADER_STR-TXWRK sy-vline
WA_MDHEADER_STR-BERTX sy-vline
WA_MDHEADER_STR-PLSCN sy-vline
WA_MDHEADER_STR-MEINS sy-vline
WA_MDHEADER_STR-AUSZ1 sy-vline
WA_MDHEADER_STR-AUSZ2 sy-vline
WA_MDHEADER_STR-AUSZ3 sy-vline
WA_MDHEADER_STR-AUSZ4 sy-vline
WA_MDHEADER_STR-AUSZ5 sy-vline
WA_MDHEADER_STR-AUSZ6 sy-vline
WA_MDHEADER_STR-AUSZ7 sy-vline
WA_MDHEADER_STR-AUSZ8 sy-vline
WA_MDHEADER_STR-BERW2 sy-vline
WA_MDHEADER_STR-BERW4 sy-vline
WA_MDHEADER_STR-BERW1 sy-vline
WA_MDHEADER_STR-SGSRC sy-vline
WA_MDHEADER_STR-DSDAT sy-vline
WA_MDHEADER_STR-BDBKZ sy-vline
WA_MDHEADER_STR-MAABC sy-vline
WA_MDHEADER_STR-BESKZ sy-vline
WA_MDHEADER_STR-ESOBS sy-vline
WA_MDHEADER_STR-EXPAND sy-vline
WA_MDHEADER_STR-INFO sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.