ABAP Select data from SAP table P21_PS_MEGB_A10 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 P21_PS_MEGB_A10 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 P21_PS_MEGB_A10. 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 P21_PS_MEGB_A10 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_P21_PS_MEGB_A10 TYPE STANDARD TABLE OF P21_PS_MEGB_A10, WA_P21_PS_MEGB_A10 TYPE P21_PS_MEGB_A10, 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: <P21_PS_MEGB_A10> TYPE P21_PS_MEGB_A10. *Process all fields in table header/work area as string values PERFORM process_as_string_field_values CHANGING wa_P21_PS_MEGB_A10. SELECT * *restrict ABAP select to first 10 rows UP TO 10 ROWS FROM P21_PS_MEGB_A10 INTO TABLE IT_P21_PS_MEGB_A10. *Select data and declare internal table using in-line method @DATA *SELECT * * FROM P21_PS_MEGB_A10 * INTO TABLE @DATA(IT_P21_PS_MEGB_A102). *--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_P21_PS_MEGB_A10 INDEX 1 INTO DATA(WA_P21_PS_MEGB_A102). *Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL LOOP AT IT_P21_PS_MEGB_A10 ASSIGNING <P21_PS_MEGB_A10>.*To update a field value using a field symbol simply change the value via the field symbol pointer
<P21_PS_MEGB_A10>-STRNR = 1.
<P21_PS_MEGB_A10>-IS_STORNO = 1.
<P21_PS_MEGB_A10>-PERNR = 1.
<P21_PS_MEGB_A10>-BEGDA = 1.
<P21_PS_MEGB_A10>-ID = 1.
ENDLOOP. LOOP AT IT_P21_PS_MEGB_A10 INTO WA_P21_PS_MEGB_A10. *Write horizonal line to screen report. WRITE:/ sy-uline. *Write selected data to screen/report before conversion. WRITE:/ sy-vline, WA_P21_PS_MEGB_A10-SORSZ, sy-vline,
WA_P21_PS_MEGB_A10-AKTUALIS, sy-vline,
WA_P21_PS_MEGB_A10-AGREN, sy-vline,
WA_P21_PS_MEGB_A10-EUHOZ, sy-vline,
WA_P21_PS_MEGB_A10-ANREN, sy-vline,
WA_P21_PS_MEGB_A10-ANKRB, sy-vline.
ENDLOOP. *Add any further fields from structure WA_P21_PS_MEGB_A10 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_P21_PS_MEGB_A10 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_P21_PS_MEGB_A10 INTO WA_P21_PS_MEGB_A10. *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 GJAHR, internal->external for field EV CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT' EXPORTING input = WA_P21_PS_MEGB_A10-EV IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_P21_PS_MEGB_A10-EV.
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_P21_PS_MEGB_A10_STR,
STRNR TYPE STRING,
IS_STORNO TYPE STRING,
PERNR TYPE STRING,
BEGDA TYPE STRING,
ID TYPE STRING,
SORSZ TYPE STRING,
AKTUALIS TYPE STRING,
AGREN TYPE STRING,
EUHOZ TYPE STRING,
ANREN TYPE STRING,
ANKRB TYPE STRING,
ANKRA TYPE STRING,
BER_INFTY TYPE STRING,
D_SZAMF TYPE STRING,
D_UTAL TYPE STRING,
D_STORNO TYPE STRING,
STORNO_TIP TYPE STRING,
KISOSSZ TYPE STRING,
WAERS TYPE STRING,
N_ORASZAM TYPE STRING,
W_ORADIJ TYPE STRING,
W_MUNKADIJ TYPE STRING,
W_M_KOLTSEG TYPE STRING,
W_JOGDIJ TYPE STRING,
W_J_KOLTSEG TYPE STRING,
KJOGDIJ_ADOALAP TYPE STRING,
BR_NAPI_MNK TYPE STRING,
NAPIALAP TYPE STRING,
EV TYPE STRING,
FIRST TYPE STRING,
LAST TYPE STRING,
NUM_OF_DAYS TYPE STRING,END OF T_EKKO_STR. DATA: WA_P21_PS_MEGB_A10_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_P21_PS_MEGB_A10_STR-STRNR sy-vline
WA_P21_PS_MEGB_A10_STR-IS_STORNO sy-vline
WA_P21_PS_MEGB_A10_STR-PERNR sy-vline
WA_P21_PS_MEGB_A10_STR-BEGDA sy-vline
WA_P21_PS_MEGB_A10_STR-ID sy-vline
WA_P21_PS_MEGB_A10_STR-SORSZ sy-vline
WA_P21_PS_MEGB_A10_STR-AKTUALIS sy-vline
WA_P21_PS_MEGB_A10_STR-AGREN sy-vline
WA_P21_PS_MEGB_A10_STR-EUHOZ sy-vline
WA_P21_PS_MEGB_A10_STR-ANREN sy-vline
WA_P21_PS_MEGB_A10_STR-ANKRB sy-vline
WA_P21_PS_MEGB_A10_STR-ANKRA sy-vline
WA_P21_PS_MEGB_A10_STR-BER_INFTY sy-vline
WA_P21_PS_MEGB_A10_STR-D_SZAMF sy-vline
WA_P21_PS_MEGB_A10_STR-D_UTAL sy-vline
WA_P21_PS_MEGB_A10_STR-D_STORNO sy-vline
WA_P21_PS_MEGB_A10_STR-STORNO_TIP sy-vline
WA_P21_PS_MEGB_A10_STR-KISOSSZ sy-vline
WA_P21_PS_MEGB_A10_STR-WAERS sy-vline
WA_P21_PS_MEGB_A10_STR-N_ORASZAM sy-vline
WA_P21_PS_MEGB_A10_STR-W_ORADIJ sy-vline
WA_P21_PS_MEGB_A10_STR-W_MUNKADIJ sy-vline
WA_P21_PS_MEGB_A10_STR-W_M_KOLTSEG sy-vline
WA_P21_PS_MEGB_A10_STR-W_JOGDIJ sy-vline
WA_P21_PS_MEGB_A10_STR-W_J_KOLTSEG sy-vline
WA_P21_PS_MEGB_A10_STR-KJOGDIJ_ADOALAP sy-vline
WA_P21_PS_MEGB_A10_STR-BR_NAPI_MNK sy-vline
WA_P21_PS_MEGB_A10_STR-NAPIALAP sy-vline
WA_P21_PS_MEGB_A10_STR-EV sy-vline
WA_P21_PS_MEGB_A10_STR-FIRST sy-vline
WA_P21_PS_MEGB_A10_STR-LAST sy-vline
WA_P21_PS_MEGB_A10_STR-NUM_OF_DAYS sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.