ABAP Select data from SAP table PDV_MASS_ACT_SEQ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PDV_MASS_ACT_SEQ
*  INTO TABLE @DATA(IT_PDV_MASS_ACT_SEQ2).
*--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_PDV_MASS_ACT_SEQ INDEX 1 INTO DATA(WA_PDV_MASS_ACT_SEQ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PDV_MASS_ACT_SEQ>-PRODUCT = 1.
<PDV_MASS_ACT_SEQ>-LOCATION = 1.
<PDV_MASS_ACT_SEQ>-PPE_NAME = 1.
<PDV_MASS_ACT_SEQ>-PPEGUID = 1.
<PDV_MASS_ACT_SEQ>-ROUTING = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PDV_MASS_ACT_SEQ-ACTHDR_GUID, sy-vline,
  WA_PDV_MASS_ACT_SEQ-OPRNAME, sy-vline,
  WA_PDV_MASS_ACT_SEQ-OPRGUID, sy-vline,
  WA_PDV_MASS_ACT_SEQ-PRED_ACT, sy-vline,
  WA_PDV_MASS_ACT_SEQ-PRED_GUID, sy-vline,
  WA_PDV_MASS_ACT_SEQ-SUCC_ACT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PDV_MASS_ACT_SEQ 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_PDV_MASS_ACT_SEQ 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_PDV_MASS_ACT_SEQ INTO WA_PDV_MASS_ACT_SEQ.


*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 PRODUCT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PDV_MASS_ACT_SEQ-PRODUCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PDV_MASS_ACT_SEQ-PRODUCT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field J_TUNIT_MIN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PDV_MASS_ACT_SEQ-J_TUNIT_MIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PDV_MASS_ACT_SEQ-J_TUNIT_MIN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field M_TUNIT_MAX
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PDV_MASS_ACT_SEQ-M_TUNIT_MAX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PDV_MASS_ACT_SEQ-M_TUNIT_MAX.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field P_TUNIT_AVG
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PDV_MASS_ACT_SEQ-P_TUNIT_AVG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PDV_MASS_ACT_SEQ-P_TUNIT_AVG.
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_PDV_MASS_ACT_SEQ_STR, 
PRODUCT TYPE STRING,
LOCATION TYPE STRING,
PPE_NAME TYPE STRING,
PPEGUID TYPE STRING,
ROUTING TYPE STRING,
ACTHDR_GUID TYPE STRING,
OPRNAME TYPE STRING,
OPRGUID TYPE STRING,
PRED_ACT TYPE STRING,
PRED_GUID TYPE STRING,
SUCC_ACT TYPE STRING,
SUCC_GUID TYPE STRING,
PRGUID TYPE STRING,
A_CREADAT TYPE STRING,
B_CREABY TYPE STRING,
C_CHNGDAT TYPE STRING,
D_CHNGBY TYPE STRING,
E_CRTYPE TYPE STRING,
F_COVER_FLG TYPE STRING,
G_COUPLE_TYPE TYPE STRING,
H_MATFLOW TYPE STRING,
I_TRTIME_MIN TYPE STRING,
J_TUNIT_MIN TYPE STRING,
K_TUSE_MIN TYPE STRING,
L_TRTIME_MAX TYPE STRING,
M_TUNIT_MAX TYPE STRING,
N_TUSE_MAX TYPE STRING,
O_TRTIME_AVG TYPE STRING,
P_TUNIT_AVG TYPE STRING,
Q_SCHED_BY_SUCC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PDV_MASS_ACT_SEQ_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_PDV_MASS_ACT_SEQ_STR-PRODUCT sy-vline 
WA_PDV_MASS_ACT_SEQ_STR-LOCATION sy-vline 
WA_PDV_MASS_ACT_SEQ_STR-PPE_NAME sy-vline 
WA_PDV_MASS_ACT_SEQ_STR-PPEGUID sy-vline 
WA_PDV_MASS_ACT_SEQ_STR-ROUTING sy-vline 
WA_PDV_MASS_ACT_SEQ_STR-ACTHDR_GUID sy-vline 
WA_PDV_MASS_ACT_SEQ_STR-OPRNAME sy-vline 
WA_PDV_MASS_ACT_SEQ_STR-OPRGUID sy-vline 
WA_PDV_MASS_ACT_SEQ_STR-PRED_ACT sy-vline 
WA_PDV_MASS_ACT_SEQ_STR-PRED_GUID sy-vline 
WA_PDV_MASS_ACT_SEQ_STR-SUCC_ACT sy-vline 
WA_PDV_MASS_ACT_SEQ_STR-SUCC_GUID sy-vline 
WA_PDV_MASS_ACT_SEQ_STR-PRGUID sy-vline 
WA_PDV_MASS_ACT_SEQ_STR-A_CREADAT sy-vline 
WA_PDV_MASS_ACT_SEQ_STR-B_CREABY sy-vline 
WA_PDV_MASS_ACT_SEQ_STR-C_CHNGDAT sy-vline 
WA_PDV_MASS_ACT_SEQ_STR-D_CHNGBY sy-vline 
WA_PDV_MASS_ACT_SEQ_STR-E_CRTYPE sy-vline 
WA_PDV_MASS_ACT_SEQ_STR-F_COVER_FLG sy-vline 
WA_PDV_MASS_ACT_SEQ_STR-G_COUPLE_TYPE sy-vline 
WA_PDV_MASS_ACT_SEQ_STR-H_MATFLOW sy-vline 
WA_PDV_MASS_ACT_SEQ_STR-I_TRTIME_MIN sy-vline 
WA_PDV_MASS_ACT_SEQ_STR-J_TUNIT_MIN sy-vline 
WA_PDV_MASS_ACT_SEQ_STR-K_TUSE_MIN sy-vline 
WA_PDV_MASS_ACT_SEQ_STR-L_TRTIME_MAX sy-vline 
WA_PDV_MASS_ACT_SEQ_STR-M_TUNIT_MAX sy-vline 
WA_PDV_MASS_ACT_SEQ_STR-N_TUSE_MAX sy-vline 
WA_PDV_MASS_ACT_SEQ_STR-O_TRTIME_AVG sy-vline 
WA_PDV_MASS_ACT_SEQ_STR-P_TUNIT_AVG sy-vline 
WA_PDV_MASS_ACT_SEQ_STR-Q_SCHED_BY_SUCC sy-vline      INTO ld_text SEPARATED BY SPACE.

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