ABAP Select data from SAP table EINV01 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP EINV01 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 EINV01. 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 EINV01 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_EINV01 TYPE STANDARD TABLE OF EINV01,
      WA_EINV01 TYPE EINV01,
      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: <EINV01> TYPE EINV01.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_EINV01.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM EINV01
  INTO TABLE IT_EINV01.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EINV01
*  INTO TABLE @DATA(IT_EINV012).
*--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_EINV01 INDEX 1 INTO DATA(WA_EINV012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_EINV01 ASSIGNING <EINV01>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EINV01>-BLDAT = 1.
<EINV01>-BUDAT = 1.
<EINV01>-FIKEY = 1.
<EINV01>-APERIODIC = 1.
<EINV01>-INV_COMMIT = 1.

ENDLOOP.

LOOP AT IT_EINV01 INTO WA_EINV01.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EINV01-CCOUNTER, sy-vline,
  WA_EINV01-SIMULATED, sy-vline,
  WA_EINV01-NO_UPDATE, sy-vline,
  WA_EINV01-VALIDCHECK, sy-vline,
  WA_EINV01-RELEASE_RUN, sy-vline,
  WA_EINV01-OUTSORTED_AMNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EINV01 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_EINV01 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_EINV01 INTO WA_EINV01.


*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_EINV01_STR, 
BLDAT TYPE STRING,
BUDAT TYPE STRING,
FIKEY TYPE STRING,
APERIODIC TYPE STRING,
INV_COMMIT TYPE STRING,
CCOUNTER TYPE STRING,
SIMULATED TYPE STRING,
NO_UPDATE TYPE STRING,
VALIDCHECK TYPE STRING,
RELEASE_RUN TYPE STRING,
OUTSORTED_AMNT TYPE STRING,
OUTSORTED_CURR TYPE STRING,
NOJOINCHECK TYPE STRING,
SIM_DOC_INVOICE TYPE STRING,
SOLLDAT TYPE STRING,
FAEDN_BIS TYPE STRING,
FAEDN_KARENZ TYPE STRING,
KZABSVER TYPE STRING,
HERKF TYPE STRING,
ERGRD TYPE STRING,
INV_PROCESS TYPE STRING,
EXPERT_MODE TYPE STRING,
EINZEL TYPE STRING,
RTCHECK TYPE STRING,
RTDATE TYPE STRING,
RTTIME TYPE STRING,
EXLOG TYPE STRING,
ABP_SAVE TYPE STRING,
DIALOG TYPE STRING,
RUN_NO TYPE STRING,
BRANCH TYPE STRING,
OSB_SIMULATION TYPE STRING,
TCODE TYPE STRING,
ORIG_INV_UNIT TYPE STRING,
CON_BILL_PER TYPE STRING,
NO_OP_ENQUEUE TYPE STRING,
RUNKEY TYPE STRING,
LEAVE_FIKEY_OPEN TYPE STRING,
NO_STATISTICS TYPE STRING,
NO_LOG_SAVE TYPE STRING,
NO_ISU2CI_TRANSFER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EINV01_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_EINV01_STR-BLDAT sy-vline 
WA_EINV01_STR-BUDAT sy-vline 
WA_EINV01_STR-FIKEY sy-vline 
WA_EINV01_STR-APERIODIC sy-vline 
WA_EINV01_STR-INV_COMMIT sy-vline 
WA_EINV01_STR-CCOUNTER sy-vline 
WA_EINV01_STR-SIMULATED sy-vline 
WA_EINV01_STR-NO_UPDATE sy-vline 
WA_EINV01_STR-VALIDCHECK sy-vline 
WA_EINV01_STR-RELEASE_RUN sy-vline 
WA_EINV01_STR-OUTSORTED_AMNT sy-vline 
WA_EINV01_STR-OUTSORTED_CURR sy-vline 
WA_EINV01_STR-NOJOINCHECK sy-vline 
WA_EINV01_STR-SIM_DOC_INVOICE sy-vline 
WA_EINV01_STR-SOLLDAT sy-vline 
WA_EINV01_STR-FAEDN_BIS sy-vline 
WA_EINV01_STR-FAEDN_KARENZ sy-vline 
WA_EINV01_STR-KZABSVER sy-vline 
WA_EINV01_STR-HERKF sy-vline 
WA_EINV01_STR-ERGRD sy-vline 
WA_EINV01_STR-INV_PROCESS sy-vline 
WA_EINV01_STR-EXPERT_MODE sy-vline 
WA_EINV01_STR-EINZEL sy-vline 
WA_EINV01_STR-RTCHECK sy-vline 
WA_EINV01_STR-RTDATE sy-vline 
WA_EINV01_STR-RTTIME sy-vline 
WA_EINV01_STR-EXLOG sy-vline 
WA_EINV01_STR-ABP_SAVE sy-vline 
WA_EINV01_STR-DIALOG sy-vline 
WA_EINV01_STR-RUN_NO sy-vline 
WA_EINV01_STR-BRANCH sy-vline 
WA_EINV01_STR-OSB_SIMULATION sy-vline 
WA_EINV01_STR-TCODE sy-vline 
WA_EINV01_STR-ORIG_INV_UNIT sy-vline 
WA_EINV01_STR-CON_BILL_PER sy-vline 
WA_EINV01_STR-NO_OP_ENQUEUE sy-vline 
WA_EINV01_STR-RUNKEY sy-vline 
WA_EINV01_STR-LEAVE_FIKEY_OPEN sy-vline 
WA_EINV01_STR-NO_STATISTICS sy-vline 
WA_EINV01_STR-NO_LOG_SAVE sy-vline 
WA_EINV01_STR-NO_ISU2CI_TRANSFER sy-vline      INTO ld_text SEPARATED BY SPACE.

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