ABAP Select data from SAP table BAPICONTRACT into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPICONTRACT
*  INTO TABLE @DATA(IT_BAPICONTRACT2).
*--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_BAPICONTRACT INDEX 1 INTO DATA(WA_BAPICONTRACT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPICONTRACT>-ITM_NUMBER = 1.
<BAPICONTRACT>-VAL_PER = 1.
<BAPICONTRACT>-VAL_PER_UN = 1.
<BAPICONTRACT>-VAL_PER_CA = 1.
<BAPICONTRACT>-INST_DATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPICONTRACT-ACCEPT_DAT, sy-vline,
  WA_BAPICONTRACT-CON_ST_DAT, sy-vline,
  WA_BAPICONTRACT-CON_SI_DAT, sy-vline,
  WA_BAPICONTRACT-CANC_PROC, sy-vline,
  WA_BAPICONTRACT-CON_EN_ACT, sy-vline,
  WA_BAPICONTRACT-CANC_R_DAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPICONTRACT 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_BAPICONTRACT 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_BAPICONTRACT INTO WA_BAPICONTRACT.


*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_BAPICONTRACT_STR, 
ITM_NUMBER TYPE STRING,
VAL_PER TYPE STRING,
VAL_PER_UN TYPE STRING,
VAL_PER_CA TYPE STRING,
INST_DATE TYPE STRING,
ACCEPT_DAT TYPE STRING,
CON_ST_DAT TYPE STRING,
CON_SI_DAT TYPE STRING,
CANC_PROC TYPE STRING,
CON_EN_ACT TYPE STRING,
CANC_R_DAT TYPE STRING,
R_CANC_DAT TYPE STRING,
CANC_PARTY TYPE STRING,
CANCREASON TYPE STRING,
CON_EN_DAT TYPE STRING,
CANC_DOC TYPE STRING,
CANCDOCDAT TYPE STRING,
CON_ST_RUL TYPE STRING,
DISM_DATE TYPE STRING,
ACTION_DAT TYPE STRING,
ACT_DATRUL TYPE STRING,
CON_EN_RUL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPICONTRACT_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_BAPICONTRACT_STR-ITM_NUMBER sy-vline 
WA_BAPICONTRACT_STR-VAL_PER sy-vline 
WA_BAPICONTRACT_STR-VAL_PER_UN sy-vline 
WA_BAPICONTRACT_STR-VAL_PER_CA sy-vline 
WA_BAPICONTRACT_STR-INST_DATE sy-vline 
WA_BAPICONTRACT_STR-ACCEPT_DAT sy-vline 
WA_BAPICONTRACT_STR-CON_ST_DAT sy-vline 
WA_BAPICONTRACT_STR-CON_SI_DAT sy-vline 
WA_BAPICONTRACT_STR-CANC_PROC sy-vline 
WA_BAPICONTRACT_STR-CON_EN_ACT sy-vline 
WA_BAPICONTRACT_STR-CANC_R_DAT sy-vline 
WA_BAPICONTRACT_STR-R_CANC_DAT sy-vline 
WA_BAPICONTRACT_STR-CANC_PARTY sy-vline 
WA_BAPICONTRACT_STR-CANCREASON sy-vline 
WA_BAPICONTRACT_STR-CON_EN_DAT sy-vline 
WA_BAPICONTRACT_STR-CANC_DOC sy-vline 
WA_BAPICONTRACT_STR-CANCDOCDAT sy-vline 
WA_BAPICONTRACT_STR-CON_ST_RUL sy-vline 
WA_BAPICONTRACT_STR-DISM_DATE sy-vline 
WA_BAPICONTRACT_STR-ACTION_DAT sy-vline 
WA_BAPICONTRACT_STR-ACT_DATRUL sy-vline 
WA_BAPICONTRACT_STR-CON_EN_RUL sy-vline      INTO ld_text SEPARATED BY SPACE.

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