ABAP Select data from SAP table ESH_U_SCHEDAGRMT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ESH_U_SCHEDAGRMT
*  INTO TABLE @DATA(IT_ESH_U_SCHEDAGRMT2).
*--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_ESH_U_SCHEDAGRMT INDEX 1 INTO DATA(WA_ESH_U_SCHEDAGRMT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ESH_U_SCHEDAGRMT>-MANDT = 1.
<ESH_U_SCHEDAGRMT>-SCHEDULINGAGREEMENT = 1.
<ESH_U_SCHEDAGRMT>-COMPANYCODENAME = 1.
<ESH_U_SCHEDAGRMT>-CREATEDBYUSER = 1.
<ESH_U_SCHEDAGRMT>-MATERIAL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ESH_U_SCHEDAGRMT-MATERIALGROUPNAME, sy-vline,
  WA_ESH_U_SCHEDAGRMT-MATERIALNAME, sy-vline,
  WA_ESH_U_SCHEDAGRMT-ORGANIZATIONBPNAME1, sy-vline,
  WA_ESH_U_SCHEDAGRMT-PLANT, sy-vline,
  WA_ESH_U_SCHEDAGRMT-PLANTNAME, sy-vline,
  WA_ESH_U_SCHEDAGRMT-PROJECTNETWORK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ESH_U_SCHEDAGRMT 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_ESH_U_SCHEDAGRMT 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_ESH_U_SCHEDAGRMT INTO WA_ESH_U_SCHEDAGRMT.


*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 ALPHA, internal->external for field SCHEDULINGAGREEMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ESH_U_SCHEDAGRMT-SCHEDULINGAGREEMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESH_U_SCHEDAGRMT-SCHEDULINGAGREEMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ESH_U_SCHEDAGRMT-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESH_U_SCHEDAGRMT-MATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PROJECTNETWORK
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ESH_U_SCHEDAGRMT-PROJECTNETWORK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESH_U_SCHEDAGRMT-PROJECTNETWORK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ESH_U_SCHEDAGRMT-SUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESH_U_SCHEDAGRMT-SUPPLIER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field WBSELEMENTINTERNALID
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_ESH_U_SCHEDAGRMT-WBSELEMENTINTERNALID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESH_U_SCHEDAGRMT-WBSELEMENTINTERNALID.
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_ESH_U_SCHEDAGRMT_STR, 
MANDT TYPE STRING,
SCHEDULINGAGREEMENT TYPE STRING,
COMPANYCODENAME TYPE STRING,
CREATEDBYUSER TYPE STRING,
MATERIAL TYPE STRING,
MATERIALGROUPNAME TYPE STRING,
MATERIALNAME TYPE STRING,
ORGANIZATIONBPNAME1 TYPE STRING,
PLANT TYPE STRING,
PLANTNAME TYPE STRING,
PROJECTNETWORK TYPE STRING,
PURCHASINGDOCUMENTCATEGORY TYPE STRING,
PURCHASINGDOCUMENTTYPE TYPE STRING,
PURCHASINGDOCUMENTTYPENAME TYPE STRING,
PURCHASINGGROUP TYPE STRING,
PURCHASINGGROUPNAME TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHORGANIZATION TYPE STRING,
PURCHASINGORGANIZATIONNAME TYPE STRING,
PURCHSINGORGNAIZATIONNAME TYPE STRING,
SUPPLIER TYPE STRING,
VALIDITYENDDATE TYPE STRING,
VALIDITYSTARTDATE TYPE STRING,
WBSELEMENTINTERNALID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ESH_U_SCHEDAGRMT_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_ESH_U_SCHEDAGRMT_STR-MANDT sy-vline 
WA_ESH_U_SCHEDAGRMT_STR-SCHEDULINGAGREEMENT sy-vline 
WA_ESH_U_SCHEDAGRMT_STR-COMPANYCODENAME sy-vline 
WA_ESH_U_SCHEDAGRMT_STR-CREATEDBYUSER sy-vline 
WA_ESH_U_SCHEDAGRMT_STR-MATERIAL sy-vline 
WA_ESH_U_SCHEDAGRMT_STR-MATERIALGROUPNAME sy-vline 
WA_ESH_U_SCHEDAGRMT_STR-MATERIALNAME sy-vline 
WA_ESH_U_SCHEDAGRMT_STR-ORGANIZATIONBPNAME1 sy-vline 
WA_ESH_U_SCHEDAGRMT_STR-PLANT sy-vline 
WA_ESH_U_SCHEDAGRMT_STR-PLANTNAME sy-vline 
WA_ESH_U_SCHEDAGRMT_STR-PROJECTNETWORK sy-vline 
WA_ESH_U_SCHEDAGRMT_STR-PURCHASINGDOCUMENTCATEGORY sy-vline 
WA_ESH_U_SCHEDAGRMT_STR-PURCHASINGDOCUMENTTYPE sy-vline 
WA_ESH_U_SCHEDAGRMT_STR-PURCHASINGDOCUMENTTYPENAME sy-vline 
WA_ESH_U_SCHEDAGRMT_STR-PURCHASINGGROUP sy-vline 
WA_ESH_U_SCHEDAGRMT_STR-PURCHASINGGROUPNAME sy-vline 
WA_ESH_U_SCHEDAGRMT_STR-PURCHASINGORGANIZATION sy-vline 
WA_ESH_U_SCHEDAGRMT_STR-PURCHORGANIZATION sy-vline 
WA_ESH_U_SCHEDAGRMT_STR-PURCHASINGORGANIZATIONNAME sy-vline 
WA_ESH_U_SCHEDAGRMT_STR-PURCHSINGORGNAIZATIONNAME sy-vline 
WA_ESH_U_SCHEDAGRMT_STR-SUPPLIER sy-vline 
WA_ESH_U_SCHEDAGRMT_STR-VALIDITYENDDATE sy-vline 
WA_ESH_U_SCHEDAGRMT_STR-VALIDITYSTARTDATE sy-vline 
WA_ESH_U_SCHEDAGRMT_STR-WBSELEMENTINTERNALID sy-vline      INTO ld_text SEPARATED BY SPACE.

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