ABAP Select data from SAP table ESH_U_JOA 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_JOA 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_JOA. 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_JOA 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_JOA TYPE STANDARD TABLE OF ESH_U_JOA,
      WA_ESH_U_JOA TYPE ESH_U_JOA,
      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_JOA> TYPE ESH_U_JOA.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ESH_U_JOA
*  INTO TABLE @DATA(IT_ESH_U_JOA2).
*--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_JOA INDEX 1 INTO DATA(WA_ESH_U_JOA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ESH_U_JOA>-MANDT = 1.
<ESH_U_JOA>-COMPANYCODE = 1.
<ESH_U_JOA>-JNTOPGAGRMT = 1.
<ESH_U_JOA>-JNTOPGAGRMTCLASS = 1.
<ESH_U_JOA>-JNTOPGAGRMTCLASSTEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ESH_U_JOA-JNTOPGAGRMTCREATEDBYUSER, sy-vline,
  WA_ESH_U_JOA-JNTOPGAGRMTEQUITYGRP, sy-vline,
  WA_ESH_U_JOA-JNTOPGAGRMTLASTCHANGEDBYUSER, sy-vline,
  WA_ESH_U_JOA-JNTOPGAGRMTTEXT, sy-vline,
  WA_ESH_U_JOA-JNTVNTRCONTRACTNMBR, sy-vline,
  WA_ESH_U_JOA-JVAOVHDPERCENTDEV, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ESH_U_JOA 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_JOA 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_JOA INTO WA_ESH_U_JOA.


*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 JNTOPGAGRMT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ESH_U_JOA-JNTOPGAGRMT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESH_U_JOA-JNTOPGAGRMT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field JNTVNTRCONTRACTNMBR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ESH_U_JOA-JNTVNTRCONTRACTNMBR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESH_U_JOA-JNTVNTRCONTRACTNMBR.
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_JOA_STR, 
MANDT TYPE STRING,
COMPANYCODE TYPE STRING,
JNTOPGAGRMT TYPE STRING,
JNTOPGAGRMTCLASS TYPE STRING,
JNTOPGAGRMTCLASSTEXT TYPE STRING,
JNTOPGAGRMTCREATEDBYUSER TYPE STRING,
JNTOPGAGRMTEQUITYGRP TYPE STRING,
JNTOPGAGRMTLASTCHANGEDBYUSER TYPE STRING,
JNTOPGAGRMTTEXT TYPE STRING,
JNTVNTRCONTRACTNMBR TYPE STRING,
JVAOVHDPERCENTDEV TYPE STRING,
JVAOVHDPERCENTPRODG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ESH_U_JOA_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_JOA_STR-MANDT sy-vline 
WA_ESH_U_JOA_STR-COMPANYCODE sy-vline 
WA_ESH_U_JOA_STR-JNTOPGAGRMT sy-vline 
WA_ESH_U_JOA_STR-JNTOPGAGRMTCLASS sy-vline 
WA_ESH_U_JOA_STR-JNTOPGAGRMTCLASSTEXT sy-vline 
WA_ESH_U_JOA_STR-JNTOPGAGRMTCREATEDBYUSER sy-vline 
WA_ESH_U_JOA_STR-JNTOPGAGRMTEQUITYGRP sy-vline 
WA_ESH_U_JOA_STR-JNTOPGAGRMTLASTCHANGEDBYUSER sy-vline 
WA_ESH_U_JOA_STR-JNTOPGAGRMTTEXT sy-vline 
WA_ESH_U_JOA_STR-JNTVNTRCONTRACTNMBR sy-vline 
WA_ESH_U_JOA_STR-JVAOVHDPERCENTDEV sy-vline 
WA_ESH_U_JOA_STR-JVAOVHDPERCENTPRODG sy-vline      INTO ld_text SEPARATED BY SPACE.

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