ABAP Select data from SAP table PC2H4 into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PC2H4 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 PC2H4. 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 PC2H4 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_PC2H4 TYPE STANDARD TABLE OF PC2H4,
      WA_PC2H4 TYPE PC2H4,
      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: <PC2H4> TYPE PC2H4.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PC2H4.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PC2H4
  INTO TABLE IT_PC2H4.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PC2H4
*  INTO TABLE @DATA(IT_PC2H42).
*--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_PC2H4 INDEX 1 INTO DATA(WA_PC2H42).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PC2H4 ASSIGNING <PC2H4>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PC2H4>-SEPDT = 1.
<PC2H4>-CRPAY = 1.
<PC2H4>-ADPAY = 1.
<PC2H4>-EXPAY = 1.
<PC2H4>-NAPPR = 1.

ENDLOOP.

LOOP AT IT_PC2H4 INTO WA_PC2H4.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PC2H4-HPY00, sy-vline,
  WA_PC2H4-IPY00, sy-vline,
  WA_PC2H4-SVRPR, sy-vline,
  WA_PC2H4-DUPPR, sy-vline,
  WA_PC2H4-CURR1, sy-vline,
  WA_PC2H4-BUS01, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PC2H4 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_PC2H4 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_PC2H4 INTO WA_PC2H4.


*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_PC2H4_STR, 
SEPDT TYPE STRING,
CRPAY TYPE STRING,
ADPAY TYPE STRING,
EXPAY TYPE STRING,
NAPPR TYPE STRING,
HPY00 TYPE STRING,
IPY00 TYPE STRING,
SVRPR TYPE STRING,
DUPPR TYPE STRING,
CURR1 TYPE STRING,
BUS01 TYPE STRING,
SPY01 TYPE STRING,
HPY01 TYPE STRING,
IPY01 TYPE STRING,
INT01 TYPE STRING,
RET01 TYPE STRING,
SET01 TYPE STRING,
EDT01 TYPE STRING,
LDT01 TYPE STRING,
BUS02 TYPE STRING,
SPY02 TYPE STRING,
HPY02 TYPE STRING,
IPY02 TYPE STRING,
INT02 TYPE STRING,
RET02 TYPE STRING,
SET02 TYPE STRING,
EDT02 TYPE STRING,
LDT02 TYPE STRING,
CURR2 TYPE STRING,
LSPDT TYPE STRING,
ASVRY TYPE STRING,
ASVRM TYPE STRING,
ASVRD TYPE STRING,
ACSVR TYPE STRING,
RDSVR TYPE STRING,
WESVR TYPE STRING,
TXSVR TYPE STRING,
SVRHO TYPE STRING,
VALDT TYPE STRING,
AGPDT TYPE STRING,
TXEMP TYPE STRING,
EXMLS TYPE STRING,
EXMHO TYPE STRING,
EXMPC TYPE STRING,
OVSCT TYPE STRING,
OSCHO TYPE STRING,
TEP01 TYPE STRING,
TEP02 TYPE STRING,
RETID TYPE STRING,
PSPAD TYPE STRING,
DUPAD TYPE STRING,
ADJST TYPE STRING,
DPA01 TYPE STRING,
DPA02 TYPE STRING,
ADDPC TYPE STRING,
EXMBF TYPE STRING,
EXMAF TYPE STRING,
ADDAF TYPE STRING,
PAYRP TYPE STRING,
TSVRD TYPE STRING,
ADDFS TYPE STRING,
ADDMS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PC2H4_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_PC2H4_STR-SEPDT sy-vline 
WA_PC2H4_STR-CRPAY sy-vline 
WA_PC2H4_STR-ADPAY sy-vline 
WA_PC2H4_STR-EXPAY sy-vline 
WA_PC2H4_STR-NAPPR sy-vline 
WA_PC2H4_STR-HPY00 sy-vline 
WA_PC2H4_STR-IPY00 sy-vline 
WA_PC2H4_STR-SVRPR sy-vline 
WA_PC2H4_STR-DUPPR sy-vline 
WA_PC2H4_STR-CURR1 sy-vline 
WA_PC2H4_STR-BUS01 sy-vline 
WA_PC2H4_STR-SPY01 sy-vline 
WA_PC2H4_STR-HPY01 sy-vline 
WA_PC2H4_STR-IPY01 sy-vline 
WA_PC2H4_STR-INT01 sy-vline 
WA_PC2H4_STR-RET01 sy-vline 
WA_PC2H4_STR-SET01 sy-vline 
WA_PC2H4_STR-EDT01 sy-vline 
WA_PC2H4_STR-LDT01 sy-vline 
WA_PC2H4_STR-BUS02 sy-vline 
WA_PC2H4_STR-SPY02 sy-vline 
WA_PC2H4_STR-HPY02 sy-vline 
WA_PC2H4_STR-IPY02 sy-vline 
WA_PC2H4_STR-INT02 sy-vline 
WA_PC2H4_STR-RET02 sy-vline 
WA_PC2H4_STR-SET02 sy-vline 
WA_PC2H4_STR-EDT02 sy-vline 
WA_PC2H4_STR-LDT02 sy-vline 
WA_PC2H4_STR-CURR2 sy-vline 
WA_PC2H4_STR-LSPDT sy-vline 
WA_PC2H4_STR-ASVRY sy-vline 
WA_PC2H4_STR-ASVRM sy-vline 
WA_PC2H4_STR-ASVRD sy-vline 
WA_PC2H4_STR-ACSVR sy-vline 
WA_PC2H4_STR-RDSVR sy-vline 
WA_PC2H4_STR-WESVR sy-vline 
WA_PC2H4_STR-TXSVR sy-vline 
WA_PC2H4_STR-SVRHO sy-vline 
WA_PC2H4_STR-VALDT sy-vline 
WA_PC2H4_STR-AGPDT sy-vline 
WA_PC2H4_STR-TXEMP sy-vline 
WA_PC2H4_STR-EXMLS sy-vline 
WA_PC2H4_STR-EXMHO sy-vline 
WA_PC2H4_STR-EXMPC sy-vline 
WA_PC2H4_STR-OVSCT sy-vline 
WA_PC2H4_STR-OSCHO sy-vline 
WA_PC2H4_STR-TEP01 sy-vline 
WA_PC2H4_STR-TEP02 sy-vline 
WA_PC2H4_STR-RETID sy-vline 
WA_PC2H4_STR-PSPAD sy-vline 
WA_PC2H4_STR-DUPAD sy-vline 
WA_PC2H4_STR-ADJST sy-vline 
WA_PC2H4_STR-DPA01 sy-vline 
WA_PC2H4_STR-DPA02 sy-vline 
WA_PC2H4_STR-ADDPC sy-vline 
WA_PC2H4_STR-EXMBF sy-vline 
WA_PC2H4_STR-EXMAF sy-vline 
WA_PC2H4_STR-ADDAF sy-vline 
WA_PC2H4_STR-PAYRP sy-vline 
WA_PC2H4_STR-TSVRD sy-vline 
WA_PC2H4_STR-ADDFS sy-vline 
WA_PC2H4_STR-ADDMS sy-vline      INTO ld_text SEPARATED BY SPACE.

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