ABAP Select data from SAP table LDLTIME 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 LDLTIME 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 LDLTIME. 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 LDLTIME 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_LDLTIME TYPE STANDARD TABLE OF LDLTIME,
      WA_LDLTIME TYPE LDLTIME,
      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: <LDLTIME> TYPE LDLTIME.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LDLTIME
*  INTO TABLE @DATA(IT_LDLTIME2).
*--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_LDLTIME INDEX 1 INTO DATA(WA_LDLTIME2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LDLTIME>-HEAD_MATNR = 1.
<LDLTIME>-HEAD_MAKTX = 1.
<LDLTIME>-HEAD_TPCT = 1.
<LDLTIME>-HEAD_GSDZT = 1.
<LDLTIME>-HEAD_GSDZT_VA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LDLTIME-HEAD_GSDZT_NVA, sy-vline,
  WA_LDLTIME-HEAD_WERKS, sy-vline,
  WA_LDLTIME-HEAD_COL01, sy-vline,
  WA_LDLTIME-HEAD_COL02, sy-vline,
  WA_LDLTIME-HEAD_COL03, sy-vline,
  WA_LDLTIME-HEAD_COL04, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LDLTIME 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_LDLTIME 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_LDLTIME INTO WA_LDLTIME.


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

*Conversion exit MATN1, internal->external for field VALS_MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_LDLTIME-VALS_MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LDLTIME-VALS_MATNR.
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_LDLTIME_STR, 
HEAD_MATNR TYPE STRING,
HEAD_MAKTX TYPE STRING,
HEAD_TPCT TYPE STRING,
HEAD_GSDZT TYPE STRING,
HEAD_GSDZT_VA TYPE STRING,
HEAD_GSDZT_NVA TYPE STRING,
HEAD_WERKS TYPE STRING,
HEAD_COL01 TYPE STRING,
HEAD_COL02 TYPE STRING,
HEAD_COL03 TYPE STRING,
HEAD_COL04 TYPE STRING,
HEAD_COL05 TYPE STRING,
HEAD_COL06 TYPE STRING,
HEAD_COL07 TYPE STRING,
HEAD_COL08 TYPE STRING,
HEAD_COL09 TYPE STRING,
HEAD_COL10 TYPE STRING,
HEAD_COL11 TYPE STRING,
HEAD_COL12 TYPE STRING,
HEAD_COL13 TYPE STRING,
HEAD_COL14 TYPE STRING,
HEAD_COL15 TYPE STRING,
HEAD_COL16 TYPE STRING,
HEAD_COL17 TYPE STRING,
HEAD_COL18 TYPE STRING,
HEAD_COL19 TYPE STRING,
HEAD_COL20 TYPE STRING,
VALS_MATNR TYPE STRING,
VALS_MAKTX TYPE STRING,
VALS_TPCT TYPE STRING,
VALS_GSDZT TYPE STRING,
VALS_GSDZT_VA TYPE STRING,
VALS_GSDZT_NVA TYPE STRING,
VALS_WERKS TYPE STRING,
VALS_COL01 TYPE STRING,
VALS_COL02 TYPE STRING,
VALS_COL03 TYPE STRING,
VALS_COL04 TYPE STRING,
VALS_COL05 TYPE STRING,
VALS_COL06 TYPE STRING,
VALS_COL07 TYPE STRING,
VALS_COL08 TYPE STRING,
VALS_COL09 TYPE STRING,
VALS_COL10 TYPE STRING,
VALS_COL11 TYPE STRING,
VALS_COL12 TYPE STRING,
VALS_COL13 TYPE STRING,
VALS_COL14 TYPE STRING,
VALS_COL15 TYPE STRING,
VALS_COL16 TYPE STRING,
VALS_COL17 TYPE STRING,
VALS_COL18 TYPE STRING,
VALS_COL19 TYPE STRING,
VALS_COL20 TYPE STRING,
HEAD_TIME_USED TYPE STRING,
HEAD_TIME_AVAIL TYPE STRING,
HEAD_USAGE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LDLTIME_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_LDLTIME_STR-HEAD_MATNR sy-vline 
WA_LDLTIME_STR-HEAD_MAKTX sy-vline 
WA_LDLTIME_STR-HEAD_TPCT sy-vline 
WA_LDLTIME_STR-HEAD_GSDZT sy-vline 
WA_LDLTIME_STR-HEAD_GSDZT_VA sy-vline 
WA_LDLTIME_STR-HEAD_GSDZT_NVA sy-vline 
WA_LDLTIME_STR-HEAD_WERKS sy-vline 
WA_LDLTIME_STR-HEAD_COL01 sy-vline 
WA_LDLTIME_STR-HEAD_COL02 sy-vline 
WA_LDLTIME_STR-HEAD_COL03 sy-vline 
WA_LDLTIME_STR-HEAD_COL04 sy-vline 
WA_LDLTIME_STR-HEAD_COL05 sy-vline 
WA_LDLTIME_STR-HEAD_COL06 sy-vline 
WA_LDLTIME_STR-HEAD_COL07 sy-vline 
WA_LDLTIME_STR-HEAD_COL08 sy-vline 
WA_LDLTIME_STR-HEAD_COL09 sy-vline 
WA_LDLTIME_STR-HEAD_COL10 sy-vline 
WA_LDLTIME_STR-HEAD_COL11 sy-vline 
WA_LDLTIME_STR-HEAD_COL12 sy-vline 
WA_LDLTIME_STR-HEAD_COL13 sy-vline 
WA_LDLTIME_STR-HEAD_COL14 sy-vline 
WA_LDLTIME_STR-HEAD_COL15 sy-vline 
WA_LDLTIME_STR-HEAD_COL16 sy-vline 
WA_LDLTIME_STR-HEAD_COL17 sy-vline 
WA_LDLTIME_STR-HEAD_COL18 sy-vline 
WA_LDLTIME_STR-HEAD_COL19 sy-vline 
WA_LDLTIME_STR-HEAD_COL20 sy-vline 
WA_LDLTIME_STR-VALS_MATNR sy-vline 
WA_LDLTIME_STR-VALS_MAKTX sy-vline 
WA_LDLTIME_STR-VALS_TPCT sy-vline 
WA_LDLTIME_STR-VALS_GSDZT sy-vline 
WA_LDLTIME_STR-VALS_GSDZT_VA sy-vline 
WA_LDLTIME_STR-VALS_GSDZT_NVA sy-vline 
WA_LDLTIME_STR-VALS_WERKS sy-vline 
WA_LDLTIME_STR-VALS_COL01 sy-vline 
WA_LDLTIME_STR-VALS_COL02 sy-vline 
WA_LDLTIME_STR-VALS_COL03 sy-vline 
WA_LDLTIME_STR-VALS_COL04 sy-vline 
WA_LDLTIME_STR-VALS_COL05 sy-vline 
WA_LDLTIME_STR-VALS_COL06 sy-vline 
WA_LDLTIME_STR-VALS_COL07 sy-vline 
WA_LDLTIME_STR-VALS_COL08 sy-vline 
WA_LDLTIME_STR-VALS_COL09 sy-vline 
WA_LDLTIME_STR-VALS_COL10 sy-vline 
WA_LDLTIME_STR-VALS_COL11 sy-vline 
WA_LDLTIME_STR-VALS_COL12 sy-vline 
WA_LDLTIME_STR-VALS_COL13 sy-vline 
WA_LDLTIME_STR-VALS_COL14 sy-vline 
WA_LDLTIME_STR-VALS_COL15 sy-vline 
WA_LDLTIME_STR-VALS_COL16 sy-vline 
WA_LDLTIME_STR-VALS_COL17 sy-vline 
WA_LDLTIME_STR-VALS_COL18 sy-vline 
WA_LDLTIME_STR-VALS_COL19 sy-vline 
WA_LDLTIME_STR-VALS_COL20 sy-vline 
WA_LDLTIME_STR-HEAD_TIME_USED sy-vline 
WA_LDLTIME_STR-HEAD_TIME_AVAIL sy-vline 
WA_LDLTIME_STR-HEAD_USAGE sy-vline      INTO ld_text SEPARATED BY SPACE.

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