ABAP Select data from SAP table GVD_LATCH_PARENT into internal table

Get Example source ABAP code based on a different SAP table
  

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GVD_LATCH_PARENT
*  INTO TABLE @DATA(IT_GVD_LATCH_PARENT2).
*--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_GVD_LATCH_PARENT INDEX 1 INTO DATA(WA_GVD_LATCH_PARENT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_GVD_LATCH_PARENT ASSIGNING <GVD_LATCH_PARENT>.
*To update a field value using a field symbol simply change the value via the field symbol pointer
<GVD_LATCH_PARENT>-SNAPSHOT_ID = 1.
<GVD_LATCH_PARENT>-INST_ID = 1.
<GVD_LATCH_PARENT>-ADDR = 1.
<GVD_LATCH_PARENT>-LATCH = 1.
<GVD_LATCH_PARENT>-LATCH_LEVEL = 1.
ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GVD_LATCH_PARENT-NAME, sy-vline,
WA_GVD_LATCH_PARENT-GETS, sy-vline,
WA_GVD_LATCH_PARENT-MISSES, sy-vline,
WA_GVD_LATCH_PARENT-SLEEPS, sy-vline,
WA_GVD_LATCH_PARENT-IMMEDIATE_GETS, sy-vline,
WA_GVD_LATCH_PARENT-IMMEDIATE_MISSES, sy-vline.
ENDLOOP. *Add any further fields from structure WA_GVD_LATCH_PARENT 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_GVD_LATCH_PARENT 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_GVD_LATCH_PARENT INTO WA_GVD_LATCH_PARENT. *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_GVD_LATCH_PARENT_STR,
SNAPSHOT_ID TYPE STRING,
INST_ID TYPE STRING,
ADDR TYPE STRING,
LATCH TYPE STRING,
LATCH_LEVEL TYPE STRING,
NAME TYPE STRING,
GETS TYPE STRING,
MISSES TYPE STRING,
SLEEPS TYPE STRING,
IMMEDIATE_GETS TYPE STRING,
IMMEDIATE_MISSES TYPE STRING,
WAITERS_WOKEN TYPE STRING,
WAITS_HOLD_LTCH TYPE STRING,
SPIN_GETS TYPE STRING,
SLEEP1 TYPE STRING,
SLEEP2 TYPE STRING,
SLEEP3 TYPE STRING,
SLEEP4 TYPE STRING,
SLEEP5 TYPE STRING,
SLEEP6 TYPE STRING,
SLEEP7 TYPE STRING,
SLEEP8 TYPE STRING,
SLEEP9 TYPE STRING,
SLEEP10 TYPE STRING,
SLEEP11 TYPE STRING,
WAIT_TIME TYPE STRING,END OF T_EKKO_STR. DATA: WA_GVD_LATCH_PARENT_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_GVD_LATCH_PARENT_STR-SNAPSHOT_ID sy-vline
WA_GVD_LATCH_PARENT_STR-INST_ID sy-vline
WA_GVD_LATCH_PARENT_STR-ADDR sy-vline
WA_GVD_LATCH_PARENT_STR-LATCH sy-vline
WA_GVD_LATCH_PARENT_STR-LATCH_LEVEL sy-vline
WA_GVD_LATCH_PARENT_STR-NAME sy-vline
WA_GVD_LATCH_PARENT_STR-GETS sy-vline
WA_GVD_LATCH_PARENT_STR-MISSES sy-vline
WA_GVD_LATCH_PARENT_STR-SLEEPS sy-vline
WA_GVD_LATCH_PARENT_STR-IMMEDIATE_GETS sy-vline
WA_GVD_LATCH_PARENT_STR-IMMEDIATE_MISSES sy-vline
WA_GVD_LATCH_PARENT_STR-WAITERS_WOKEN sy-vline
WA_GVD_LATCH_PARENT_STR-WAITS_HOLD_LTCH sy-vline
WA_GVD_LATCH_PARENT_STR-SPIN_GETS sy-vline
WA_GVD_LATCH_PARENT_STR-SLEEP1 sy-vline
WA_GVD_LATCH_PARENT_STR-SLEEP2 sy-vline
WA_GVD_LATCH_PARENT_STR-SLEEP3 sy-vline
WA_GVD_LATCH_PARENT_STR-SLEEP4 sy-vline
WA_GVD_LATCH_PARENT_STR-SLEEP5 sy-vline
WA_GVD_LATCH_PARENT_STR-SLEEP6 sy-vline
WA_GVD_LATCH_PARENT_STR-SLEEP7 sy-vline
WA_GVD_LATCH_PARENT_STR-SLEEP8 sy-vline
WA_GVD_LATCH_PARENT_STR-SLEEP9 sy-vline
WA_GVD_LATCH_PARENT_STR-SLEEP10 sy-vline
WA_GVD_LATCH_PARENT_STR-SLEEP11 sy-vline
WA_GVD_LATCH_PARENT_STR-WAIT_TIME sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.