March 22, 2018

PostgreSql create weekly child partition table

It seems that doing a quarterly partition is causing issues with the auto-vacum and clean up process, so instead now we are creating a single child table each week and remove the data every seven days,
so it took no time to figure it out and created the function trigger, but there should be a better way somewhere, but for now we still using inherit tables instead of actual file partitions.
Cheers,


CREATE 
OR 
replace FUNCTION weeklypartition_insert() 
returns TRIGGER language 'plpgsql' cost 100 volatile NOT leakproof AS $body$
DECLARE _partition_year VARCHAR(25);_partition              varchar(80);_IsNewChild             boolean;_current_week           varchar(4);_tablename              varchar(80);_currentdate timestamp ;BEGIN
  _currentdate := CURRENT_TIMESTAMP; 
  -- get current week 
  _current_week := date_part('week',new.insertdate)::text; ----- Week of the year (1-52) 
  -- get YYYY_MM format 
  _partition_year := to_char (new.insertdate,'YYYY')||'_'||date_part('week',new.insertdate); 
  _partition := tg_table_name || '_' || _partition_year; 
  _tablename := _partition; 
  if NOT EXISTS 
  ( 
         SELECT 1 
         FROM   pg_tables 
         WHERE  schemaname= tg_table_schema 
         AND    tablename= _partition) THEN 
  raise notice 'A partition has been created %',tg_table_schema ||'.'|| _partition; 
  _isnewchild = true; 
  execute 'create table '|| tg_table_schema ||'.'|| _partition || ' (check( to_char (insertdate,''YYYY'||'_'|| _current_week||''') = '''|| to_char (new.insertdate,'YYYY')||'_'|| _current_week||''')) INHERITS ( ParentTableName);';
endIF;EXECUTE 'insert into '|| tg_table_schema || '.' || _partition || ' SELECT(' || tg_table_schema || '.' || tg_table_name || ' ' || quote_literal(new) || ').* RETURNING PrimaryKeyId;';IF (_isnewchild) then
-- Add primary key 
EXECUTE format 
  ('ALTER TABLE '||tg_table_schema||'.%s ADD PRIMARY KEY(PrimaryKeyId)', _partition); 
-- Add indexesEXECUTE format 
  ('CREATE INDEX ix_%s_PrimarykeyID ON '||tg_table_schema||'.%s USING btree ("SequenceID")', _tablename, _tablename);EXECUTE format
  ('CREATE INDEX ix_%s_Insertdate ON '||tg_table_schema||'.%s USING btree ("insertdate")', _tablename, _tablename);ENDIF;RETURN NULL;END;$BODY$;ALTER FUNCTION weeklypartition_insert() owner TO db_owner;
grant EXECUTE ON FUNCTION weeklypartition_insert() TO db_datawriter; 
grant EXECUTE ON FUNCTION weeklypartition_insert() TO PUBLIC; 
grant EXECUTE ON FUNCTION weeklypartition_insert() TO db_executor; 
grant EXECUTE ON FUNCTION weeklypartition_insert() TO db_owner;

October 16, 2017

Postgresql Insert into Multiple Tables using void.


When you think you know everything here comes something simple to keep your hands dirty, a developer try to translate a ms sql procedure into a postgresql function and eventually it was pass to me, so I wrote something similar to below with a special caveat.
Enjoy....

CREATE OR REPLACE FUNCTION SchemaName.FunctionName_Save(
                _parameter1 character varying DEFAULT NULL::character varying,
                _parameter2 character varying DEFAULT NULL::character varying,
                _parameter3 timestamp without time zone DEFAULT NULL::timestamp without time zone,
                __parameter4 timestamp without time zone DEFAULT NULL::timestamp without time zone,
                _parameter5 character varying DEFAULT NULL::character varying,
                _parameter6 character varying DEFAULT NULL::character varying,
                _parameter7 character varying DEFAULT NULL::character varying,
                _parameter8 character varying DEFAULT NULL::character varying,
                _parameter9 character varying DEFAULT NULL::character varying,
                _parameter0 character varying DEFAULT NULL::character varying,
                _time timestamp without time zone DEFAULT NULL::timestamp without time zone,
                _result character varying DEFAULT NULL::character varying,
                _details character varying DEFAULT NULL::character varying,
                _queue character varying DEFAULT NULL::character varying)
RETURNS void
    LANGUAGE 'plpgsql'
    COST 100
    VOLATILE

AS $BODY$

           declare
             _local01 int;
            _local02 int;
            _local03 int;
            _local04 int;
            _local05 bigint;
            _local06 bigint;
            _local07 bigint;
begin


    if not exists (  select 1 from SchemaName.TableName0 where lower (name) = lower(_parameter1) )
     THEN
               
                                insert into SchemaName.TableName0 (name,insertdate)
                                 values (_parameter1,__parameter4)
             returning SchemaName.TableName0.TableName0id into _local01;
      else
                 select SchemaName.TableName0.TableName0id into _local01 from  SchemaName.TableName0 where lower (ColumnName) = lower(_parameter1);
     end if;
    
    if not exists (  select 1 from  SchemaName.TableName01 where lower (ColumnName) = lower(_parameter2) )
     THEN
               
                                 insert into SchemaName.TableName01(name)
                                values (_parameter2)
             returning SchemaName.TableName01.TableName01id into _local02;
      else
                 select SchemaName.TableName01.TableName01id into _local02 from  SchemaName.TableName01 where lower (name) = lower(_parameter2);
     end if;
    
     if not exists (  select 1 from  SchemaName..TableName02 where lower (name) = lower(_parameter5) )
     THEN
               
                                 insert into SchemaName..TableName02(name)
                                values (_parameter5)
             returning SchemaName..TableName02..TableName02id into _local03;
      ELSE
        select SchemaName..TableName02..TableName02id into _local03 from  SchemaName..TableName02 where lower (ColumnName) = lower(_parameter5);
     end if;
    
     if not exists( select 1 from SchemaName.queue  where lower (queueaddress) = lower(_queue))
     then
        insert into SchemaName.queue(column,column)
       values (_queue,__parameter4)
       returning SchemaName.queue.queueid into _local04;
      else
        select SchemaName.queue.queueid into _local04 from SchemaName.queue  where lower (ColumnName) = lower(_queue);
     end if;
    
    _local05 := nextval('SchemaName.TableName04_seq'::regclass);
   
    INSERT INTO SchemaName.TableName04(
                   Columns,columns,columns)
       values
       ( _local02,_parameter6,_parameter3e,__parameter4,_local04);
      --- returning  SchemaName.TableName04.TableName04id into _local05;
      
       _local06 := nextval('SchemaName.TableName04_local06_seq'::regclass);
      INSERT INTO SchemaName.TableName04details(columns,columns,columns)
                    values( _local05,_parameter7,_parameter8,__parameter4)
       returning SchemaName.TableName04details.TableName04detailsid into _local06;
      
       INSERT INTO SchemaName..TableName06
    ( columns,columns,columns,columns,...)
    VALUES
    ( _local01, _parameter0, _parameter9, _local05, _Time, _local03, _Result, _Details);
  
end;

$BODY$;


ALTER FUNCTION SchemaName.FunctionName_Save(character varying, character varying, timestamp without time zone, timestamp without time zone, character varying, character varying, character varying, character varying, character varying, character varying, timestamp without time zone, character varying, character varying, character varying)
    OWNER TO db_owner;

GRANT EXECUTE ON FUNCTION SchemaName.FunctionName_Save(character varying, character varying, timestamp without time zone, timestamp without time zone, character varying, character varying, character varying, character varying, character varying, character varying, timestamp without time zone, character varying, character varying, character varying) TO db_datawriter;

GRANT EXECUTE ON FUNCTION SchemaName.FunctionName_Save(character varying, character varying, timestamp without time zone, timestamp without time zone, character varying, character varying, character varying, character varying, character varying, character varying, timestamp without time zone, character varying, character varying, character varying) TO PUBLIC;

GRANT EXECUTE ON FUNCTION SchemaName.FunctionName_Save(character varying, character varying, timestamp without time zone, timestamp without time zone, character varying, character varying, character varying, character varying, character varying, character varying, timestamp without time zone, character varying, character varying, character varying) TO db_executor;

GRANT EXECUTE ON FUNCTION SchemaName.FunctionName_Save(character varying, character varying, timestamp without time zone, timestamp without time zone, character varying, character varying, character varying, character varying, character varying, character varying, timestamp without time zone, character varying, character varying, character varying) TO db_owner;

August 14, 2017

SSIS Json Serializer for SQL Server 2014 and below

#region Help:  Introduction to the Script Component
/* The Script Component allows you to perform virtually any operation that can be accomplished in
 * a .Net application within the context of an Integration Services data flow.
 *
 * Expand the other regions which have "Help" prefixes for examples of specific ways to use
 * Integration Services features within this script component. */
#endregion

#region Namespaces
using System;
using System.Data;
using Microsoft.SqlServer.Dts.Pipeline.Wrapper;
using Microsoft.SqlServer.Dts.Runtime.Wrapper;
using Newtonsoft.Json;
using Newtonsoft.Json.Converters;
using System.IO;
using System.Text;
using System.Xml;
#endregion

/// <summary>
/// This is the class to which to add your code.  Do not change the name, attributes, or parent
/// of this class.
/// </summary>
[Microsoft.SqlServer.Dts.Pipeline.SSISScriptComponentEntryPointAttribute]
public class ScriptMain : UserComponent
{
    #region Help:  Using Integration Services variables and parameters
    /* To use a variable in this script, first ensure that the variable has been added to
     * either the list contained in the ReadOnlyVariables property or the list contained in
     * the ReadWriteVariables property of this script component, according to whether or not your
     * code needs to write into the variable.  To do so, save this script, close this instance of
     * Visual Studio, and update the ReadOnlyVariables and ReadWriteVariables properties in the
     * Script Transformation Editor window.
     * To use a parameter in this script, follow the same steps. Parameters are always read-only.
     *
     * Example of reading from a variable or parameter:
     *  DateTime startTime = Variables.MyStartTime;
     *
     * Example of writing to a variable:
     *  Variables.myStringVariable = "new value";
     */
    #endregion

    #region Help:  Using Integration Services Connnection Managers
    /* Some types of connection managers can be used in this script component.  See the help topic
     * "Working with Connection Managers Programatically" for details.
     *
     * To use a connection manager in this script, first ensure that the connection manager has
     * been added to either the list of connection managers on the Connection Managers page of the
     * script component editor.  To add the connection manager, save this script, close this instance of
     * Visual Studio, and add the Connection Manager to the list.
     *
     * If the component needs to hold a connection open while processing rows, override the
     * AcquireConnections and ReleaseConnections methods.
     * 
     * Example of using an ADO.Net connection manager to acquire a SqlConnection:
     *  object rawConnection = Connections.SalesDB.AcquireConnection(transaction);
     *  SqlConnection salesDBConn = (SqlConnection)rawConnection;
     *
     * Example of using a File connection manager to acquire a file path:
     *  object rawConnection = Connections.Prices_zip.AcquireConnection(transaction);
     *  string filePath = (string)rawConnection;
     *
     * Example of releasing a connection manager:
     *  Connections.SalesDB.ReleaseConnection(rawConnection);
     */
    #endregion

    #region Help:  Firing Integration Services Events
    /* This script component can fire events.
     *
     * Example of firing an error event:
     *  ComponentMetaData.FireError(10, "Process Values", "Bad value", "", 0, out cancel);
     *
     * Example of firing an information event:
     *  ComponentMetaData.FireInformation(10, "Process Values", "Processing has started", "", 0, fireAgain);
     *
     * Example of firing a warning event:
     *  ComponentMetaData.FireWarning(10, "Process Values", "No rows were received", "", 0);
     */
    #endregion

    /// <summary>
    /// This method is called once, before rows begin to be processed in the data flow.
    ///
    /// You can remove this method if you don't need to do anything here.
    /// </summary>
    public override void PreExecute()
    {
        base.PreExecute();
        /*
         * Add your code here
         */
    }

    /// <summary>
    /// This method is called after all the rows have passed through this component.
    ///
    /// You can delete this method if you don't need to do anything here.
    /// </summary>
    public override void PostExecute()
    {
        base.PostExecute();
        /*
         * Add your code here
         */
    }

    /// <summary>
    /// This method is called once for every row that passes through the component from Input0.
    ///
    /// Example of reading a value from a column in the the row:
    ///  string zipCode = Row.ZipCode
    ///
    /// Example of writing a value to a column in the row:
    ///  Row.ZipCode = zipCode
    /// </summary>
    /// <param name="Row">The row that is currently passing through the component</param>
    public override void Input0_ProcessInputRow(Input0Buffer Row)
    {
        try
        {
            
            
            var dlenght = Convert.ToInt32(Row.XmlData.Length);// Get Length side of xml record
         
            var ddata = Row.XmlData.GetBlobData(0, dlenght); // Get Data as a block of bytes 

            var xdata = Encoding.UTF8.GetString(ddata); // Get String Encoded to UFT8
            
            StringBuilder Rawjson = new StringBuilder(); // Get String Builder 


            XmlDataDocument doc = new XmlDataDocument(); // Create Xml document 

            doc.LoadXml(xdata); // Load Document 

            XmlElement root = doc.DocumentElement;

            /*
             * Block to add missong nodes to the  code or remove childrens
             * var xNode = doc.SelectSingleNode("Customer/Password");
            xNode.ParentNode.RemoveChild(xNode);
            var password = doc.CreateElement("Password");
            var email = doc.SelectSingleNode("Customer/Email");
            root.InsertBefore(password, email);
             * 
             */
                
            // this is where the magic begin
            var settings = new JsonSerializerSettings();
            settings.NullValueHandling = NullValueHandling.Include;
            
           

            byte[] jbyte = ASCIIEncoding.UTF8.GetBytes(JsonConvert.SerializeXmlNode(doc, Newtonsoft.Json.Formatting.None));
            Rawjson.Append(Row.CustomerId.ToString() + "|");
            Rawjson.Append(Encoding.UTF8.GetString(jbyte));
            jbyte = null;

            // json.Replace(Password, DBNull.Value.ToString());
            byte[] jsonbyte = ASCIIEncoding.UTF8.GetBytes(Rawjson.ToString());
            Output0Buffer.AddRow();
            Output0Buffer.CustomerId = (int)Row.CustomerId;
          
            Output0Buffer.Json.AddBlobData(jsonbyte);

        
        }
        catch (Exception ex)
        {
            String ErrorMesage = "Error_JsonConversation CustomerId:" + Row.CustomerId.ToString();

            bool fireError = true;

            IDTSComponentMetaData100 myMetaData;

            myMetaData = this.ComponentMetaData;

            myMetaData.FireError(0, ErrorMesage, ex.ToString(), string.Empty, 0, out fireError);
        }

    }

    public override void CreateNewOutputRows()
    {
        /*
          Add rows by calling the AddRow method on the member variable named "<Output Name>Buffer".
          For example, call MyOutputBuffer.AddRow() if your output was named "MyOutput".
        */
    }

}

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