CREATE TABLE {your_journal_table_name} (
  Ordering BIGINT IDENTITY(1,1) NOT NULL,
  PersistenceID NVARCHAR(255) NOT NULL,
  SequenceNr BIGINT NOT NULL,
  Timestamp BIGINT NOT NULL,
  IsDeleted BIT NOT NULL,
  Manifest NVARCHAR(500) NOT NULL,
  Payload VARBINARY(MAX) NOT NULL,
  Tags NVARCHAR(100) NULL,
  SerializerId INTEGER NULL
  CONSTRAINT PK_{your_journal_table_name} PRIMARY KEY (Ordering),
  CONSTRAINT QU_{your_journal_table_name} UNIQUE (PersistenceID, SequenceNr)
);

CREATE TABLE {your_snapshot_table_name} (
  PersistenceID NVARCHAR(255) NOT NULL,
  SequenceNr BIGINT NOT NULL,
  Timestamp DATETIME2 NOT NULL,
  Manifest NVARCHAR(500) NOT NULL,
  Snapshot VARBINARY(MAX) NOT NULL,
  SerializerId INTEGER NULL
  CONSTRAINT PK_{your_snapshot_table_name} PRIMARY KEY (PersistenceID, SequenceNr)
);

CREATE TABLE {your_metadata_table_name} (
  PersistenceID NVARCHAR(255) NOT NULL,
  SequenceNr BIGINT NOT NULL,
  CONSTRAINT PK_{your_metadata_table_name} PRIMARY KEY (PersistenceID, SequenceNr)
);

ALTER TABLE {your_journal_table_name} ADD COLUMN SerializerId INTEGER NULL
ALTER TABLE {your_snapshot_table_name} ADD COLUMN SerializerId INTEGER NULL

ALTER TABLE {your_journal_table_name} DROP CONSTRAINT PK_{your_journal_table_name};
ALTER TABLE {your_journal_table_name} ADD Ordering BIGINT IDENTITY(1,1) PRIMARY KEY NOT NULL;
ALTER TABLE {your_journal_table_name} ADD Ordering BIGINT IDENTITY(1,1) NOT NULL;
ALTER TABLE {your_journal_table_name} ADD CONSTRAINT PK_EventJournal PRIMARY KEY (Ordering);
ALTER TABLE {your_journal_table_name} ADD CONSTRAINT QU_{your_journal_table_name} UNIQUE (PersistenceID, SequenceNr);

-- helper function to convert between DATETIME2 and BIGINT as .NET ticks
-- taken from: http://stackoverflow.com/questions/7386634/convert-sql-server-datetime-object-to-bigint-net-ticks
CREATE FUNCTION [dbo].[Ticks] (@dt DATETIME)
RETURNS BIGINT
WITH SCHEMABINDING
AS
BEGIN
DECLARE @year INT = DATEPART(yyyy, @dt)
DECLARE @month INT = DATEPART(mm, @dt)
DECLARE @day INT = DATEPART(dd, @dt)
DECLARE @hour INT = DATEPART(hh, @dt)
DECLARE @min INT = DATEPART(mi, @dt)
DECLARE @sec INT = DATEPART(ss, @dt)

DECLARE @days INT =
    CASE @month - 1
        WHEN 0 THEN 0
        WHEN 1 THEN 31
        WHEN 2 THEN 59
        WHEN 3 THEN 90
        WHEN 4 THEN 120
        WHEN 5 THEN 151
        WHEN 6 THEN 181
        WHEN 7 THEN 212
        WHEN 8 THEN 243
        WHEN 9 THEN 273
        WHEN 10 THEN 304
        WHEN 11 THEN 334
        WHEN 12 THEN 365
    END
    IF  @year % 4 = 0 AND (@year % 100  != 0 OR (@year % 100 = 0 AND @year % 400 = 0)) AND @month > 2 BEGIN
        SET @days = @days + 1
    END
RETURN CONVERT(bigint,
    ((((((((@year - 1) * 365) + ((@year - 1) / 4)) - ((@year - 1) / 100)) + ((@year - 1) / 400)) + @days) + @day) - 1) * 864000000000) +
    ((((@hour * 3600) + CONVERT(bigint, @min) * 60) + CONVERT(bigint, @sec)) * 10000000) + (CONVERT(bigint, DATEPART(ms, @dt)) * CONVERT(bigint,10000));

END;
ALTER TABLE {your_journal_table_name} ADD Timestamp_tmp BIGINT NULL;
UPDATE {your_journal_table_name} SET Timestamp_tmp = dbo.Ticks(Timestamp);
DROP INDEX [IX_EventJournal_Timestamp] ON {your_journal_table_name};
ALTER TABLE {your_journal_table_name} DROP COLUMN Timestamp;
ALTER TABLE {your_journal_table_name} ALTER COLUMN Timestamp_tmp BIGINT NOT NULL;
EXEC sp_RENAME '{your_journal_table_name}.Timestamp_tmp' , 'Timestamp', 'COLUMN';
CREATE NONCLUSTERED INDEX [IX_EventJournal_Timestamp] ON {your_journal_table_name}([Timestamp] ASC);
ALTER TABLE {your_journal_table_name} ADD Tags NVARCHAR(100) NULL;

CREATE TABLE {your_metadata_table_name} (
  PersistenceID NVARCHAR(255) NOT NULL,
  SequenceNr BIGINT NOT NULL,
  CONSTRAINT PK_Metadata PRIMARY KEY (PersistenceID, SequenceNr)
);

INSERT INTO {your_metadata_table_name} (PersistenceID, SequenceNr)
SELECT PersistenceID, MAX(SequenceNr) as SequenceNr FROM {your_journal_table_name} GROUP BY PersistenceID;

ALTER TABLE {your_journal_table_name} ALTER COLUMN PersistenceID NVARCHAR(255) [NOT NULL];

ALTER TABLE dbo.EventJournal ADD Timestamp DATETIME2 NOT NULL DEFAULT GETDATE();
ALTER TABLE dbo.EventJournal DROP CONSTRAINT PK_EventJournal;
ALTER TABLE dbo.EventJournal DROP COLUMN CS_PID;
ALTER TABLE dbo.EventJournal ADD CONSTRAINT PK_EventJournal PRIMARY KEY (PersistenceID, SequenceNr);
sp_RENAME 'EventJournal.PayloadType', 'Manifest', 'COLUMN';
sp_RENAME 'SnapshotStore.PayloadType', 'Manifest', 'COLUMN';