Example MSSQL and MySQL tables to hold logging data:

/*MSSQL*/
CREATE TABLE [dbo].[CRUSHFTP_LOG](
 [LOG_ROW_NUM] [float] NOT NULL,
 [LOG_MILLIS] [float] NOT NULL,
 [LOG_TAG] [varchar](50) NULL,
 [LOG_DATA] [varchar](2000) NULL,
CONSTRAINT [PK_CRUSHFTP_LOG] PRIMARY KEY CLUSTERED
(
 [LOG_ROW_NUM] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]



/*MYSQL*/
CREATE TABLE `CRUSHFTP_LOG` (
	  LOG_ROW_NUM DOUBLE NOT NULL PRIMARY KEY,
	  LOG_MILLIS DOUBLE NOT NULL,
	  LOG_TAG VARCHAR(50) DEFAULT NULL,
	  LOG_DATA VARCHAR(2000) DEFAULT NULL);

If you have multiple servers dumping logs to the same table, make a new column for autonumbering and have that be primary key. Do not use the default primary key or there will be problems logging and the servers will run out of memory.

And a more optimized and tweaked version for MS SQL:

-- DATABASE CREATION

USE [master]
GO


CREATE DATABASE [CrushFTPDB]
 CONTAINMENT = NONE
 ON  PRIMARY 
( NAME = N'CrushFTPDB', FILENAME = N'D:\SQLServer\data\CrushFTPDB.mdf' , SIZE = 5120KB , MAXSIZE = UNLIMITED, FILEGROWTH = 1024KB )
 LOG ON 
( NAME = N'CrushFTPDB_log', FILENAME = N'C:\SQLServer\logs\CrushFTPDB_log.ldf' , SIZE = 4608KB , MAXSIZE = 2048GB , FILEGROWTH = 10%)
GO

ALTER DATABASE [CrushFTPDB] SET COMPATIBILITY_LEVEL = 110
GO

IF (1 = FULLTEXTSERVICEPROPERTY('IsFullTextInstalled'))
begin
EXEC [CrushFTPDB].[dbo].[sp_fulltext_database] @action = 'enable'
end
GO

ALTER DATABASE [CrushFTPDB] SET ANSI_NULL_DEFAULT OFF 
GO

ALTER DATABASE [CrushFTPDB] SET ANSI_NULLS OFF 
GO

ALTER DATABASE [CrushFTPDB] SET ANSI_PADDING OFF 
GO

ALTER DATABASE [CrushFTPDB] SET ANSI_WARNINGS OFF 
GO

ALTER DATABASE [CrushFTPDB] SET ARITHABORT OFF 
GO

ALTER DATABASE [CrushFTPDB] SET AUTO_CLOSE OFF 
GO

ALTER DATABASE [CrushFTPDB] SET AUTO_CREATE_STATISTICS ON 
GO

ALTER DATABASE [CrushFTPDB] SET AUTO_SHRINK OFF 
GO

ALTER DATABASE [CrushFTPDB] SET AUTO_UPDATE_STATISTICS ON 
GO

ALTER DATABASE [CrushFTPDB] SET CURSOR_CLOSE_ON_COMMIT OFF 
GO

ALTER DATABASE [CrushFTPDB] SET CURSOR_DEFAULT  GLOBAL 
GO

ALTER DATABASE [CrushFTPDB] SET CONCAT_NULL_YIELDS_NULL OFF 
GO

ALTER DATABASE [CrushFTPDB] SET NUMERIC_ROUNDABORT OFF 
GO

ALTER DATABASE [CrushFTPDB] SET QUOTED_IDENTIFIER OFF 
GO

ALTER DATABASE [CrushFTPDB] SET RECURSIVE_TRIGGERS OFF 
GO

ALTER DATABASE [CrushFTPDB] SET  DISABLE_BROKER 
GO

ALTER DATABASE [CrushFTPDB] SET AUTO_UPDATE_STATISTICS_ASYNC OFF 
GO

ALTER DATABASE [CrushFTPDB] SET DATE_CORRELATION_OPTIMIZATION OFF 
GO

ALTER DATABASE [CrushFTPDB] SET TRUSTWORTHY OFF 
GO

ALTER DATABASE [CrushFTPDB] SET ALLOW_SNAPSHOT_ISOLATION OFF 
GO

ALTER DATABASE [CrushFTPDB] SET PARAMETERIZATION SIMPLE 
GO

ALTER DATABASE [CrushFTPDB] SET READ_COMMITTED_SNAPSHOT OFF 
GO

ALTER DATABASE [CrushFTPDB] SET HONOR_BROKER_PRIORITY OFF 
GO

ALTER DATABASE [CrushFTPDB] SET RECOVERY FULL 
GO

ALTER DATABASE [CrushFTPDB] SET  MULTI_USER 
GO

ALTER DATABASE [CrushFTPDB] SET PAGE_VERIFY CHECKSUM  
GO

ALTER DATABASE [CrushFTPDB] SET DB_CHAINING OFF 
GO

ALTER DATABASE [CrushFTPDB] SET FILESTREAM( NON_TRANSACTED_ACCESS = OFF ) 
GO

ALTER DATABASE [CrushFTPDB] SET TARGET_RECOVERY_TIME = 0 SECONDS 
GO

ALTER DATABASE [CrushFTPDB] SET  READ_WRITE 
GO



-- TABLE CREATION

USE [CrushFTPDB]
GO

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_PADDING ON
GO
CREATE TABLE [dbo].[CRUSHFTP_LOG](
	[LOG_ROW_NUM] [bigint] NOT NULL,
	[LOG_MILLIS] [bigint] NULL,
	[LOG_TAG] [varchar](50) NULL,
	[LOG_DATA] [nvarchar](max) NULL,
 CONSTRAINT [PK_CRUSHFTP_LOG] PRIMARY KEY CLUSTERED 
(
	[LOG_ROW_NUM] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]

GO
SET ANSI_PADDING OFF
GO