#Load bulk data into sequel pro how to
#Load bulk data into sequel pro update
#Load bulk data into sequel pro code

Submit your solution in an email message to by October 16. WHILE( test your SQL Server savvy in the November Reader Challenge, 'Collation Conflict' (below). RETURN Create the IPs table to store the IP address data.ĬREATE TABLE IPs ( StartIP varchar(15) NOT NULL,ĭECLARE int, int, int, int, int, int, int Note that Nick can save the format file to a specified location, then use that path in the following script: - Create the ipval UDF.ĭECLARE varchar(3), char(1), varbinary(4), tinyint

#Load bulk data into sequel pro how to

It also shows how to perform the BULK INSERT operation into the table and compares the script’s performance when you import the file into the table without indexes to its performance after you define the index on the computed column. The script below shows the complete implementation of the table. Additionally, Martin can eliminate the UDF by specifying an inline expression that converts the IP address into binary format to achieve better performance while inserting rows. By implementing the index on the server side, Martin achieves both his goals. This result lets Martin use the columns as part of the primary key constraint. The ISNULL() check for the UDF's return value in the computed-column expression ensures that the result of the expression is always a non-NULL value. Martin can use this UDF in the computed column as follows: ALTER TABLE IPs ADD StartIP_ ASĮndIP_ AS ISNULL(dbo.ipval( EndIP ), 0x0 ), RETURN implementation avoids system functions such as PATINDEX() or CHARINDEX() (because they're nondeterministic) and math functions such as POWER() (because they're imprecise and can't be indexed). SET = CAST( CAST( AS int ) AS binary(1) )

#Load bulk data into sequel pro code

The code below shows one way to implement a UDF that fulfills the requirement: CREATE FUNCTION ipvalĭECLARE varchar(3), char(1), bigint, tinyint (For more information about deterministic and nondeterministic functions, see these topics in SQL Server 'Books Online'-'BOL.') Therefore, he needs to implement the UDF so that it is deterministic. Martin knows that indexing on computed columns carries several restrictions because the computed column has to be deterministic and precise.

#Load bulk data into sequel pro update

This method lets him efficiently import the data file without modifying the input file and automatically update the index created for the searches. Additionally, he can index this computed column-a new feature in SQL Server 2000. Now Martin can code this logic in a user-defined function (UDF) and use the function to define a computed column on the table. The binary representation occupies 4 bytes and can order the IP addresses or perform range searches. + CAST(Octet3 AS binary) + CAST(Octet4 AS binary)īy converting each octet to a byte and concatenating the values, Martin can obtain a compact representation of the IP address in binary format. He can accomplish this conversion by performing the following calculations on each octet: Numeric Value = CAST(Octet1 AS binary) + CAST(Octet2 AS binary) Martin realizes that SQL Server can perform efficient range searches and lookups if he converts each IP address to a binary format instead of a string. Help Martin design an efficient solution that can perform the data import with no modifications to the input file and optimize the table for queries. Let’s assume the following table schema: CREATE TABLE IPs ( StartIP varchar(15) NOT NULL, Martin also needs to define indexes that will let SQL Server perform range searches efficiently on these networks or IP address ranges. The bcp format-file information below includes the data file's relevant columns: 8.0

Each row in the data file contains a range of IP addresses that defines a network and some of the network's characteristics such as the network type (e.g., Class A, Class B). Here’s a recap of the problem and the solution to the October Reader Challenge.įor reporting purposes, Martin uses bulk copy program (bcp) to import Web data about IP networks into a SQL Server 2000 database. Honorable mention goes to Byron Hynes, first-place winner in our September Reader Challenge.

Congratulations to Muhammad Nadeem Akhter, Solution Architect at AAJ Technologies in Fort Lauderdale, Florida, who won first prize of $100 for the best solution to the October Reader Challenge, 'Importing IP Information'.