Ferreteria/sql/user client: Difference between revisions
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(removed old incorrect DROP statement) |
(er, correction...) |
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** '''2009-09-11''' CRC comes out negative sometimes, so making this SIGNED | ** '''2009-09-11''' CRC comes out negative sometimes, so making this SIGNED | ||
** '''2013-11-09''' Renamed from '''shop_client''' to '''user_client''' | ** '''2013-11-09''' Renamed from '''shop_client''' to '''user_client''' | ||
** '''2014-09-18''' ''Really'' renamed '''user_client'''; removed unwanted DROP TABLE statement. | |||
==SQL== | ==SQL== | ||
<mysql>CREATE TABLE ` | <mysql>CREATE TABLE `user_client` ( | ||
`ID` INT NOT NULL AUTO_INCREMENT, | `ID` INT NOT NULL AUTO_INCREMENT, | ||
`CRC` INT NOT NULL COMMENT "crc32(Address+Browser) - unique integer defined by client specs", | `CRC` INT NOT NULL COMMENT "crc32(Address+Browser) - unique integer defined by client specs", | ||
Revision as of 12:20, 18 September 2014
About
- Status: working / tested / debugged
- Fields
- CRC: checksum uniquely identifying user's IP address and browser client software. See notes.
- Notes:
- For identifying the user, decided to use CRC32 instead of compression because the compressed strings always came out at least as long as the original string. They were probably designed to be effective for rather longer data.
- History:
- 2009-06-16 Changing name to singular
- 2009-09-11 CRC comes out negative sometimes, so making this SIGNED
- 2013-11-09 Renamed from shop_client to user_client
- 2014-09-18 Really renamed user_client; removed unwanted DROP TABLE statement.
SQL
<mysql>CREATE TABLE `user_client` (
`ID` INT NOT NULL AUTO_INCREMENT, `CRC` INT NOT NULL COMMENT "crc32(Address+Browser) - unique integer defined by client specs", `Address` VARCHAR(15) NOT NULL COMMENT "IP address of client", `Domain` VARCHAR(255) COMMENT "Domain name of client", `Browser` VARCHAR(255) COMMENT "Browser USER_AGENT string", `WhenFirst` DATETIME NOT NULL COMMENT "When this client was first seen", `WhenFinal` DATETIME COMMENT "When this client was most recently seen", PRIMARY KEY(`ID`), UNIQUE KEY(`CRC`) ) ENGINE = MYISAM;</mysql>