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| 242 | <input type="hidden" name="uuid" value="CREATE"> <input type="submit" value="Create and display another UUID"> |
242 | <input type="hidden" name="uuid" value="CREATE"> <input type="submit" value="Create and display another UUID"> |
| 243 | </form> |
243 | </form> |
| 244 | 244 | ||
| 245 | <h3 id="gen_uuidv8_sqlserver">Generate SQL server sortable time-based (version 8) UUID</h3> |
245 | <h3 id="gen_uuidv8_sqlserver">Generate SQL server sortable time-based (version 8) UUID</h3> |
| 246 | 246 | ||
| 247 | <p><i>The sorting of SQL Server is rather confusing and incompatible with UUIDv6 and UUIDv7.<br> |
247 | <p><i>The sorting of UUIDs in SQL Server is rather confusing and incompatible with UUIDv6 and UUIDv7.<br> |
| 248 | Therefore this method developed by <a href="https://www.hickelsoft.de/">HickelSOFT</a> |
248 | Therefore this method developed by <a href="https://www.hickelsoft.de/">HickelSOFT</a> |
| 249 | generates UUIDs which are sortable by SQL Server.<br> |
249 | generates UUIDs which are sortable by SQL Server.<br> |
| 250 | They have a time resolution of 1 milliseconds combined with 18 bits of random data.</i><br> |
250 | They have a time resolution of 1 milliseconds combined with 18 bits of random data.</i><br> |
| 251 | <a href="https://gist.github.com/danielmarschall/7fafd270a3bc107d38e8449ce7420c25">C# implementation</a> | |
251 | <a href="https://gist.github.com/danielmarschall/7fafd270a3bc107d38e8449ce7420c25">C# implementation</a> | |
| 252 | <a href="https://github.com/danielmarschall/uuid_mac_utils/blob/master/includes/uuid_utils.inc.php">PHP implementation</a> |
252 | <a href="https://github.com/danielmarschall/uuid_mac_utils/blob/master/includes/uuid_utils.inc.php">PHP implementation</a> |
| Line 269... | Line 269... | ||
| 269 | - 2 bit UUID Variant (0b10) |
269 | - 2 bit UUID Variant (0b10) |
| 270 | - 2 bit Random data |
270 | - 2 bit Random data |
| 271 | - 12 bit UTC Year (hex encoded) |
271 | - 12 bit UTC Year (hex encoded) |
| 272 | - 48 bit Signature 0x5ce32bd83b96 |
272 | - 48 bit Signature 0x5ce32bd83b96 |
| 273 | 273 | ||
| 274 | Version 1: Resolution of 1 milliseconds, random part of 16 bits, local timezone, 48 zero bit "signature", NOT UUIDv8 conform. |
274 | Version 1: Resolution of 1 milliseconds, random part of 16 bits, local timezone, 48 zero bit "signature", NOT UUIDv8 conform: |
| 275 | - 16 bit Random data |
275 | - 16 bit Random data |
| 276 | - 8 bit Generator's local timezone Milliseconds transformed from 1000ms to 0..255, deviation -4ms..0ms (hex encoded) |
276 | - 8 bit Generator's local timezone Milliseconds transformed from 1000ms to 0..255, deviation -4ms..0ms (hex encoded) |
| 277 | - 8 bit Generator's local timezone Seconds (BCD encoded) |
277 | - 8 bit Generator's local timezone Seconds (BCD encoded) |
| 278 | - 8 bit Generator's local timezone Minute (BCD encoded) |
278 | - 8 bit Generator's local timezone Minute (BCD encoded) |
| 279 | - 8 bit Generator's local timezone Hour (BCD encoded) |
279 | - 8 bit Generator's local timezone Hour (BCD encoded) |