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Overview
| Comment: | Fix a typo on the quirks.html page. |
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| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
dd1def55d82bb32c9e96d15084a9e477 |
| User & Date: | drh 2018-11-28 10:08:08.734 |
Context
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2018-11-28
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| 10:21 | Further enhancements to the Quirks document. (check-in: 8a0206bb29 user: drh tags: trunk) | |
| 10:08 | Fix a typo on the quirks.html page. (check-in: dd1def55d8 user: drh tags: trunk) | |
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2018-11-26
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| 18:57 | Caution users to have well-defined column names in VIEWs. (check-in: 5a0203cdca user: drh tags: trunk) | |
Changes
Changes to pages/quirks.in.
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158 159 160 161 162 163 164 | the [PRAGMA foreign_keys] statement. Or, foreign key enforcement can be activated at compile-time using the [-DSQLITE_DEFAULT_FOREIGN_KEYS=1] compile-time option. <h1>PRIMARY KEYs Can Sometimes Contain NULLs</h1> <p> | | | 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 | the [PRAGMA foreign_keys] statement. Or, foreign key enforcement can be activated at compile-time using the [-DSQLITE_DEFAULT_FOREIGN_KEYS=1] compile-time option. <h1>PRIMARY KEYs Can Sometimes Contain NULLs</h1> <p> Usually (the exceptions are [INTEGER PRIMARY KEY] tables and [WITHOUT ROWID] tables) a PRIMARY KEY in an SQLite table is really the same as a UNIQUE constraint. Due to an historical oversight, the column values of such a PRIMARY KEY are allowed to be NULL. This is a bug, but by the time the problem was discovered there where so many databases in circulation that depended on the bug that the decision was made to support the bugging behavior moving forward. <p> |
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