Extend Database#create_function to support creating deterministic functions #551
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j-f1
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…es (#865) Fixes #840 by creating application-defined SQL functions (https://www.sqlite.org/appfunc.html) for Unicode-aware implementations of `LOWER()` and `UPPER()`. This uses `String.prototype.toLower/UpperCase()` JS method. I initially wanted to just redefine `LOWER()` and `UPPER()` but due to [sql.js not supporting the definition of deterministic functions](sql-js/sql.js#551), I had to just define them as separate functions and use that in the appropriate places. It's probably better like that anyway...
FlorianLang06
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…es (actualbudget#865) Fixes actualbudget#840 by creating application-defined SQL functions (https://www.sqlite.org/appfunc.html) for Unicode-aware implementations of `LOWER()` and `UPPER()`. This uses `String.prototype.toLower/UpperCase()` JS method. I initially wanted to just redefine `LOWER()` and `UPPER()` but due to [sql.js not supporting the definition of deterministic functions](sql-js/sql.js#551), I had to just define them as separate functions and use that in the appropriate places. It's probably better like that anyway...
my2
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…es (#865) Fixes #840 by creating application-defined SQL functions (https://www.sqlite.org/appfunc.html) for Unicode-aware implementations of `LOWER()` and `UPPER()`. This uses `String.prototype.toLower/UpperCase()` JS method. I initially wanted to just redefine `LOWER()` and `UPPER()` but due to [sql.js not supporting the definition of deterministic functions](sql-js/sql.js#551), I had to just define them as separate functions and use that in the appropriate places. It's probably better like that anyway...
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Per Application-Defined SQL Functions documentation, custom SQL functions can be marked as deterministic by setting
SQLITE_DETERMINISTICbit. This allows such functions to be used in certain contexts where they otherwise wouldn't be able to such as with the WHERE clause of partial indexes or in generated columns (https://www.sqlite.org/c3ref/c_deterministic.html#sqlitedeterministic).As a point of reference, the better-sqlite3 library exposes this through the
optionsargument in itsDatabase#function()method. One more option that it exposes through this mechanism isSQLITE_DIRECTONLYbit so it may make sense to support that as well.The text was updated successfully, but these errors were encountered: