v1.5.23
Bug Fixes
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Fixed issue reported in #179.
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Improve support for concurrent transactions in the emulator. This is done by randomly aborting the current transaction if a new transaction is requested. The probability of aborting the current transaction is controlled by a flag. This prevents the emulator from getting into an invalid state if the thread that holds the current transaction lock crashes. Fixes #137.
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Fixed issue where adding a NOT NULL column as a stored column in an index fails.
New Feature
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Add support for default sequence kind in CREATE SEQUENCE.
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Support WHERE IS NOT NULL for indexes.