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When no suitable index is created, the optimizer does an "auto create index" for the query. This proposed index should be printed out to the online.log to help the admin to create the optimized indexes for the queries.
Expand DELETE syntax implementing LIMIT clause and maybe also ORDER BY.Delete syntax can be like:DELETE [FROM] tbl_name [WHERE where_condition] [ORDER BY ...] [LIMIT row_count]This limit + order by syntax is already implemented in other m...
If a customer needs to change the locale of a database, wants to standardize to a common locale etc then the only option is to unload the data and reload. On small databases this might be possible but for 99% of the real systems this is impractic...
Evaluate using io_uring for I/O in Informix Linux Platform
Create some performance tests and evaluate an architecture change in Informix to migrate AIO or Kernel AIO to using kernel io_uringMaybe it's not possible to use io_uring in Informix and nowadays, performance increase from using IO_DIRECT KAIO to ...
Allow MAX_PDQPRIORITY to be configurable per user.
We want to Informix to be able to use PDQ but we would not want 3rd party logins to be able to use PDQ and impact processing. The existing onconfig parmeter should be a default is it is not defined for the user.
Add SQL-statement COMMENT ON as in Oracle or PostgreSQL
For some tables or columns it would be helpful to describe what the table/column is used for since the names are not always self-explanatory.Although COMMENT ON is not part of standard SQL it would be helpful to have such a statement. The DOCUMENT...
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