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SQL

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  • Illegal command warning for group by
  • ON DUPLICATE KEY UPDATE
  • Data sorting using GROUP_CONCAT in subquery
  • The "SeekableString" Encoding
  • ERROR 1406 (22001): Leaf Error (x.x.x.x:330X): Data too long for column 'column_name'
  • Comparing two databases
  • Understanding the number of rows affected with UPSERT operation
  • Limit set by a client
  • Restore operation could not be completed because path on node is inaccessible or doesn't point to a MemSQL binary backup file
  • EXPLAIN plan output
  • Database Triggers in SingleStore
  • STRAIGHT_JOIN over INNER JOIN
  • Many unknown databases listed when running SHOW DATABASES directly on leaf node
  • Methods to move a large table across clusters
  • Best UUID data type
  • Long running analytical queries
  • Local join in a distributed database
  • ORDER BY in subqueries not being enforced in outer query
  • Selectivity of Secondary indexes
  • Ways to find whether table statistics are out of date
  • Converting datetime(6) with milliseconds to unix_timestamp with milisecond
  • TO_JSON conversion of TINYINT columns
  • Privilege required for executing AGGREGATOR SYNC AUTO_INCREMENT command
  • ERROR: Feature 'reshuffling a singleton select' is not supported by MemSQL Distributed
  • Restrictions on Primary/Unique keys
  • Clustered indexes vs. Secondary indexes
  • Bloom Filter performance impact
  • Merging of view/subquery with the outer query
  • Duplicate entry 'VALUE' for key 'PRIMARY'
  • GRANTS required for creating Stored Procedures
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