Find all needed information about Mysql Support Bitmap Index. Below you can see links where you can find everything you want to know about Mysql Support Bitmap Index.
https://stackoverflow.com/questions/31007833/does-mysql-support-for-bitmap-indexes
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https://stackoverflow.com/a/31008606
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https://dev.mysql.com/worklog/task/?id=1524
The likely cases are: - If there is a btree index for any column in the search, use the btree index and ignore the bitmap index - If the condition contains anything other than "column = literal" or "column IS [NOT] NULL", use a full-table scan and ignore the bitmap index. Bitmap indexes might also prove useful for EXISTS and COUNT.
https://bugs.mysql.com/bug.php?id=30347
Its been more than 10 years , since this issue has been reported . Are we any close to this ?
https://dba.stackexchange.com/questions/71808/btree-index-and-bit-map-index
Btree index and Bit Map Index [duplicate] Ask Question Asked 5 years, 4 months ago. Active 5 years, 4 months ago. ... It's someone requesting that bitmap indexes be added to MySQL. It's not something that exists, it will potentially exist in future versions. – Mat Jul 18 '14 at 6:09. 1.
https://www.mysql.com/support/
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https://forums.mysql.com/read.php?10,263071
May 20, 2009 · I am new to Mysql. I am comfortable with Oracle. In the implementation we are planning to migrate from Oracle DB to MySQL. I want to compare the features available in Oracle and Mysql(and alsternatives). Like Table Partitioning(Hash, range, Composite). Indexing (BTree, Bitmap, Context search). Index orangainzed Tables Stored Packages.
https://dev.mysql.com/doc/refman/5.7/en/dynindex-function.html
LOAD_FILE() Section 16.2.1.1, “Advantages and Disadvantages of Statement-Based and Row-Based Replication” Section 16.2.1.3, “Determination of Safe and Unsafe Statements in Binary Logging”
https://dev.mysql.com/doc/refman/5.5/en/create-index.html
CREATE INDEX is mapped to an ALTER TABLE statement to create indexes. See Section 13.1.7, “ALTER TABLE Statement”. CREATE INDEX cannot be used to create a PRIMARY KEY; use ALTER TABLE instead. For more information about indexes, see Section 8.3.1, “How MySQL Uses Indexes”.
https://dev.mysql.com/doc/refman/5.7/en/mysql-indexes.html
If there is a choice between multiple indexes, MySQL normally uses the index that finds the smallest number of rows (the most selective index). If the table has a multiple-column index, any leftmost prefix of the index can be used by the optimizer to look up rows.
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