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https://dev.mysql.com/doc/refman/5.7/en/solaris-installation.html
To configure the generation of core files on Solaris you should use the coreadm command. Because of the security implications of generating a core on a setuid() application, by default, Solaris does not support core files on setuid() programs. If ...
https://dev.mysql.com/doc/refman/5.7/en/xml-functions.html
Table 12.16 XML Functions Name Description ExtractValue() Extract a value from an XML string using XPath notation UpdateXML() Return replaced XML fragment This section discusses XML and related functionality in MySQL. Note It is possible to obtain ...
https://dev.mysql.com/doc/refman/5.7/en/merge-storage-engine.html
“Identical” means that all tables have identical column data types and index information. You cannot merge MyISAM tables in which the columns are listed in a different order, do not have exactly the same data types in corresponding columns, or ... The MERGE storage engine, also known as the MRG_MyISAM engine, is a collection of identical MyISAM tables that can be used as ...
https://dev.mysql.com/doc/refman/5.7/en/precision-math-expressions.html
In strict SQL mode, for INSERT into a column with an exact data type (DECIMAL or integer), a number is inserted with its exact value if it is within the column range. Inserts into numeric columns are affected by the SQL mode, which is controlled by ... With precision math, exact-value numbers are used as given whenever ...
https://dev.mysql.com/doc/refman/5.7/en/range-optimization.html
The key_len column in the EXPLAIN output indicates the maximum length of the key prefix used. Equality Range Optimization of Many-Valued Comparisons Consider these expressions, where col_name is an indexed column: col_name IN(val1, ..., valN) ...
https://dev.mysql.com/doc/refman/5.7/en/faqs-cjk.html
You can obtain this information for a column column_name in the table table_name using the following query: SELECT HEX(column_name) FROM table_name; 3F is the encoding for the ? character; this means that ? is the character actually stored in the ...
https://dev.mysql.com/doc/refman/5.7/en/partitioning-range.html
While the examples work as shown for purposes of the present discussion, you should keep in mind that tables are extremely likely in practice to have primary keys, unique keys, or both, and that allowable choices for partitioning columns depend on ... A table that is partitioned by range is partitioned in such a way that each partition contains rows for which the partitioning expression value lies within a given ...
https://dev.mysql.com/doc/refman/5.7/en/internal-temporary-tables.html
Note When using internal_tmp_disk_storage_engine=INNODB, queries that generate on-disk internal temporary tables that exceed InnoDB row or column limits return Row size too large or Too many columns errors. Evaluation of statements that contain an ... In some cases, the server creates internal temporary tables while processing ...
https://dev.mysql.com/doc/refman/5.7/en/identifier-length.html
For constraint definitions that include no constraint name, the server internally generates a name derived from the associated table name. For example, internally generated foreign key constraint names consist of the table name plus _ibfk_ and a ...
https://dev.mysql.com/doc/refman/5.7/en/information-schema-optimization.html
This principle applies to the INFORMATION_SCHEMA tables shown in the following table, which shows the columns for which a constant lookup value enables the server to avoid a directory scan. The following list indicates how the preceding optimization ... Applications that monitor databases may make frequent use of INFORMATION_SCHEMA ...