PDF (US Ltr)
- 43.3Mb
PDF (A4)
- 43.4Mb
Man Pages (TGZ)
- 296.5Kb
Man Pages (Zip)
- 401.9Kb
Info (Gzip)
- 4.3Mb
Info (Zip)
- 4.3Mb
Search Results
https://dev.mysql.com/doc/refman/8.0/en/innodb-compression-usage.html
This setting may still be useful for tables with many long BLOB, VARCHAR or TEXT columns, because such values often do compress well, and might therefore require fewer overflow pages as described in Section 17.9.1.5, “How Compression Works for ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-file-per-table-tablespaces.html
A file-per-table tablespace contains data and indexes for a single InnoDB table, and is stored on the file system in a single data file. File-per-table tablespace characteristics are described under the following topics in this section: ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-information-schema-fulltext_index-tables.html
INNODB_FT_BEING_DELETED: Provides a snapshot of the INNODB_FT_DELETED table; it is used only during an OPTIMIZE TABLE maintenance operation. When OPTIMIZE TABLE is run, the INNODB_FT_BEING_DELETED table is emptied, and DOC_ID values are removed from ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-limits.html
For example, you might hit this limit with a column prefix index of more than 191 characters on a TEXT or VARCHAR column, assuming a utf8mb4 character set and the maximum of 4 bytes for each character. This section describes limits for InnoDB ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-memcached-developing.html
The data stored through the daemon_memcached plugin goes into VARCHAR, TEXT, or BLOB columns, and must be converted to do numeric operations. Typically, writing an application for the InnoDB memcached plugin involves some degree of rewriting or ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-persistent-stats.html
The persistent optimizer statistics feature improves plan stability by storing statistics to disk and making them persistent across server restarts so that the optimizer is more likely to make consistent choices each time for a given query.
https://dev.mysql.com/doc/refman/8.0/en/insert.html
Inserting a string into a string column (CHAR, VARCHAR, TEXT, or BLOB) that exceeds the column maximum length. INSERT [LOW_PRIORITY | DELAYED | HIGH_PRIORITY] [IGNORE] [INTO] tbl_name [PARTITION (partition_name [, partition_name] ...)] [(col_name ...
https://dev.mysql.com/doc/refman/8.0/en/json-attribute-functions.html
The functions in this section return attributes of JSON values. An error occurs if the argument is not a valid JSON document. An empty array, empty object, or scalar value has depth 1. A nonempty array containing only elements of depth 1 or ...
https://dev.mysql.com/doc/refman/8.0/en/json-function-reference.html
Table 14.22 JSON Functions Name Description Introduced Deprecated -> Return value from JSON column after evaluating path; equivalent to JSON_EXTRACT(). ->> Return value from JSON column after evaluating path and unquoting the result; equivalent to ...
https://dev.mysql.com/doc/refman/8.0/en/json-search-functions.html
If not specified by a RETURNING clause, the JSON_VALUE() function's return type is VARCHAR(512). The functions in this section perform search or comparison operations on JSON values to extract data from them, report whether data exists at a ...