MySQL 8.0 Release Notes
MySQL 8.0 Source Code Documentation
The INNODB_FT_BEING_DELETED table
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 the
INNODB_FT_DELETED table. Because the
contents of INNODB_FT_BEING_DELETED
typically have a short lifetime, this table has limited utility
for monitoring or debugging. For information about running
OPTIMIZE TABLE on tables with
FULLTEXT indexes, see
Section 12.9.6, “Fine-Tuning MySQL Full-Text Search”.
This table is empty initially. Before querying it, set the value
of the innodb_ft_aux_table system
variable to the name (including the database name) of the table
that contains the FULLTEXT index (for example,
test/articles). The output appears similar to
the example provided for the
INNODB_FT_DELETED table.
For related usage information and examples, see Section 15.14.4, “InnoDB INFORMATION_SCHEMA FULLTEXT Index Tables”.
The INNODB_FT_BEING_DELETED table has
these columns:
DOC_IDThe document ID of the row that is in the process of being deleted. This value might reflect the value of an ID column that you defined for the underlying table, or it can be a sequence value generated by
InnoDBwhen the table contains no suitable column. This value is used when you perform text searches, to skip rows in theINNODB_FT_INDEX_TABLEtable before data for deleted rows is physically removed from theFULLTEXTindex by anOPTIMIZE TABLEstatement. For more information, see Optimizing InnoDB Full-Text Indexes.
Notes
Use the
INFORMATION_SCHEMACOLUMNStable or theSHOW COLUMNSstatement to view additional information about the columns of this table, including data types and default values.You must have the
PROCESSprivilege to query this table.For more information about
InnoDBFULLTEXTsearch, see Section 15.6.2.4, “InnoDB FULLTEXT Indexes”, and Section 12.9, “Full-Text Search Functions”.