MySQL 5.7 Reference Manual Including MySQL NDB Cluster 7.5 and NDB Cluster 7.6
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 14.16.4, “InnoDB INFORMATION_SCHEMA FULLTEXT Index Tables”.
The INNODB_FT_BEING_DELETED table has
these columns:
DOC_ID
The 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 InnoDB when the
table contains no suitable column. This value is used when you
do text searches, to skip rows in the
INNODB_FT_INDEX_TABLE table
before data for deleted rows is physically removed from the
FULLTEXT index by an
OPTIMIZE TABLE statement. For
more information, see Optimizing InnoDB Full-Text Indexes.
You must have the PROCESS
privilege to query this table.
Use the INFORMATION_SCHEMA
COLUMNS table or the
SHOW COLUMNS statement to view
additional information about the columns of this table,
including data types and default values.
For more information about InnoDB
FULLTEXT search, see
Section 14.6.2.4, “InnoDB Full-Text Indexes”, and
Section 12.9, “Full-Text Search Functions”.