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25.39.13 The INFORMATION_SCHEMA INNODB_FT_BEING_DELETED Table
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_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 perform text searches, to skip rows in theINNODB_FT_INDEX_TABLE
table before data for deleted rows is physically removed from theFULLTEXT
index by anOPTIMIZE TABLE
statement. For more information, see Optimizing InnoDB Full-Text Indexes.
Notes
Use the
INFORMATION_SCHEMA
COLUMNS
table or theSHOW COLUMNS
statement to view additional information about the columns of this table, including data types and default values.You must have the
PROCESS
privilege to query this table.For more information about
InnoDB
FULLTEXT
search, see Section 15.6.2.4, “InnoDB FULLTEXT Indexes”, and Section 12.9, “Full-Text Search Functions”.
Document created the 26/06/2006, last modified the 26/10/2018
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