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17.4.1.26 Replication and Reserved Words
You can encounter problems when you attempt to replicate from an
older master to a newer slave and you make use of identifiers on
the master that are reserved words in the newer MySQL version
running on the slave. For example, a table column named
rank on a MySQL 5.7 master that is
replicating to a MySQL 8.0 slave could cause a
problem because RANK is a reserved word
beginning in MySQL 8.0.
Replication can fail in such cases with Error 1064
You have an error in your SQL syntax...,
even if a database or table named using the reserved
word or a table having a column named using the reserved word is
excluded from replication. This is due to the fact
that each SQL event must be parsed by the slave prior to
execution, so that the slave knows which database object or
objects would be affected. Only after the event is parsed can
the slave apply any filtering rules defined by
--replicate-do-db,
--replicate-do-table,
--replicate-ignore-db, and
--replicate-ignore-table.
To work around the problem of database, table, or column names on the master which would be regarded as reserved words by the slave, do one of the following:
Use one or more
ALTER TABLEstatements on the master to change the names of any database objects where these names would be considered reserved words on the slave, and change any SQL statements that use the old names to use the new names instead.In any SQL statements using these database object names, write the names as quoted identifiers using backtick characters (
`).
For listings of reserved words by MySQL version, see Reserved Words, in the MySQL Server Version Reference. For identifier quoting rules, see Section 9.2, “Schema Object Names”.
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Document créé le 26/06/2006, dernière modification le 26/10/2018
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