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Update masking documentation

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Johan Wikman 2017-01-11 12:58:43 +02:00
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Documentation/Filters/Masking.md
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@ -50,6 +50,15 @@ For a secure solution, the masking filter *must* be combined with the
firewall filter to prevent the use of functions and the use of particular
columns in where-clauses.
## Limitations
The masking filter can _only_ be used for masking columns of the following
types: `BINARY`, `VARBINARY`, `CHAR`, `VARCHAR`, 'BLOB', TINYBLOB`,
`MEDIUMBLOB`, `LONGBLOB`, `TEXT`, `TINYTEXT`, `MEDIUMTEXT`, `LONGTEXT`,
`ENUM` and `SET`.
If the type of the column is something else, then no masking will be performed.
## Configuration
The masking filter is taken into use with the following kind of