1.3 KiB
Hint Syntax Use either ’-- ’ (notice the whitespace) or ’#’after the semicolon or ’/* .. /’ before the semicolon. The MySQL manual doesn’t specify if comment blocks, i.e. ’/ .. */’, should contain a w hitespace character before or after the tags. All hints must start with the ’maxscale tag’: -- maxscale The hints right now have two types, ones that route to a server and others that contain name-value pairs. Routing queries to a server: -- maxscale route to [master | slave | server ] The name of the server is the same as in MaxScale.cnf Creating a name-value pair: -- maxscale = Currently the only accepted parameter is ’max_slave_replication_lag’ Hints can be either single-use hints, which makes them affect only one query, or named hints, which can be pushed on and off a stack of active hints. Defining named hints: -- maxscale prepare Pushing a hint onto the stack: -- maxscale begin Popping the topmost hint off the stack: -- maxscale end You can define and activate a hint in a single command using the following: -- maxscale begin You can also push anonymous hints onto the stack which are only used as long as they ar e on the stack: -- maxscale begin