mysql - How to use a variable name in a SQL statement? -


I am using R to call a mySQL statement, where I define the variable eg. 

  foo = 23; DbGetQuery (choose conn, "name by name, where age = '.foo.';")

but it gives an empty set, I have googled around and tried it. & Amp; Foo '".foo." '' & Amp; Amp; & Amp; Efu "'And many different combinations, but none of them works, I think it should be a mysql question rather than an RS-specific problem, but this is not definitive. Generally the variable is $ values, but R

This should work: 

  fu = 23 ; SqlStatement & lt; - Paste ("Choose the nickname by name, where age =", foo, '' ', sep = "") dbGetQuery (con, sqlStatement;)

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