Expand description
Compile-time checked query macros for the postgresql crate.
query! and query_as! build a query and, when DATABASE_URL is set at
build time (and STDX_POSTGRESQL_CHECK is not false), connect to the
database, describe the statement and check that the parameters match the
server-inferred types. When the SQL is not a string literal, or checking is
disabled, the same code compiles and is decoded at runtime.