1、查看當(dāng)前數(shù)據(jù)庫(kù)實(shí)例版本。

postgres=# select version();
version
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PostgreSQL 9.3.0 on x86_64-unknown-linux-gnu, compiled by gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-23), 64-bit
(1 row)