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hi: 我下载的PostgreSQL9.3.1-CN-v1.1.pdf,发现pdf中sql的字符串标点均有误。 例如,文档中的8.2节货币类型的sql: SELECT ’12.34’::float8::numeric::money; 此时会出现错误:ERROR: syntax error at or near ".34" 正确的写法应该是: SELECT '12.34'::float8::numeric::money; 看起来好像没什么区别,但sql语句中用的是英文单引号,而文档的sql可能都是中文全角下的单引号。