pgsql.cc 提供对 postgresql.org 官网内容的中文翻译，由 Pigsty 团队维护。
This section describes the base data types used in messages.
n(i)An n-bit integer in network byte order (most significant byte first). If i is specified it is the exact value that will appear, otherwise the value is variable. Eg. Int16, Int32(42).
n[k]An array of k n-bit integers, each in network byte order. The array length k is always determined by an earlier field in the message. Eg. Int16[M].
s)A null-terminated string (C-style string). There is no specific length limitation on strings. If s is specified it is the exact value that will appear, otherwise the value is variable. Eg. String, String("user").
There is no predefined limit on the length of a string that can be returned by the backend. Good coding strategy for a frontend is to use an expandable buffer so that anything that fits in memory can be accepted. If that's not feasible, read the full string and discard trailing characters that don't fit into your fixed-size buffer.
n(c)Exactly n bytes. If the field width n is not a constant, it is always determinable from an earlier field in the message. If c is specified it is the exact value. Eg. Byte2, Byte1('\n').
译文有误、术语不当或页面显示问题，请到译文仓库 pgsty/pgdoc 报告译文问题。 英文原文本身的问题，请在当前版本的对应页面向上游反馈；上游不再修订已结束维护的版本。