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分解后的二进制 JSON 数据

同版本中文手册节选

\n JSON 数据类型用于存储 JSON（JavaScript Object Notation）数据，如\n RFC\n 7159 所定义。这类数据也可以存储为 text，但 JSON\n 数据类型的优势在于会强制每个存储值都符合 JSON 规则。此外，对于存储在这些数据类型中的数据，还提供了各种 JSON 专用的函数和操作符；见第 9.16 节。\n

\nPostgreSQL 提供两种用于存储 JSON 数据的类型：json 和 jsonb。为了为这些数据类型实现高效的查询机制，PostgreSQL 还提供了\n jsonpath 数据类型，其说明见第 8.14.7 节。\n

\njson 和 jsonb 数据类型接收的输入值集合几乎完全相同。主要的实际区别在于效率。json 数据类型存储输入文本的精确副本，因此处理函数在每次执行时都必须重新解析；而 jsonb 数据则以分解后的二进制格式存储，由于增加了转换开销，输入时会稍慢一些，但处理起来会显著更快，因为不需要重新解析。jsonb 还支持索引，这可能是一个显著优势。\n

\n 由于 json 类型存储的是输入文本的精确副本，因此它会保留词元之间在语义上无关紧要的空白，以及 JSON 对象内部键的顺序。此外，如果值中的某个 JSON 对象包含同一个键多次，所有键/值对都会被保留下来（处理函数会将最后一个值视为生效值）。相比之下，jsonb 不保留空白，不保留对象键的顺序，也不保留重复的对象键。如果输入中指定了重复的键，则只保留最后一个值。\n

查看完整中文手册与上下文。

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分解后的二进制 JSON 数据

同版本中文手册节选

\n JSON 数据类型用于存储 JSON（JavaScript Object Notation）数据，如\n RFC\n 7159 所定义。这类数据也可以存储为 text，但 JSON\n 数据类型的优势在于会强制每个存储值都符合 JSON 规则。此外，对于存储在这些数据类型中的数据，还提供了各种 JSON 专用的函数和操作符；见第 9.16 节。\n

\nPostgreSQL 提供两种用于存储 JSON 数据的类型：json 和 jsonb。为了为这些数据类型实现高效的查询机制，PostgreSQL 还提供了\n jsonpath 数据类型，其说明见第 8.14.7 节。\n

\njson 和 jsonb 数据类型接收的输入值集合几乎完全相同。主要的实际区别在于效率。json 数据类型存储输入文本的精确副本，因此处理函数在每次执行时都必须重新解析；而 jsonb 数据则以分解后的二进制格式存储，由于增加了转换开销，输入时会稍慢一些，但处理起来会显著更快，因为不需要重新解析。jsonb 还支持索引，这可能是一个显著优势。\n

\n 由于 json 类型存储的是输入文本的精确副本，因此它会保留词元之间在语义上无关紧要的空白，以及 JSON 对象内部键的顺序。此外，如果值中的某个 JSON 对象包含同一个键多次，所有键/值对都会被保留下来（处理函数会将最后一个值视为生效值）。相比之下，jsonb 不保留空白，不保留对象键的顺序，也不保留重复的对象键。如果输入中指定了重复的键，则只保留最后一个值。\n

查看完整中文手册与上下文。

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分解后的二进制 JSON 数据

同版本中文手册节选

\n JSON 数据类型用于存储 JSON（JavaScript Object Notation）数据，如\n RFC\n 7159 所定义。这类数据也可以存储为 text，但 JSON\n 数据类型的优势在于会强制每个存储值都符合 JSON 规则。此外，对于存储在这些数据类型中的数据，还提供了各种 JSON 专用的函数和操作符；见第 9.16 节。\n

\nPostgreSQL 提供两种用于存储 JSON 数据的类型：json 和 jsonb。为了为这些数据类型实现高效的查询机制，PostgreSQL 还提供了\n jsonpath 数据类型，其说明见第 8.14.7 节。\n

\njson 和 jsonb 数据类型接收的输入值集合几乎完全相同。主要的实际区别在于效率。json 数据类型存储输入文本的精确副本，因此处理函数在每次执行时都必须重新解析；而 jsonb 数据则以分解后的二进制格式存储，由于增加了转换开销，输入时会稍慢一些，但处理起来会显著更快，因为不需要重新解析。jsonb 还支持索引，这可能是一个显著优势。\n

\n 由于 json 类型存储的是输入文本的精确副本，因此它会保留词元之间在语义上无关紧要的空白，以及 JSON 对象内部键的顺序。此外，如果值中的某个 JSON 对象包含同一个键多次，所有键/值对都会被保留下来（处理函数会将最后一个值视为生效值）。相比之下，jsonb 不保留空白，不保留对象键的顺序，也不保留重复的对象键。如果输入中指定了重复的键，则只保留最后一个值。\n

查看完整中文手册与上下文。

", "manual_documentation": "dedicated family chapter", "center_zh_rendered": "

分解后的二进制 JSON 数据

同版本中文手册节选

\n JSON 数据类型用于存储 JSON（JavaScript Object Notation）数据，如\n RFC\n 7159 所定义。这类数据也可以存储为 text，但 JSON\n 数据类型的优势在于会强制每个存储值都符合 JSON 规则。此外，对于存储在这些数据类型中的数据，还提供了各种 JSON 专用的函数和操作符；见第 9.16 节。\n

\nPostgreSQL 提供两种用于存储 JSON 数据的类型：json 和 jsonb。为了为这些数据类型实现高效的查询机制，PostgreSQL 还提供了\n jsonpath 数据类型，其说明见第 8.14.7 节。\n

\njson 和 jsonb 数据类型接收的输入值集合几乎完全相同。主要的实际区别在于效率。json 数据类型存储输入文本的精确副本，因此处理函数在每次执行时都必须重新解析；而 jsonb 数据则以分解后的二进制格式存储，由于增加了转换开销，输入时会稍慢一些，但处理起来会显著更快，因为不需要重新解析。jsonb 还支持索引，这可能是一个显著优势。\n

\n 由于 json 类型存储的是输入文本的精确副本，因此它会保留词元之间在语义上无关紧要的空白，以及 JSON 对象内部键的顺序。此外，如果值中的某个 JSON 对象包含同一个键多次，所有键/值对都会被保留下来（处理函数会将最后一个值视为生效值）。相比之下，jsonb 不保留空白，不保留对象键的顺序，也不保留重复的对象键。如果输入中指定了重复的键，则只保留最后一个值。\n

查看完整中文手册与上下文。

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