MYSQL表中汉字写入或字段赋值时乱码情况排误

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MYSQL表中汉字写入或字段赋值时乱码情况排误_MySQL

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Jun 01, 2016 pm 01:06 PM

-- 当修改字段值，或是直接写入时，汉字变成乱码情况 ，【可注意一下数据库名，记得修改】-- 当字符顺序对汉字不兼容时，可能直接导致乱码情况发生。   最好做到库、表、字段（字符类型）排序规则是否一致-- eg.在某库下建了临时表没有指定字符排序规则，下游会使用时，将临时表中的str字段值赋值给另外一个库表，可能会出现乱码-- 未指定排序建表时，则表的排序规则是其库的排序规则-- 1.  库级别SELECT * -- DEFAULT_CHARACTER_SET_NAME  DEFAULT_COLLATION_NAME  关注列 --  utf8                        utf8_general_ci FROM information_schema.`SCHEMATA` WHERE SCHEMA_NAME = &#39;AdDataCenter&#39;;-- 2. 表级别SELECT * -- TABLE_COLLATION  关注列 -- utf8_general_ciFROM information_schema.`TABLES` tWHERE t.`TABLE_SCHEMA` = &#39;AdDataCenter&#39;-- 3. 字段级别SELECT * -- COLLATION_NAME 关注列 -- utf8_general_ciFROM information_schema.`COLUMNS` AS cWHERE c.`TABLE_SCHEMA` = &#39;AdDataCenter&#39;

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