# Functions
事务执行多行SQL.
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执行查询，无返回结果.
执行插入记录查询，返回最后插入ID.
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创建数据库连接，如果失败则panic.
创建数据库连接，如果失败则panic.
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创建数据库连接.
创建数据库连接.
查询记录数量，需要 SELECT count(*) AS count FROM ..
执行查询，有多行返回结果.
执行查询，有多行Map返回结果，所有字段值为[]byte或nil类型，可以转换为字符串.
执行查询，有一行返回结果.
执行查询，有一行Map返回结果，所有字段值为[]byte或nil类型，可以转换为字符串.
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设置 DEBUG 打印日志函数.
设置 WARN 打印日志函数.
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# Constants
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# Interfaces
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# Type aliases
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