mysql导出表结构

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SELECT
table_name,
  COLUMN_NAME 列名,
  COLUMN_TYPE 数据类型,
    DATA_TYPE 字段类型,
  CHARACTER_MAXIMUM_LENGTH 长度,
  IS_NULLABLE 是否为空,
  COLUMN_DEFAULT 默认值,
  COLUMN_COMMENT 备注 
FROM
 INFORMATION_SCHEMA.COLUMNS
where TABLE_SCHEMA='XXXX'
order by 
table_name

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