SELECT 
 column_name AS '列名',
 data_type   AS '数据类型', 
 character_maximum_length  AS '字符长度', 
 numeric_precision AS '数字长度',  
 numeric_scale AS '小数位数', 
 is_nullable AS '是否允许非空', 
 CASE 
  WHEN extra = 'auto_increment' THEN 1 
  ELSE 0 
    END AS '是否自增', 
 column_default  AS  '默认值', 
 column_comment  AS  '备注' 
FROM 
 Information_schema.columns 
WHERE 
 table_Name='customer_credit';

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