-- 检查withdraw表结构
SHOW CREATE TABLE withdraw;

-- 查看表字段详情
DESC withdraw;

-- 查看表的约束
SELECT 
    COLUMN_NAME,
    IS_NULLABLE,
    DATA_TYPE,
    COLUMN_DEFAULT,
    COLUMN_KEY,
    EXTRA
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_SCHEMA = 'peidu' 
  AND TABLE_NAME = 'withdraw'
ORDER BY ORDINAL_POSITION;