select d.* from ( select d.dept_id, d.parent_id, d.dept_code, d.ancestors, d.dept_name, d.order_num, d.leader, d.phone, d.email, d.status, d.del_flag, d.create_by, d.create_time, d.pinyin_logogram,d.pinyin_whole,d.dept_type,d.dept_code,d.storage_type,d.third_code,d.dept_address from sys_dept d where dept_id = ? ) d left join sys_dept_ext sde on sde.dept_id = d.dept_id ### Cause: com.microsoft.sqlserver.jdbc.SQLServerException: 多次为 'd' 指定了列 'dept_code'。正确语句是什么
时间: 2024-02-17 20:03:42 浏览: 37
为了解决这个问题,您需要通过为列使用别名或删除一个重复的列来消除列名重复的问题。以下是修改后的查询语句示例:
```
select d.*, sde.dept_code as sde_dept_code
from (
select d.dept_id, d.parent_id, d.dept_code, d.ancestors, d.dept_name, d.order_num, d.leader, d.phone, d.email, d.status, d.del_flag, d.create_by, d.create_time, d.pinyin_logogram, d.pinyin_whole, d.dept_type, d.storage_type, d.third_code, d.dept_address
from sys_dept d
where dept_id = ?
) d
left join sys_dept_ext sde on sde.dept_id = d.dept_id
```
在这个查询中,为了消除重复的`dept_code`列,我们为`sys_dept_ext`表的`dept_code`列指定了别名`sde_dept_code`。这样就可以避免重复列名的问题,同时保持查询语句的正确性。
相关问题
SELECT t.dept_id FROM sys_dept t WHERE find_in_set(#{deptId}, ancestors)
这是一个SQL语句,它的作用是在sys_dept表中查询所有祖先节点包含指定deptId的部门ID。其中,#{deptId}是一个占位符,具体的值需要在执行SQL语句时传入。该语句使用了MySQL中的find_in_set函数,该函数可以在一个逗号分隔的字符串列表中查找指定的值,如果找到则返回该值在列表中的位置,否则返回0。在此语句中,ancestors列存储了每个部门的所有祖先节点的ID,以逗号分隔的形式存储。
element.get_attribute("xpath")
Apologies for the confusion, but the `get_attribute()` method in Selenium does not directly retrieve the XPath of an element. It is used to retrieve the value of a specific attribute of an element.
To obtain the XPath of an element using Selenium in Python, you can make use of the `selenium.webdriver.common.by.By` class and the `find_element()` method. Here's an example:
```python
from selenium import webdriver
from selenium.webdriver.common.by import By
driver = webdriver.Firefox()
driver.get("https://www.example.com")
element = driver.find_element(By.XPATH, "//div[@id='myElement']")
xpath = driver.execute_script("function absoluteXPath(element) {\
var comp, comps = [];\
var parent = null;\
var xpath = '';\
var getPos = function(element) {\
var position = 1, curNode;\
if (element.nodeType == Node.ATTRIBUTE_NODE) {\
return null;\
}\
for (curNode = element.previousSibling; curNode; curNode = curNode.previousSibling) {\
if (curNode.nodeName == element.nodeName) {\
++position;\
}\
}\
return position;\
};\
if (element instanceof Document) {\
return '/';\
}\
for (; element && !(element instanceof Document); element = element.nodeType == Node.ATTRIBUTE_NODE ? element.ownerElement : element.parentNode) {\
comp = comps[comps.length] = {};\
switch (element.nodeType) {\
case Node.TEXT_NODE:\
comp.name = 'text()';\
break;\
case Node.ATTRIBUTE_NODE:\
comp.name = '@' + element.nodeName;\
break;\
case Node.PROCESSING_INSTRUCTION_NODE:\
comp.name = 'processing-instruction()';\
break;\
case Node.COMMENT_NODE:\
comp.name = 'comment()';\
break;\
case Node.ELEMENT_NODE:\
comp.name = element.nodeName;\
break;\
}\
comp.position = getPos(element);\
}\
for (var i = comps.length - 1; i >= 0; i--) {\
comp = comps[i];\
xpath += '/' + comp.name.toLowerCase();\
if (comp.position !== null) {\
xpath += '[' + comp.position + ']';\
}\
}\
return xpath;\
}\
return absoluteXPath(arguments[0]);", element)
print(xpath)
driver.quit()
```
In the above example, we first import the required modules and create a new instance of the Firefox driver. Then, we navigate to the desired webpage.
Next, we use `find_element()` by passing `By.XPATH` as the locator strategy and an XPath expression as a parameter. In this example, we use the XPath `//div[@id='myElement']` to find the element with the ID "myElement".
After that, we execute a JavaScript function using `driver.execute_script()` to calculate the absolute XPath of the element. The JavaScript function iterates through the element's ancestors and constructs the XPath by considering the node name and position.
Finally, we print out the obtained XPath and close the browser using `driver.quit()`.
Please note that this example uses a JavaScript function to calculate the absolute XPath. It may not be the most efficient method, but it can be helpful in certain scenarios.