在这个示例中,我们为department表和student表的dept_id列分别使用了dept_dept_id和student_dept_id作为别名,从而避免了列名冲突。 重新执行查询: 修改完查询语句后,重新执行它以验证是否解决了“duplicate column name 'dept_id'”的错误。 验证结果: 检查查询结果,确保没有出现重复的列名,并且数据正确无误。 按...
Duplicate column name 'id' 解决办法:搜索时,添加AS别名 select driver.id, driver.name, dept_id, gender, birthday, card, phone, entrytime, address, driver_no,driver_type, driver.remarks, driver.isdisable, dept.id as did, dept.dept_name from driver, dept where driver.dept_id = dept.id a...
Duplicatecolumnnameid 出现原因：搜索结果中出现重复列名，虽然sql中可以运⾏，但是由于mybatis中没有sql的⾃动列名序号，导致出现列名重复。解决办法：搜索时，添加AS别名 select driver.id, driver.name, dept_id, gender, birthday, card, phone, entrytime,address, driver_no,driver_type, driver.remarks, ...
address, driver_no,driver_type, driver.remarks, driver.isdisable, dept.idasdid, dept.dept_namefromdriver, deptwheredriver.dept_id=dept.idanddriver.namelike"%"#{driverLike}"%"orderbydriver.iddesc
Query 1 ERROR: Duplicate column name 'dept_no' A view also can’t have two columns of the same name. So to fix this, we can use alias: CREATE VIEW order_view AS SELECT customers.id, payment.id AS order_id, total FROM customers ...
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.appName("Load_Data_01") .master("local[2]") .getOrCreate()sc.setLogLevel("error") //测试环境为了少打印点日志,我将日志级别设置为error 2、将两个json文件加载进来 val df_emp = ssc.read.json("file:///E:\\javaBD\\BD\\json_file\\employee.json")val df_dept= ssc.read.format("jso...
empNamedept Jack RusselSales Jan KowalskiHR John DoeSales Marta WilsonHR Discussion First, we create a CTE calledduplicateswith a new column calledduplicate_count, which stores all records from the tableemployees. The new column stores the count of repetitions for each record in the table. The ...
’ GROUP BY table_schema, table_name, column_name HAVING count(column_name) > 1; It would be better to include ‘index_type’ in GROUP BY clause to more accurate answer. In the above query bind the ‘database name’ parameter. -Bog 0 Peter Zaitsev Author 16...
我没有您的表，所以我将使用Scott的示例模式来说明它。这是可行的，但返回重复的行：