How would you perform a left join between two DataFrames, df1 and df2, based on a common column 'ID'?
题目类型: 技术面试题
这是一道技术面试题，常见于澳洲IT公司面试中。
难度: medium
标签: Data Analyst
参考答案摘要
| 1 | merged_df = pd.merge(df1, df2, on = 'ID', how = 'left') | | --- | --- | We are using the pd.merge function from the pandas library to merge df1 and df2, based on a common col...
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