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13 Python PySpark Interview Questions: TCS and EXL
Interview questions on SQL, Python, and PySpark covering index types, tuple advantages, and query examples. Read More ⇢
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EXL Interview Questions: Python and SQL
Here are EXL’s interview questions on Python and SQL, including SQL JOINs and Python list manipulation methods. Read More ⇢
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Top PySpark Interview Questions to Ace Your Data Engineering Role
This post covers PySpark interview questions, a PySpark Data Engineer’s role, technical skills, and leadership interview questions. Read More ⇢
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How to Read Text Files in Pandas: 4 Approaches
Pandas offers options to read text files, like read_csv and fwf, along with read_table and read_excel methods. Read More ⇢
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How to Create and Monitor Pipelines: Azure Databricks
Databricks offers pipeline monitoring tools, including Jobs, Runs, Metrics, and Dashboards, for tracking and optimizing pipeline performance. Read More ⇢
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Oracle – Count(1) Vs. Count(*) Top Difference
The COUNT(1) and COUNT(*) functions in Oracle differ in row counting behavior, with no significant performance contrast. Read More ⇢
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Efficient SQL Row Insertion Techniques
This post outlines two efficient ways to add rows to a table in SQL: direct insertion and insertion with a SELECT statement. Read More ⇢
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DB2 SQL — RANK Vs DENSE_RANK: Top Differences
DB2 SQL offers powerful RANK and DENSE_RANK window functions for ranking operations, differing in their handling of ties. Read More ⇢
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How to Recover Deleted Rows in Oracle — Simplified
In our workshop, a team member accidentally deleted table rows, but we used Oracle flashback query to recover. Read More ⇢
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