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Critical154Important1Moderate0LowMicrosoft addresses 163 CVEs in the April 2026 Patch Tuesday release, including two zero-day ...

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-- but all employee rows still remain visible. -- The "window" here is all rows belonging to the same department_id. -- PARTITION BY does NOT merge rows like GROUP BY. -- It only creates separate ...

Find each employee’s salary along with the next employee’s salary based on salary order (whole company, no department grouping). -- Q2 – LEAD() with PARTITION BY Find each employee’s salary and the ...