PostgreSQL: How to Extract Value from XML Tag

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PostgreSQL: How to Get the Start of a Day

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PostgreSQL: How to Get File Extension from Filename

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PostgreSQL: How to Update Single Property Value in JSONB

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PostgreSQL: How to Calculate Average Timestamp

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PostgreSQL: How to Select Timestamp without Seconds

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PostgreSQL: How to Convert Text to an Array

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PostgreSQL: How to Select Random Row from Each Group

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PostgreSQL: How to Swap Column Values

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PostgreSQL: How to Select Columns by Position

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