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PostgreSQL LEFT() Function: Extract Characters From the Left of a String - CommandPrompt Inc.
PostgreSQL SPLIT_PART() function - w3resource
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PostgreSQL LTRIM() function - w3resource
How we optimized PostgreSQL queries 100x | by Vadim Markovtsev | Towards Data Science
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scrapbook2/postgresql.md at master · equivalent/scrapbook2 · GitHub
How to Use LPAD() Function in PostgreSQL - CommandPrompt Inc.
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How to Split a String in PostgreSQL
Format Number in PostgreSQL - DatabaseFAQs.com
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PostgreSQL LEFT: Get First N Characters in a String
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old postgres needs 'right' and 'left' string functions - provided here · Issue #57 · OHDSI/AchillesWeb · GitHub
