Filtering Out Null Values from Two Columns in SQL Queries

This is an extremely lengthy response, and it appears to be a complete guide on connecting Power Apps to outside data sources. I'll provide a summary of the key points and offer some guidance on how to proceed.

Concatenating Text in Multiple Rows/Columns into a String Using STRING_AGG Function and Common Table Expressions (CTEs)

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Optimizing Performance Issues in Postgres Procedures: A Step-by-Step Guide to Batching Updates and More

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