PostgreSQL REGR_SLOPE() Function | REGR_SLOPE in PostgreSQL | PostgreSQL REGR_SLOPE Function

Description:
In this PostgreSQL tutorial, I have explained how to use the PostgreSQL REGR_SLOPE() Function to calculate the slope of the least-squares-fit linear equation determined by the (X, Y) pairs, an aggregate function. I have shown the syntax of the regr_slope() function with its definition. After that, I explained the regr_slope() function in PostgreSQL using an example.

1- What is the regr_slope() function and its syntax with an example
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VAR_POP() and VAR_SAMP() functions in PostgreSQL: https://youtu.be/du0SeQX92gY
PostgreSQL COVAR_POP() function : https://youtu.be/WyPLmHCQsgU
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