JoverZhang commented on code in PR #55940: URL: https://github.com/apache/doris/pull/55940#discussion_r2343926374
########## regression-test/data/query_p0/aggregate/support_type/regr_intercept/regr_intercept.out: ########## @@ -6,17 +6,17 @@ -990000.0 -- !regr_intercept_int -- -1000001.0 +-9.999E9 Review Comment: According to - https://docs.snowflake.com/en/sql-reference/functions/regr_intercept - https://docs.snowflake.com/en/sql-reference/functions/regr_slope ```sql REGR_INTERCEPT(y, x) = AVG(y) - REGR_SLOPE(y, x) * AVG(x) REGR_SLOPE(y, x) = COVAR_POP(x, y) / VAR_POP(x) ``` ### Verification ```sql select regr_intercept(col_int, col_bigint) from d_table; ``` PostgreSQL ```sql select avg(col_int) - regr_slope(col_int, col_bigint) * avg(col_bigint) from d_table; +---------------+ | ?column? | |---------------| | -9999000000.0 | +---------------+ ``` Clickhouse (stable covariance/variance) ```sql SELECT avg(col_int) - ((covarPopStable(col_bigint, col_int) / varPopStable(col_bigint)) * avg(col_bigint)) FROM d_table ┌─minus(avg(co⋯l_bigint)))─┐ 1. │ -9999000000 │ -- -10.00 billion └──────────────────────────┘ ``` -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
