fix mssql sql_runif() to return random number for each row in result set

tidyverse · May 16, 2024 · 13b2252 · 13b2252
1 parent 8f2fcb0
commit 13b2252
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/R/backend-mssql.R b/R/backend-mssql.R
@@ -294,7 +294,8 @@ simulate_mssql <- function(version = "15.0") {
       is.na         = mssql_is_null,
 
       runif = function(n = n(), min = 0, max = 1) {
-        sql_runif(RAND(), n = {{ n }}, min = min, max = max)
+        # https://stackoverflow.com/a/9039661
+        sql_runif(RAND(CHECKSUM(NEWID())), n = {{ n }}, min = min, max = max)
       },
 
       # string functions ------------------------------------------------