[Exec](alias) support stddev alias to std

be/src/vec/aggregate_functions/aggregate_function_stddev.cpp

@@ -105,6 +105,7 @@ void register_aggregate_function_stddev_variance_pop(AggregateFunctionSimpleFact
     factory.register_alias("variance", "variance_pop");
     factory.register_function_both("stddev", create_aggregate_function_stddev_pop);
     factory.register_alias("stddev", "stddev_pop");
+    factory.register_alias("stddev", "std");
 }
 
 void register_aggregate_function_stddev_variance_samp_old(AggregateFunctionSimpleFactory& factory) {

fe/fe-core/src/main/java/org/apache/doris/analysis/FunctionCallExpr.java

@@ -79,7 +79,8 @@ public class FunctionCallExpr extends Expr {
     public static final ImmutableSet<String> STDDEV_FUNCTION_SET = new ImmutableSortedSet.Builder(
             String.CASE_INSENSITIVE_ORDER)
             .add("stddev").add("stddev_val").add("stddev_samp").add("stddev_pop").add("variance").add("variance_pop")
-            .add("variance_pop").add("var_samp").add("var_pop").add("variance_samp").add("avg_weighted").build();
+            .add("variance_pop").add("var_samp").add("var_pop").add("variance_samp").add("avg_weighted")
+            .add("std").build();
     public static final Map<String, java.util.function.BiFunction<ArrayList<Expr>, Type, Type>> PRECISION_INFER_RULE;
     public static final java.util.function.BiFunction<ArrayList<Expr>, Type, Type> DEFAULT_PRECISION_INFER_RULE;
     public static final ImmutableSet<String> ROUND_FUNCTION_SET = new ImmutableSortedSet.Builder(

fe/fe-core/src/main/java/org/apache/doris/catalog/BuiltinAggregateFunctions.java

@@ -160,7 +160,7 @@ public class BuiltinAggregateFunctions implements FunctionHelper {
             agg(SequenceCount.class, "sequence_count"),
             agg(SequenceMatch.class, "sequence_match"),
             agg(Skew.class, "skew", "skew_pop", "skewness"),
-            agg(Stddev.class, "stddev_pop", "stddev"),
+            agg(Stddev.class, "stddev_pop", "stddev", "std"),
             agg(StddevSamp.class, "stddev_samp"),
             agg(Sum.class, "sum"),
             agg(Sum0.class, "sum0"),

fe/fe-core/src/main/java/org/apache/doris/catalog/FunctionSet.java

@@ -1220,6 +1220,14 @@ private void initAggregateBuiltins() {
                         null, null, null,
                         "",
                         false, true, false, true));
+                addBuiltin(AggregateFunction.createBuiltin("stddev",
+                         Lists.newArrayList(t), STDDEV_RETTYPE_SYMBOL.get(t), t,
+                        "",
+                        "",
+                        "",
+                        null, null, null,
+                        "",
+                         false, true, false, true));
                 addBuiltin(AggregateFunction.createBuiltin("stddev_samp",
                         Lists.newArrayList(t), STDDEV_RETTYPE_SYMBOL.get(t), t,
                         "",

fe/fe-core/src/test/java/org/apache/doris/nereids/rules/analysis/GenerateFunction.java

@@ -183,6 +183,7 @@ public class GenerateFunction {
             .put("any", "any_value")
             .put("char_length", "character_length")
             .put("stddev_pop", "stddev")
+            .put("std", "stddev")
             .put("percentile_cont", "percentile")
             .put("var_pop", "variance")
             .put("variance_pop", "variance")

regression-test/data/query_p0/sql_functions/aggregate_functions/test_aggregate_all_functions.out

@@ -211,6 +211,11 @@ beijing chengdu shanghai
 2	216.5
 3	36.0
 
+-- !select29 --
+1	0.0
+2	216.5
+3	36.0
+
 -- !select30 --
 1	0.0
 2	216.5

regression-test/suites/query_p0/sql_functions/aggregate_functions/test_aggregate_all_functions.groovy

@@ -381,6 +381,7 @@ suite("test_aggregate_all_functions", "arrow_flight_sql") {
     sql "INSERT INTO ${tableName_15} values(1,10), (2,8), (2,441) ,(1,10) ,(3,29) ,(3,101)"
 
     qt_select29 "select id,stddev(level) from ${tableName_15} group by id order by id"
+    qt_select29 "select id,std(level) from ${tableName_15} group by id order by id"
     qt_select30 "select id,stddev_pop(level) from ${tableName_15} group by id order by id"
 
     sql "DROP TABLE IF EXISTS ${tableName_15}"