Improve Apache Doris and StarRocks detection logic

- Use VERSION() = '5.7.99' as primary Doris fingerprint (more reliable than BITMAP functions)
- Add @@VERSION_COMMENT checks for both Doris and StarRocks
- Add StarRocks fork detection to avoid misidentification
- Remove unreliable BITMAP_UNION_COUNT() as sole detection method

This addresses the issue where BITMAP_UNION_COUNT() alone could misidentify
StarRocks or other bitmap-compatible systems as Doris. The new multi-step
detection logic provides more accurate database identification.

lib/core/enums.py

@@ -109,6 +109,7 @@ class FORK(object):
     OPENGAUSS = "OpenGauss"
     DM8 = "DM8"
     DORIS = "Doris"
+    STARROCKS = "StarRocks"
 
 class CUSTOM_LOGGING(object):
     PAYLOAD = 9

lib/core/settings.py

@@ -295,7 +295,7 @@ VIRTUOSO_SYSTEM_DBS = ("",)
 
 # Note: (<regular>) + (<forks>)
 MSSQL_ALIASES = ("microsoft sql server", "mssqlserver", "mssql", "ms")
-MYSQL_ALIASES = ("mysql", "my") + ("mariadb", "maria", "memsql", "tidb", "percona", "drizzle", "doris")
+MYSQL_ALIASES = ("mysql", "my") + ("mariadb", "maria", "memsql", "tidb", "percona", "drizzle", "doris", "starrocks")
 PGSQL_ALIASES = ("postgresql", "postgres", "pgsql", "psql", "pg") + ("cockroach", "cockroachdb", "amazon redshift", "redshift", "greenplum", "yellowbrick", "enterprisedb", "yugabyte", "yugabytedb", "opengauss")
 ORACLE_ALIASES = ("oracle", "orcl", "ora", "or")
 SQLITE_ALIASES = ("sqlite", "sqlite3")

plugins/dbms/mysql/fingerprint.py

@@ -105,8 +105,12 @@ class Fingerprint(GenericFingerprint):
                 fork = FORK.PERCONA
             elif inject.checkBooleanExpression("AURORA_VERSION() LIKE '%'"):            # Reference: https://aws.amazon.com/premiumsupport/knowledge-center/aurora-version-number/
                 fork = FORK.AURORA
-            elif inject.checkBooleanExpression("BITMAP_UNION_COUNT(NULL) IS NULL"):      # Reference: Apache Doris specific BITMAP functions
+            elif inject.checkBooleanExpression("VERSION() LIKE '5.7.99'"):              # Reference: Apache Doris returns fixed version 5.7.99 for MySQL compatibility
                 fork = FORK.DORIS
+            elif inject.checkBooleanExpression("@@VERSION_COMMENT LIKE '%Doris%'"):      # Reference: Apache Doris version comment contains 'Doris'
+                fork = FORK.DORIS
+            elif inject.checkBooleanExpression("@@VERSION_COMMENT LIKE '%StarRocks%'"):  # Reference: StarRocks version comment contains 'StarRocks'
+                fork = FORK.STARROCKS
             else:
                 fork = ""