Fixed #26134 -- Used new OpenGIS names for recent MySQL

Thanks František Malina for the report.

django/contrib/gis/db/backends/mysql/operations.py

@@ -11,12 +11,27 @@ class MySQLOperations(BaseSpatialOperations, DatabaseOperations):
 
     mysql = True
     name = 'mysql'
-    select = 'AsText(%s)'
-    from_wkb = 'GeomFromWKB'
-    from_text = 'GeomFromText'
 
     Adapter = WKTAdapter
 
+    @cached_property
+    def select(self):
+        if self.connection.mysql_version < (5, 6, 0):
+            return 'AsText(%s)'
+        return 'ST_AsText(%s)'
+
+    @cached_property
+    def from_wkb(self):
+        if self.connection.mysql_version < (5, 6, 0):
+            return 'GeomFromWKB'
+        return 'ST_GeomFromWKB'
+
+    @cached_property
+    def from_text(self):
+        if self.connection.mysql_version < (5, 6, 0):
+            return 'GeomFromText'
+        return 'ST_GeomFromText'
+
     gis_operators = {
         'bbcontains': SpatialOperator(func='MBRContains'),  # For consistency w/PostGIS API
         'bboverlaps': SpatialOperator(func='MBROverlaps'),  # .. ..
@@ -32,11 +47,13 @@ class MySQLOperations(BaseSpatialOperations, DatabaseOperations):
         'within': SpatialOperator(func='MBRWithin'),
     }
 
-    function_names = {
+    @cached_property
+    def function_names(self):
+        return {
             'Difference': 'ST_Difference',
             'Distance': 'ST_Distance',
             'Intersection': 'ST_Intersection',
-        'Length': 'GLength',
+            'Length': 'GLength' if self.connection.mysql_version < (5, 6, 0) else 'ST_Length',
             'SymDifference': 'ST_SymDifference',
             'Union': 'ST_Union',
         }