Apply underscore naming to several more operators

The operator changes are:

* `isfalse` is now `is_false`
* `isnot_distinct_from` is now `is_not_distinct_from`
* `istrue` is now `is_true`
* `notbetween` is now `not_between`
* `notcontains` is now `not_contains`
* `notendswith` is now `not_endswith`
* `notilike` is now `not_ilike`
* `notlike` is now `not_like`
* `notmatch` is now `not_match`
* `notstartswith` is now `not_startswith`
* `nullsfirst` is now `nulls_first`
* `nullslast` is now `nulls_last`

Because these are core operators, the internal migration strategy for this
change is to support legacy terms for an extended period of time -- if not
indefinitely -- but update all documentation, tutorials, and internal usage
to the new terms.  The new terms are used to define the functions, and
the legacy terms have been deprecated into aliases of the new terms.

Fixes: #5435
Change-Id: Ifbd7cb1cdda5981990243c4fc4b4ff467dc132ac

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/sqlalchemy/dialects/mssql/base.py b/lib/sqlalchemy/dialects/mssql/base.py
index a224c00bb..bfe7a00ba 100644
--- a/lib/sqlalchemy/dialects/mssql/base.py
+++ b/lib/sqlalchemy/dialects/mssql/base.py
@@ -2077,7 +2077,7 @@ class MSSQLCompiler(compiler.SQLCompiler):
             self.process(binary.right),
         )
 
-    def visit_isnot_distinct_from_binary(self, binary, operator, **kw):
+    def visit_is_not_distinct_from_binary(self, binary, operator, **kw):
         return "EXISTS (SELECT %s INTERSECT SELECT %s)" % (
             self.process(binary.left),
             self.process(binary.right),
@@ -2165,7 +2165,7 @@ class MSSQLStrictCompiler(MSSQLCompiler):
             self.process(binary.right, **kw),
         )
 
-    def visit_notin_op_binary(self, binary, operator, **kw):
+    def visit_not_in_op_binary(self, binary, operator, **kw):
         kw["literal_execute"] = True
         return "%s NOT IN %s" % (
             self.process(binary.left, **kw),