- for [ticket:2651], leaving CheckConstraint alone, preferring to keep

backwards compatibility.  A note about backslashing escapes is added.
Because the Text() construct now supports bind params better, the example
given in the code raises an exception now, so that should cover us.
The exception itself has been enhanced to include the key name of the
bound param.  We're backporting this to 0.8 but 0.8 doesn't have the
text->bind behavior that raises.

Conflicts:
	lib/sqlalchemy/sql/schema.py

1 files changed, 3 insertions, 2 deletions

diff --git a/lib/sqlalchemy/sql/compiler.py b/lib/sqlalchemy/sql/compiler.py
index d53753691..ad92396ee 100644
--- a/lib/sqlalchemy/sql/compiler.py
+++ b/lib/sqlalchemy/sql/compiler.py
@@ -786,8 +786,9 @@ class SQLCompiler(engine.Compiled):
             (within_columns_clause and \
                 self.ansi_bind_rules):
             if bindparam.value is None:
-                raise exc.CompileError("Bind parameter without a "
-                                        "renderable value not allowed here.")
+                raise exc.CompileError("Bind parameter '%s' without a "
+                                        "renderable value not allowed here."
+                                        % bindparam.key)
             return self.render_literal_bindparam(bindparam,
                             within_columns_clause=True, **kwargs)