Removed obsolete SQL generation methods.

12 files changed, 2 insertions, 573 deletions

diff --git a/django/contrib/gis/db/backends/mysql/base.py b/django/contrib/gis/db/backends/mysql/base.py
index 62702d1ffe..afeed42203 100644
--- a/django/contrib/gis/db/backends/mysql/base.py
+++ b/django/contrib/gis/db/backends/mysql/base.py
@@ -1,6 +1,5 @@
 from django.db.backends.mysql.base import DatabaseWrapper as MySQLDatabaseWrapper
 
-from .creation import MySQLCreation
 from .features import DatabaseFeatures
 from .introspection import MySQLIntrospection
 from .operations import MySQLOperations
@@ -13,6 +12,5 @@ class DatabaseWrapper(MySQLDatabaseWrapper):
     def __init__(self, *args, **kwargs):
         super(DatabaseWrapper, self).__init__(*args, **kwargs)
         self.features = DatabaseFeatures(self)
-        self.creation = MySQLCreation(self)
         self.ops = MySQLOperations(self)
         self.introspection = MySQLIntrospection(self)
diff --git a/django/contrib/gis/db/backends/mysql/creation.py b/django/contrib/gis/db/backends/mysql/creation.py
deleted file mode 100644
index 303b8aef53..0000000000
--- a/django/contrib/gis/db/backends/mysql/creation.py
+++ /dev/null
@@ -1,18 +0,0 @@
-from django.db.backends.mysql.creation import DatabaseCreation
-
-
-class MySQLCreation(DatabaseCreation):
-    def sql_indexes_for_field(self, model, f, style):
-        from django.contrib.gis.db.models.fields import GeometryField
-        output = super(MySQLCreation, self).sql_indexes_for_field(model, f, style)
-
-        if isinstance(f, GeometryField) and f.spatial_index:
-            qn = self.connection.ops.quote_name
-            db_table = model._meta.db_table
-            idx_name = '%s_%s_id' % (db_table, f.column)
-            output.append(style.SQL_KEYWORD('CREATE SPATIAL INDEX ') +
-                          style.SQL_TABLE(qn(idx_name)) +
-                          style.SQL_KEYWORD(' ON ') +
-                          style.SQL_TABLE(qn(db_table)) + '(' +
-                          style.SQL_FIELD(qn(f.column)) + ');')
-        return output
diff --git a/django/contrib/gis/db/backends/oracle/base.py b/django/contrib/gis/db/backends/oracle/base.py
index 9d7ab7debd..d20ac2a9e7 100644
--- a/django/contrib/gis/db/backends/oracle/base.py
+++ b/django/contrib/gis/db/backends/oracle/base.py
@@ -1,6 +1,5 @@
 from django.db.backends.oracle.base import DatabaseWrapper as OracleDatabaseWrapper
 
-from .creation import OracleCreation
 from .features import DatabaseFeatures
 from .introspection import OracleIntrospection
 from .operations import OracleOperations
@@ -14,5 +13,4 @@ class DatabaseWrapper(OracleDatabaseWrapper):
         super(DatabaseWrapper, self).__init__(*args, **kwargs)
         self.features = DatabaseFeatures(self)
         self.ops = OracleOperations(self)
-        self.creation = OracleCreation(self)
         self.introspection = OracleIntrospection(self)
diff --git a/django/contrib/gis/db/backends/oracle/creation.py b/django/contrib/gis/db/backends/oracle/creation.py
deleted file mode 100644
index 4aa031220b..0000000000
--- a/django/contrib/gis/db/backends/oracle/creation.py
+++ /dev/null
@@ -1,43 +0,0 @@
-from django.db.backends.oracle.creation import DatabaseCreation
-from django.db.backends.utils import truncate_name
-
-
-class OracleCreation(DatabaseCreation):
-
-    def sql_indexes_for_field(self, model, f, style):
-        "Return any spatial index creation SQL for the field."
-        from django.contrib.gis.db.models.fields import GeometryField
-
-        output = super(OracleCreation, self).sql_indexes_for_field(model, f, style)
-
-        if isinstance(f, GeometryField):
-            gqn = self.connection.ops.geo_quote_name
-            qn = self.connection.ops.quote_name
-            db_table = model._meta.db_table
-
-            output.append(style.SQL_KEYWORD('INSERT INTO ') +
-                          style.SQL_TABLE('USER_SDO_GEOM_METADATA') +
-                          ' (%s, %s, %s, %s)\n  ' % tuple(map(qn, ['TABLE_NAME', 'COLUMN_NAME', 'DIMINFO', 'SRID'])) +
-                          style.SQL_KEYWORD(' VALUES ') + '(\n    ' +
-                          style.SQL_TABLE(gqn(db_table)) + ',\n    ' +
-                          style.SQL_FIELD(gqn(f.column)) + ',\n    ' +
-                          style.SQL_KEYWORD("MDSYS.SDO_DIM_ARRAY") + '(\n      ' +
-                          style.SQL_KEYWORD("MDSYS.SDO_DIM_ELEMENT") +
-                          ("('LONG', %s, %s, %s),\n      " % (f._extent[0], f._extent[2], f._tolerance)) +
-                          style.SQL_KEYWORD("MDSYS.SDO_DIM_ELEMENT") +
-                          ("('LAT', %s, %s, %s)\n    ),\n" % (f._extent[1], f._extent[3], f._tolerance)) +
-                          '    %s\n  );' % f.srid)
-
-            if f.spatial_index:
-                # Getting the index name, Oracle doesn't allow object
-                # names > 30 characters.
-                idx_name = truncate_name('%s_%s_id' % (db_table, f.column), 30)
-
-                output.append(style.SQL_KEYWORD('CREATE INDEX ') +
-                              style.SQL_TABLE(qn(idx_name)) +
-                              style.SQL_KEYWORD(' ON ') +
-                              style.SQL_TABLE(qn(db_table)) + '(' +
-                              style.SQL_FIELD(qn(f.column)) + ') ' +
-                              style.SQL_KEYWORD('INDEXTYPE IS ') +
-                              style.SQL_TABLE('MDSYS.SPATIAL_INDEX') + ';')
-        return output
diff --git a/django/contrib/gis/db/backends/postgis/creation.py b/django/contrib/gis/db/backends/postgis/creation.py
index 464f3d6a55..d1250cad8e 100644
--- a/django/contrib/gis/db/backends/postgis/creation.py
+++ b/django/contrib/gis/db/backends/postgis/creation.py
@@ -2,68 +2,6 @@ from django.db.backends.postgresql_psycopg2.creation import DatabaseCreation
 
 
 class PostGISCreation(DatabaseCreation):
-    geom_index_type = 'GIST'
-    geom_index_ops = 'GIST_GEOMETRY_OPS'
-    geom_index_ops_nd = 'GIST_GEOMETRY_OPS_ND'
-
-    def sql_indexes_for_field(self, model, f, style):
-        "Return any spatial index creation SQL for the field."
-        from django.contrib.gis.db.models.fields import GeometryField
-
-        output = super(PostGISCreation, self).sql_indexes_for_field(model, f, style)
-
-        if isinstance(f, GeometryField):
-            gqn = self.connection.ops.geo_quote_name
-            qn = self.connection.ops.quote_name
-            db_table = model._meta.db_table
-
-            if f.geography or self.connection.ops.geometry:
-                # Geography and Geometry (PostGIS 2.0+) columns are
-                # created normally.
-                pass
-            else:
-                # Geometry columns are created by `AddGeometryColumn`
-                # stored procedure.
-                output.append(style.SQL_KEYWORD('SELECT ') +
-                              style.SQL_TABLE('AddGeometryColumn') + '(' +
-                              style.SQL_TABLE(gqn(db_table)) + ', ' +
-                              style.SQL_FIELD(gqn(f.column)) + ', ' +
-                              style.SQL_FIELD(str(f.srid)) + ', ' +
-                              style.SQL_COLTYPE(gqn(f.geom_type)) + ', ' +
-                              style.SQL_KEYWORD(str(f.dim)) + ');')
-
-                if not f.null:
-                    # Add a NOT NULL constraint to the field
-                    output.append(style.SQL_KEYWORD('ALTER TABLE ') +
-                                  style.SQL_TABLE(qn(db_table)) +
-                                  style.SQL_KEYWORD(' ALTER ') +
-                                  style.SQL_FIELD(qn(f.column)) +
-                                  style.SQL_KEYWORD(' SET NOT NULL') + ';')
-
-            if f.spatial_index:
-                # Spatial indexes created the same way for both Geometry and
-                # Geography columns.
-                # PostGIS 2.0 does not support GIST_GEOMETRY_OPS. So, on 1.5
-                # we use GIST_GEOMETRY_OPS, on 2.0 we use either "nd" ops
-                # which are fast on multidimensional cases, or just plain
-                # gist index for the 2d case.
-                if f.geography:
-                    index_ops = ''
-                elif self.connection.ops.geometry:
-                    if f.dim > 2:
-                        index_ops = ' ' + style.SQL_KEYWORD(self.geom_index_ops_nd)
-                    else:
-                        index_ops = ''
-                else:
-                    index_ops = ' ' + style.SQL_KEYWORD(self.geom_index_ops)
-                output.append(style.SQL_KEYWORD('CREATE INDEX ') +
-                              style.SQL_TABLE(qn('%s_%s_id' % (db_table, f.column))) +
-                              style.SQL_KEYWORD(' ON ') +
-                              style.SQL_TABLE(qn(db_table)) +
-                              style.SQL_KEYWORD(' USING ') +
-                              style.SQL_COLTYPE(self.geom_index_type) + ' ( ' +
-                              style.SQL_FIELD(qn(f.column)) + index_ops + ' );')
-        return output
 
     def sql_table_creation_suffix(self):
         if self.connection.template_postgis is not None:
diff --git a/django/contrib/gis/db/backends/spatialite/base.py b/django/contrib/gis/db/backends/spatialite/base.py
index 4f02dfb6b0..44514a87d4 100644
--- a/django/contrib/gis/db/backends/spatialite/base.py
+++ b/django/contrib/gis/db/backends/spatialite/base.py
@@ -9,7 +9,6 @@ from django.db.backends.sqlite3.base import (
 from django.utils import six
 
 from .client import SpatiaLiteClient
-from .creation import SpatiaLiteCreation
 from .features import DatabaseFeatures
 from .introspection import SpatiaLiteIntrospection
 from .operations import SpatiaLiteOperations
@@ -41,7 +40,6 @@ class DatabaseWrapper(SQLiteDatabaseWrapper):
         self.features = DatabaseFeatures(self)
         self.ops = SpatiaLiteOperations(self)
         self.client = SpatiaLiteClient(self)
-        self.creation = SpatiaLiteCreation(self)
         self.introspection = SpatiaLiteIntrospection(self)
 
     def get_new_connection(self, conn_params):
diff --git a/django/contrib/gis/db/backends/spatialite/creation.py b/django/contrib/gis/db/backends/spatialite/creation.py
deleted file mode 100644
index f1f40671d5..0000000000
--- a/django/contrib/gis/db/backends/spatialite/creation.py
+++ /dev/null
@@ -1,32 +0,0 @@
-from django.db.backends.sqlite3.creation import DatabaseCreation
-
-
-class SpatiaLiteCreation(DatabaseCreation):
-
-    def sql_indexes_for_field(self, model, f, style):
-        "Return any spatial index creation SQL for the field."
-        from django.contrib.gis.db.models.fields import GeometryField
-
-        output = super(SpatiaLiteCreation, self).sql_indexes_for_field(model, f, style)
-
-        if isinstance(f, GeometryField):
-            gqn = self.connection.ops.geo_quote_name
-            db_table = model._meta.db_table
-
-            output.append(style.SQL_KEYWORD('SELECT ') +
-                          style.SQL_TABLE('AddGeometryColumn') + '(' +
-                          style.SQL_TABLE(gqn(db_table)) + ', ' +
-                          style.SQL_FIELD(gqn(f.column)) + ', ' +
-                          style.SQL_FIELD(str(f.srid)) + ', ' +
-                          style.SQL_COLTYPE(gqn(f.geom_type)) + ', ' +
-                          style.SQL_KEYWORD(str(f.dim)) + ', ' +
-                          style.SQL_KEYWORD(str(int(not f.null))) +
-                          ');')
-
-            if f.spatial_index:
-                output.append(style.SQL_KEYWORD('SELECT ') +
-                              style.SQL_TABLE('CreateSpatialIndex') + '(' +
-                              style.SQL_TABLE(gqn(db_table)) + ', ' +
-                              style.SQL_FIELD(gqn(f.column)) + ');')
-
-        return output
diff --git a/django/db/backends/base/creation.py b/django/db/backends/base/creation.py
index 8780ee22ce..073f18e001 100644
--- a/django/db/backends/base/creation.py
+++ b/django/db/backends/base/creation.py
@@ -1,15 +1,10 @@
-import hashlib
 import sys
 import time
-import warnings
 
 from django.apps import apps
 from django.conf import settings
 from django.core import serializers
 from django.db import router
-from django.db.backends.utils import truncate_name
-from django.utils.deprecation import RemovedInDjango20Warning
-from django.utils.encoding import force_bytes
 from django.utils.six import StringIO
 from django.utils.six.moves import input
 
@@ -22,9 +17,7 @@ TEST_DATABASE_PREFIX = 'test_'
 class BaseDatabaseCreation(object):
     """
     This class encapsulates all backend-specific differences that pertain to
-    database *creation*, such as the column types to use for particular Django
-    Fields, the SQL used to create and destroy tables, and the creation and
-    destruction of test databases.
+    creation and destruction of the test database.
     """
     def __init__(self, connection):
         self.connection = connection
@@ -36,296 +29,6 @@ class BaseDatabaseCreation(object):
         """
         return self.connection._nodb_connection
 
-    @classmethod
-    def _digest(cls, *args):
-        """
-        Generates a 32-bit digest of a set of arguments that can be used to
-        shorten identifying names.
-        """
-        h = hashlib.md5()
-        for arg in args:
-            h.update(force_bytes(arg))
-        return h.hexdigest()[:8]
-
-    def sql_create_model(self, model, style, known_models=set()):
-        """
-        Returns the SQL required to create a single model, as a tuple of:
-            (list_of_sql, pending_references_dict)
-        """
-        opts = model._meta
-        if not opts.managed or opts.proxy or opts.swapped:
-            return [], {}
-        final_output = []
-        table_output = []
-        pending_references = {}
-        qn = self.connection.ops.quote_name
-        for f in opts.local_fields:
-            db_params = f.db_parameters(connection=self.connection)
-            col_type = db_params['type']
-            if db_params['check']:
-                col_type = '%s CHECK (%s)' % (col_type, db_params['check'])
-            col_type_suffix = f.db_type_suffix(connection=self.connection)
-            tablespace = f.db_tablespace or opts.db_tablespace
-            if col_type is None:
-                # Skip ManyToManyFields, because they're not represented as
-                # database columns in this table.
-                continue
-            # Make the definition (e.g. 'foo VARCHAR(30)') for this field.
-            field_output = [style.SQL_FIELD(qn(f.column)),
-                style.SQL_COLTYPE(col_type)]
-            # Oracle treats the empty string ('') as null, so coerce the null
-            # option whenever '' is a possible value.
-            null = f.null
-            if (f.empty_strings_allowed and not f.primary_key and
-                    self.connection.features.interprets_empty_strings_as_nulls):
-                null = True
-            if not null:
-                field_output.append(style.SQL_KEYWORD('NOT NULL'))
-            if f.primary_key:
-                field_output.append(style.SQL_KEYWORD('PRIMARY KEY'))
-            elif f.unique:
-                field_output.append(style.SQL_KEYWORD('UNIQUE'))
-            if tablespace and f.unique:
-                # We must specify the index tablespace inline, because we
-                # won't be generating a CREATE INDEX statement for this field.
-                tablespace_sql = self.connection.ops.tablespace_sql(
-                    tablespace, inline=True)
-                if tablespace_sql:
-                    field_output.append(tablespace_sql)
-            if f.rel and f.db_constraint:
-                ref_output, pending = self.sql_for_inline_foreign_key_references(
-                    model, f, known_models, style)
-                if pending:
-                    pending_references.setdefault(f.rel.to, []).append(
-                        (model, f))
-                else:
-                    field_output.extend(ref_output)
-            if col_type_suffix:
-                field_output.append(style.SQL_KEYWORD(col_type_suffix))
-            table_output.append(' '.join(field_output))
-        for field_constraints in opts.unique_together:
-            table_output.append(style.SQL_KEYWORD('UNIQUE') + ' (%s)' %
-                ", ".join(
-                    [style.SQL_FIELD(qn(opts.get_field(f).column))
-                     for f in field_constraints]))
-
-        full_statement = [style.SQL_KEYWORD('CREATE TABLE') + ' ' +
-                          style.SQL_TABLE(qn(opts.db_table)) + ' (']
-        for i, line in enumerate(table_output):  # Combine and add commas.
-            full_statement.append(
-                '    %s%s' % (line, ',' if i < len(table_output) - 1 else ''))
-        full_statement.append(')')
-        if opts.db_tablespace:
-            tablespace_sql = self.connection.ops.tablespace_sql(
-                opts.db_tablespace)
-            if tablespace_sql:
-                full_statement.append(tablespace_sql)
-        full_statement.append(';')
-        final_output.append('\n'.join(full_statement))
-
-        if opts.has_auto_field:
-            # Add any extra SQL needed to support auto-incrementing primary
-            # keys.
-            auto_column = opts.auto_field.db_column or opts.auto_field.name
-            autoinc_sql = self.connection.ops.autoinc_sql(opts.db_table,
-                                                          auto_column)
-            if autoinc_sql:
-                for stmt in autoinc_sql:
-                    final_output.append(stmt)
-
-        return final_output, pending_references
-
-    def sql_for_inline_foreign_key_references(self, model, field, known_models, style):
-        """
-        Return the SQL snippet defining the foreign key reference for a field.
-        """
-        qn = self.connection.ops.quote_name
-        rel_to = field.rel.to
-        if rel_to in known_models or rel_to == model:
-            output = [style.SQL_KEYWORD('REFERENCES') + ' ' +
-                style.SQL_TABLE(qn(rel_to._meta.db_table)) + ' (' +
-                style.SQL_FIELD(qn(rel_to._meta.get_field(
-                    field.rel.field_name).column)) + ')' +
-                self.connection.ops.deferrable_sql()
-            ]
-            pending = False
-        else:
-            # We haven't yet created the table to which this field
-            # is related, so save it for later.
-            output = []
-            pending = True
-
-        return output, pending
-
-    def sql_for_pending_references(self, model, style, pending_references):
-        """
-        Returns any ALTER TABLE statements to add constraints after the fact.
-        """
-        opts = model._meta
-        if not opts.managed or opts.swapped:
-            return []
-        qn = self.connection.ops.quote_name
-        final_output = []
-        if model in pending_references:
-            for rel_class, f in pending_references[model]:
-                rel_opts = rel_class._meta
-                r_table = rel_opts.db_table
-                r_col = f.column
-                table = opts.db_table
-                col = opts.get_field(f.rel.field_name).column
-                # For MySQL, r_name must be unique in the first 64 characters.
-                # So we are careful with character usage here.
-                r_name = '%s_refs_%s_%s' % (
-                    r_col, col, self._digest(r_table, table))
-                final_output.append(style.SQL_KEYWORD('ALTER TABLE') +
-                    ' %s ADD CONSTRAINT %s FOREIGN KEY (%s) REFERENCES %s (%s)%s;' %
-                    (qn(r_table), qn(truncate_name(
-                        r_name, self.connection.ops.max_name_length())),
-                    qn(r_col), qn(table), qn(col),
-                    self.connection.ops.deferrable_sql()))
-            del pending_references[model]
-        return final_output
-
-    def sql_indexes_for_model(self, model, style):
-        """
-        Returns the CREATE INDEX SQL statements for a single model.
-        """
-        warnings.warn("DatabaseCreation.sql_indexes_for_model is deprecated, "
-                      "use the equivalent method of the schema editor instead.",
-                      RemovedInDjango20Warning)
-        if not model._meta.managed or model._meta.proxy or model._meta.swapped:
-            return []
-        output = []
-        for f in model._meta.local_fields:
-            output.extend(self.sql_indexes_for_field(model, f, style))
-        for fs in model._meta.index_together:
-            fields = [model._meta.get_field(f) for f in fs]
-            output.extend(self.sql_indexes_for_fields(model, fields, style))
-        return output
-
-    def sql_indexes_for_field(self, model, f, style):
-        """
-        Return the CREATE INDEX SQL statements for a single model field.
-        """
-        if f.db_index and not f.unique:
-            return self.sql_indexes_for_fields(model, [f], style)
-        else:
-            return []
-
-    def sql_indexes_for_fields(self, model, fields, style):
-        if len(fields) == 1 and fields[0].db_tablespace:
-            tablespace_sql = self.connection.ops.tablespace_sql(fields[0].db_tablespace)
-        elif model._meta.db_tablespace:
-            tablespace_sql = self.connection.ops.tablespace_sql(model._meta.db_tablespace)
-        else:
-            tablespace_sql = ""
-        if tablespace_sql:
-            tablespace_sql = " " + tablespace_sql
-
-        field_names = []
-        qn = self.connection.ops.quote_name
-        for f in fields:
-            field_names.append(style.SQL_FIELD(qn(f.column)))
-
-        index_name = "%s_%s" % (model._meta.db_table, self._digest([f.name for f in fields]))
-
-        return [
-            style.SQL_KEYWORD("CREATE INDEX") + " " +
-            style.SQL_TABLE(qn(truncate_name(index_name, self.connection.ops.max_name_length()))) + " " +
-            style.SQL_KEYWORD("ON") + " " +
-            style.SQL_TABLE(qn(model._meta.db_table)) + " " +
-            "(%s)" % style.SQL_FIELD(", ".join(field_names)) +
-            "%s;" % tablespace_sql,
-        ]
-
-    def sql_destroy_model(self, model, references_to_delete, style):
-        """
-        Return the DROP TABLE and restraint dropping statements for a single
-        model.
-        """
-        if not model._meta.managed or model._meta.proxy or model._meta.swapped:
-            return []
-        # Drop the table now
-        qn = self.connection.ops.quote_name
-        output = ['%s %s;' % (style.SQL_KEYWORD('DROP TABLE'),
-                              style.SQL_TABLE(qn(model._meta.db_table)))]
-        if model in references_to_delete:
-            output.extend(self.sql_remove_table_constraints(
-                model, references_to_delete, style))
-        if model._meta.has_auto_field:
-            ds = self.connection.ops.drop_sequence_sql(model._meta.db_table)
-            if ds:
-                output.append(ds)
-        return output
-
-    def sql_remove_table_constraints(self, model, references_to_delete, style):
-        if not model._meta.managed or model._meta.proxy or model._meta.swapped:
-            return []
-        output = []
-        qn = self.connection.ops.quote_name
-        for rel_class, f in references_to_delete[model]:
-            table = rel_class._meta.db_table
-            col = f.column
-            r_table = model._meta.db_table
-            r_col = model._meta.get_field(f.rel.field_name).column
-            r_name = '%s_refs_%s_%s' % (
-                col, r_col, self._digest(table, r_table))
-            output.append('%s %s %s %s;' % (
-                style.SQL_KEYWORD('ALTER TABLE'),
-                style.SQL_TABLE(qn(table)),
-                style.SQL_KEYWORD(self.connection.ops.drop_foreignkey_sql()),
-                style.SQL_FIELD(qn(truncate_name(
-                    r_name, self.connection.ops.max_name_length())))
-            ))
-        del references_to_delete[model]
-        return output
-
-    def sql_destroy_indexes_for_model(self, model, style):
-        """
-        Returns the DROP INDEX SQL statements for a single model.
-        """
-        if not model._meta.managed or model._meta.proxy or model._meta.swapped:
-            return []
-        output = []
-        for f in model._meta.local_fields:
-            output.extend(self.sql_destroy_indexes_for_field(model, f, style))
-        for fs in model._meta.index_together:
-            fields = [model._meta.get_field(f) for f in fs]
-            output.extend(self.sql_destroy_indexes_for_fields(model, fields, style))
-        return output
-
-    def sql_destroy_indexes_for_field(self, model, f, style):
-        """
-        Return the DROP INDEX SQL statements for a single model field.
-        """
-        if f.db_index and not f.unique:
-            return self.sql_destroy_indexes_for_fields(model, [f], style)
-        else:
-            return []
-
-    def sql_destroy_indexes_for_fields(self, model, fields, style):
-        if len(fields) == 1 and fields[0].db_tablespace:
-            tablespace_sql = self.connection.ops.tablespace_sql(fields[0].db_tablespace)
-        elif model._meta.db_tablespace:
-            tablespace_sql = self.connection.ops.tablespace_sql(model._meta.db_tablespace)
-        else:
-            tablespace_sql = ""
-        if tablespace_sql:
-            tablespace_sql = " " + tablespace_sql
-
-        field_names = []
-        qn = self.connection.ops.quote_name
-        for f in fields:
-            field_names.append(style.SQL_FIELD(qn(f.column)))
-
-        index_name = "%s_%s" % (model._meta.db_table, self._digest([f.name for f in fields]))
-
-        return [
-            style.SQL_KEYWORD("DROP INDEX") + " " +
-            style.SQL_TABLE(qn(truncate_name(index_name, self.connection.ops.max_name_length()))) + " " +
-            ";",
-        ]
-
     def create_test_db(self, verbosity=1, autoclobber=False, serialize=True, keepdb=False):
         """
         Creates a test database, prompting the user for confirmation if the
diff --git a/django/db/backends/mysql/creation.py b/django/db/backends/mysql/creation.py
index 5749f9da49..aba9e8b841 100644
--- a/django/db/backends/mysql/creation.py
+++ b/django/db/backends/mysql/creation.py
@@ -11,33 +11,3 @@ class DatabaseCreation(BaseDatabaseCreation):
         if test_settings['COLLATION']:
             suffix.append('COLLATE %s' % test_settings['COLLATION'])
         return ' '.join(suffix)
-
-    def sql_for_inline_foreign_key_references(self, model, field, known_models, style):
-        "All inline references are pending under MySQL"
-        return [], True
-
-    def sql_destroy_indexes_for_fields(self, model, fields, style):
-        if len(fields) == 1 and fields[0].db_tablespace:
-            tablespace_sql = self.connection.ops.tablespace_sql(fields[0].db_tablespace)
-        elif model._meta.db_tablespace:
-            tablespace_sql = self.connection.ops.tablespace_sql(model._meta.db_tablespace)
-        else:
-            tablespace_sql = ""
-        if tablespace_sql:
-            tablespace_sql = " " + tablespace_sql
-
-        field_names = []
-        qn = self.connection.ops.quote_name
-        for f in fields:
-            field_names.append(style.SQL_FIELD(qn(f.column)))
-
-        index_name = "%s_%s" % (model._meta.db_table, self._digest([f.name for f in fields]))
-
-        from ..utils import truncate_name
-
-        return [
-            style.SQL_KEYWORD("DROP INDEX") + " " +
-            style.SQL_TABLE(qn(truncate_name(index_name, self.connection.ops.max_name_length()))) + " " +
-            style.SQL_KEYWORD("ON") + " " +
-            style.SQL_TABLE(qn(model._meta.db_table)) + ";",
-        ]
diff --git a/django/db/backends/postgresql_psycopg2/creation.py b/django/db/backends/postgresql_psycopg2/creation.py
index 128c2ce95a..13eea0d3b7 100644
--- a/django/db/backends/postgresql_psycopg2/creation.py
+++ b/django/db/backends/postgresql_psycopg2/creation.py
@@ -1,5 +1,4 @@
 from django.db.backends.base.creation import BaseDatabaseCreation
-from django.db.backends.utils import truncate_name
 
 
 class DatabaseCreation(BaseDatabaseCreation):
@@ -12,40 +11,3 @@ class DatabaseCreation(BaseDatabaseCreation):
         if test_settings['CHARSET']:
             return "WITH ENCODING '%s'" % test_settings['CHARSET']
         return ''
-
-    def sql_indexes_for_field(self, model, f, style):
-        output = []
-        db_type = f.db_type(connection=self.connection)
-        if db_type is not None and (f.db_index or f.unique):
-            qn = self.connection.ops.quote_name
-            db_table = model._meta.db_table
-            tablespace = f.db_tablespace or model._meta.db_tablespace
-            if tablespace:
-                tablespace_sql = self.connection.ops.tablespace_sql(tablespace)
-                if tablespace_sql:
-                    tablespace_sql = ' ' + tablespace_sql
-            else:
-                tablespace_sql = ''
-
-            def get_index_sql(index_name, opclass=''):
-                return (style.SQL_KEYWORD('CREATE INDEX') + ' ' +
-                        style.SQL_TABLE(qn(truncate_name(index_name, self.connection.ops.max_name_length()))) + ' ' +
-                        style.SQL_KEYWORD('ON') + ' ' +
-                        style.SQL_TABLE(qn(db_table)) + ' ' +
-                        "(%s%s)" % (style.SQL_FIELD(qn(f.column)), opclass) +
-                        "%s;" % tablespace_sql)
-
-            if not f.unique:
-                output = [get_index_sql('%s_%s' % (db_table, f.column))]
-
-            # Fields with database column types of `varchar` and `text` need
-            # a second index that specifies their operator class, which is
-            # needed when performing correct LIKE queries outside the
-            # C locale. See #12234.
-            if db_type.startswith('varchar'):
-                output.append(get_index_sql('%s_%s_like' % (db_table, f.column),
-                                            ' varchar_pattern_ops'))
-            elif db_type.startswith('text'):
-                output.append(get_index_sql('%s_%s_like' % (db_table, f.column),
-                                            ' text_pattern_ops'))
-        return output
diff --git a/django/db/backends/sqlite3/creation.py b/django/db/backends/sqlite3/creation.py
index 3632e656e0..d8fde0c9b7 100644
--- a/django/db/backends/sqlite3/creation.py
+++ b/django/db/backends/sqlite3/creation.py
@@ -8,14 +8,6 @@ from django.utils.six.moves import input
 
 class DatabaseCreation(BaseDatabaseCreation):
 
-    def sql_for_pending_references(self, model, style, pending_references):
-        "SQLite3 doesn't support constraints"
-        return []
-
-    def sql_remove_table_constraints(self, model, references_to_delete, style):
-        "SQLite3 doesn't support constraints"
-        return []
-
     def _get_test_db_name(self):
         test_database_name = self.connection.settings_dict['TEST']['NAME']
         if test_database_name and test_database_name != ':memory:':
diff --git a/tests/indexes/tests.py b/tests/indexes/tests.py
index 1d60f215fe..95de0a2963 100644
--- a/tests/indexes/tests.py
+++ b/tests/indexes/tests.py
@@ -1,48 +1,11 @@
 from unittest import skipUnless
 
-from django.core.management.color import no_style
 from django.db import connection
-from django.test import TestCase, ignore_warnings
-from django.utils.deprecation import RemovedInDjango20Warning
+from django.test import TestCase
 
 from .models import Article, ArticleTranslation, IndexTogetherSingleList
 
 
-@ignore_warnings(category=RemovedInDjango20Warning)
-class CreationIndexesTests(TestCase):
-    """
-    Test index handling by the to-be-deprecated connection.creation interface.
-    """
-    def test_index_together(self):
-        index_sql = connection.creation.sql_indexes_for_model(Article, no_style())
-        self.assertEqual(len(index_sql), 1)
-
-    def test_index_together_single_list(self):
-        # Test for using index_together with a single list (#22172)
-        index_sql = connection.creation.sql_indexes_for_model(IndexTogetherSingleList, no_style())
-        self.assertEqual(len(index_sql), 1)
-
-    @skipUnless(connection.vendor == 'postgresql',
-        "This is a postgresql-specific issue")
-    def test_postgresql_text_indexes(self):
-        """Test creation of PostgreSQL-specific text indexes (#12234)"""
-        from .models import IndexedArticle
-        index_sql = connection.creation.sql_indexes_for_model(IndexedArticle, no_style())
-        self.assertEqual(len(index_sql), 5)
-        self.assertIn('("headline" varchar_pattern_ops)', index_sql[1])
-        self.assertIn('("body" text_pattern_ops)', index_sql[3])
-        # unique=True and db_index=True should only create the varchar-specific
-        # index (#19441).
-        self.assertIn('("slug" varchar_pattern_ops)', index_sql[4])
-
-    @skipUnless(connection.vendor == 'postgresql',
-        "This is a postgresql-specific issue")
-    def test_postgresql_virtual_relation_indexes(self):
-        """Test indexes are not created for related objects"""
-        index_sql = connection.creation.sql_indexes_for_model(Article, no_style())
-        self.assertEqual(len(index_sql), 1)
-
-
 class SchemaIndexesTests(TestCase):
     """
     Test index handling by the db.backends.schema infrastructure.