diff --git a/web/pgadmin/browser/server_groups/servers/databases/schemas/foreign_tables/templates/foreign_table_columns/sql/default/update.sql b/web/pgadmin/browser/server_groups/servers/databases/schemas/foreign_tables/templates/foreign_table_columns/sql/default/update.sql
index 36f6c6915a7..f93b4325082 100644
--- a/web/pgadmin/browser/server_groups/servers/databases/schemas/foreign_tables/templates/foreign_table_columns/sql/default/update.sql
+++ b/web/pgadmin/browser/server_groups/servers/databases/schemas/foreign_tables/templates/foreign_table_columns/sql/default/update.sql
@@ -35,8 +35,8 @@ ALTER FOREIGN TABLE IF EXISTS {{conn|qtIdent(data.schema, data.table)}}
 -- the current datatype cannot be cast to the target cltype so this conversion cannot be made automatically.
 {% endif %}
 {% if data.col_type_conversion is defined and data.col_type_conversion == False %} -- {% endif %}ALTER FOREIGN TABLE IF EXISTS {{conn|qtIdent(data.schema, data.table)}}
-{% if data.col_type_conversion is defined and data.col_type_conversion == False %} -- {% endif %}    ALTER COLUMN {% if data.name %}{{conn|qtTypeIdent(data.name)}}{% else %}{{conn|qtTypeIdent(o_data.name)}}{% endif %} TYPE {{ GET_TYPE.UPDATE_TYPE_SQL(conn, data, o_data) }}{% if data.collspcname and data.collspcname is not none %}{%if data.collspcname != o_data.collspcname %}
- COLLATE {{data.collspcname}}{% elif data.collspcname is not none and o_data.collspcname %} COLLATE {{o_data.collspcname}}{% endif %}{% endif %};
+{% if data.col_type_conversion is defined and data.col_type_conversion == False %} -- {% endif %}    ALTER COLUMN {% if data.name %}{{conn|qtTypeIdent(data.name)}}{% else %}{{conn|qtTypeIdent(o_data.name)}}{% endif %} TYPE {{ GET_TYPE.UPDATE_TYPE_SQL(conn, data, o_data) }}{% if data.collspcname and data.collspcname != o_data.collspcname and and data.cltype != '"char"' %}
+ COLLATE {{data.collspcname}}{% elif o_data.collspcname and data.cltype != '"char"' %} COLLATE {{o_data.collspcname}}{% endif %};
 
 {% endif %}
 {###  Alter column default value ###}
diff --git a/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/columns/tests/pg/12_plus/alter_column_char.msql b/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/columns/tests/pg/12_plus/alter_column_char.msql
index 180d25d8638..b34f0e9fb10 100644
--- a/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/columns/tests/pg/12_plus/alter_column_char.msql
+++ b/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/columns/tests/pg/12_plus/alter_column_char.msql
@@ -2,7 +2,7 @@ ALTER TABLE IF EXISTS testschema."table_3_$%{}[]()&*^!@""'`\/#"
     RENAME "col_2_$%{}[]()&*^!@""'`\/#" TO "new_col_2_$%{}[]()&*^!@""'`\/#";
 
 ALTER TABLE testschema."table_3_$%{}[]()&*^!@""'`\/#"
-    ALTER COLUMN "new_col_2_$%{}[]()&*^!@""'`\/#" TYPE character;
+    ALTER COLUMN "new_col_2_$%{}[]()&*^!@""'`\/#" TYPE character COLLATE pg_catalog."C";
 ALTER TABLE IF EXISTS testschema."table_3_$%{}[]()&*^!@""'`\/#"
     ALTER COLUMN "new_col_2_$%{}[]()&*^!@""'`\/#" SET STATISTICS 5;
 
diff --git a/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/columns/tests/pg/12_plus/alter_column_char.sql b/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/columns/tests/pg/12_plus/alter_column_char.sql
index 9a249aed340..6ac8f813c47 100644
--- a/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/columns/tests/pg/12_plus/alter_column_char.sql
+++ b/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/columns/tests/pg/12_plus/alter_column_char.sql
@@ -3,7 +3,7 @@
 -- ALTER TABLE IF EXISTS testschema."table_3_$%{}[]()&*^!@""'`\/#" DROP COLUMN IF EXISTS "new_col_2_$%{}[]()&*^!@""'`\/#";
 
 ALTER TABLE IF EXISTS testschema."table_3_$%{}[]()&*^!@""'`\/#"
-    ADD COLUMN "new_col_2_$%{}[]()&*^!@""'`\/#" character(1) COLLATE pg_catalog."default";
+    ADD COLUMN "new_col_2_$%{}[]()&*^!@""'`\/#" character(1) COLLATE pg_catalog."C";
 
 COMMENT ON COLUMN testschema."table_3_$%{}[]()&*^!@""'`\/#"."new_col_2_$%{}[]()&*^!@""'`\/#"
     IS 'Comment for alter';
diff --git a/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/templates/columns/sql/14_plus/update.sql b/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/templates/columns/sql/14_plus/update.sql
index b3bb12abc76..97009be7361 100644
--- a/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/templates/columns/sql/14_plus/update.sql
+++ b/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/templates/columns/sql/14_plus/update.sql
@@ -17,8 +17,8 @@ ALTER TABLE IF EXISTS {{conn|qtIdent(data.schema, data.table)}}
 
 {% endif %}
 {% if data.col_type_conversion is defined and data.col_type_conversion == False %} -- {% endif %}ALTER TABLE {{conn|qtIdent(data.schema, data.table)}}
-{% if data.col_type_conversion is defined and data.col_type_conversion == False %} -- {% endif %}    ALTER COLUMN {% if data.name %}{{conn|qtTypeIdent(data.name)}}{% else %}{{conn|qtTypeIdent(o_data.name)}}{% endif %} TYPE {{ GET_TYPE.UPDATE_TYPE_SQL(conn, data, o_data) }}{% if data.collspcname and data.collspcname is not none %}{% if data.collspcname != o_data.collspcname %}
- COLLATE {{data.collspcname}}{% elif data.collspcname is not none and o_data.collspcname %} COLLATE {{o_data.collspcname}}{% endif %}{% endif %};
+{% if data.col_type_conversion is defined and data.col_type_conversion == False %} -- {% endif %}    ALTER COLUMN {% if data.name %}{{conn|qtTypeIdent(data.name)}}{% else %}{{conn|qtTypeIdent(o_data.name)}}{% endif %} TYPE {{ GET_TYPE.UPDATE_TYPE_SQL(conn, data, o_data) }}{% if data.collspcname and data.collspcname != o_data.collspcname and data.cltype != '"char"' %}
+ COLLATE {{data.collspcname}}{% elif o_data.collspcname and data.cltype != '"char"' %} COLLATE {{o_data.collspcname}}{% endif %};
 {% endif %}
 {###  Alter column default value ###}
 {% if is_view_only and data.defval is defined and data.defval is not none and data.defval != '' and data.defval != o_data.defval %}
diff --git a/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/templates/columns/sql/16_plus/update.sql b/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/templates/columns/sql/16_plus/update.sql
index 34a8598b77d..3d00b9062d7 100644
--- a/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/templates/columns/sql/16_plus/update.sql
+++ b/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/templates/columns/sql/16_plus/update.sql
@@ -17,8 +17,8 @@ ALTER TABLE IF EXISTS {{conn|qtIdent(data.schema, data.table)}}
 
 {% endif %}
 {% if data.col_type_conversion is defined and data.col_type_conversion == False %} -- {% endif %}ALTER TABLE {{conn|qtIdent(data.schema, data.table)}}
-{% if data.col_type_conversion is defined and data.col_type_conversion == False %} -- {% endif %}    ALTER COLUMN {% if data.name %}{{conn|qtTypeIdent(data.name)}}{% else %}{{conn|qtTypeIdent(o_data.name)}}{% endif %} TYPE {{ GET_TYPE.UPDATE_TYPE_SQL(conn, data, o_data) }}{% if data.collspcname and data.collspcname is not none %}{% if data.collspcname != o_data.collspcname %}
- COLLATE {{data.collspcname}}{% elif o_data.collspcname %} COLLATE {{o_data.collspcname}}{% endif %}{% endif %};
+{% if data.col_type_conversion is defined and data.col_type_conversion == False %} -- {% endif %}    ALTER COLUMN {% if data.name %}{{conn|qtTypeIdent(data.name)}}{% else %}{{conn|qtTypeIdent(o_data.name)}}{% endif %} TYPE {{ GET_TYPE.UPDATE_TYPE_SQL(conn, data, o_data) }}{% if data.collspcname and data.collspcname != o_data.collspcname and data.cltype != '"char"' %}
+ COLLATE {{data.collspcname}}{% elif o_data.collspcname and data.cltype != '"char"' %} COLLATE {{o_data.collspcname}}{% endif %};
 {% endif %}
 {###  Alter column default value ###}
 {% if is_view_only and data.defval is defined and data.defval is not none and data.defval != '' and data.defval != o_data.defval %}
diff --git a/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/templates/columns/sql/default/update.sql b/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/templates/columns/sql/default/update.sql
index a52f4ca061c..34445e3c2ac 100644
--- a/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/templates/columns/sql/default/update.sql
+++ b/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/templates/columns/sql/default/update.sql
@@ -17,8 +17,8 @@ ALTER TABLE IF EXISTS {{conn|qtIdent(data.schema, data.table)}}
 
 {% endif %}
 {% if data.col_type_conversion is defined and data.col_type_conversion == False %} -- {% endif %}ALTER TABLE {{conn|qtIdent(data.schema, data.table)}}
-{% if data.col_type_conversion is defined and data.col_type_conversion == False %} -- {% endif %}    ALTER COLUMN {% if data.name %}{{conn|qtTypeIdent(data.name)}}{% else %}{{conn|qtTypeIdent(o_data.name)}}{% endif %} TYPE {{ GET_TYPE.UPDATE_TYPE_SQL(conn, data, o_data) }}{% if data.collspcname and data.collspcname is not none %}{%if data.collspcname != o_data.collspcname %}
- COLLATE {{data.collspcname}}{% elif data.collspcname is not none and o_data.collspcname %} COLLATE {{o_data.collspcname}}{% endif %}{% endif %};
+{% if data.col_type_conversion is defined and data.col_type_conversion == False %} -- {% endif %}    ALTER COLUMN {% if data.name %}{{conn|qtTypeIdent(data.name)}}{% else %}{{conn|qtTypeIdent(o_data.name)}}{% endif %} TYPE {{ GET_TYPE.UPDATE_TYPE_SQL(conn, data, o_data) }}{%if data.collspcname and data.collspcname != o_data.collspcname and data.cltype != '"char"' %}
+ COLLATE {{data.collspcname}}{% elif o_data.collspcname and data.cltype != '"char"' %} COLLATE {{o_data.collspcname}}{% endif %};
 {% endif %}
 {###  Alter column default value ###}
 {% if is_view_only and data.defval is defined and data.defval is not none and data.defval != '' and data.defval != o_data.defval %}
diff --git a/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/tests/pg/12_plus/alter_table_change_col_data_type_msql.sql b/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/tests/pg/12_plus/alter_table_change_col_data_type_msql.sql
index 309ac306a80..290f242443f 100644
--- a/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/tests/pg/12_plus/alter_table_change_col_data_type_msql.sql
+++ b/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/tests/pg/12_plus/alter_table_change_col_data_type_msql.sql
@@ -2,7 +2,7 @@ ALTER TABLE public."simple_table_$%{}[]()&*^!@""'`\/#"
     ALTER COLUMN col1 TYPE bigint;
 
 ALTER TABLE public."simple_table_$%{}[]()&*^!@""'`\/#"
-    ALTER COLUMN col2 TYPE character varying;
+    ALTER COLUMN col2 TYPE character varying COLLATE pg_catalog."default";
 
 ALTER TABLE public."simple_table_$%{}[]()&*^!@""'`\/#"
     ALTER COLUMN col6 TYPE time(5) without time zone ;
diff --git a/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/tests/ppas/12_plus/alter_table_change_col_data_type_msql.sql b/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/tests/ppas/12_plus/alter_table_change_col_data_type_msql.sql
index 309ac306a80..290f242443f 100644
--- a/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/tests/ppas/12_plus/alter_table_change_col_data_type_msql.sql
+++ b/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/tests/ppas/12_plus/alter_table_change_col_data_type_msql.sql
@@ -2,7 +2,7 @@ ALTER TABLE public."simple_table_$%{}[]()&*^!@""'`\/#"
     ALTER COLUMN col1 TYPE bigint;
 
 ALTER TABLE public."simple_table_$%{}[]()&*^!@""'`\/#"
-    ALTER COLUMN col2 TYPE character varying;
+    ALTER COLUMN col2 TYPE character varying COLLATE pg_catalog."default";
 
 ALTER TABLE public."simple_table_$%{}[]()&*^!@""'`\/#"
     ALTER COLUMN col6 TYPE time(5) without time zone ;