docs: Update postgres docs with info to retain full row (#422)

* show records with op_type d

* updated the line in the node

Author: nayanj98

docs/connectors/postgres/setup/aurora.mdx

@@ -199,6 +199,14 @@ ALTER PUBLICATION olake_publication ADD TABLE test_table;
 INSERT INTO test_table (data) VALUES ('PostgreSQL pgoutput CDC test - INSERT');
 ```
 
+:::note Delete records and full row values
+By default, WAL only includes the primary key on deletes. In OLake, delete records (`_op_type = 'd'`) will therefore only retain the primary key and OLake metadata columns — other columns appear blank or null. To retain the full deleted row run the following query:
+
+```sql
+ALTER TABLE test_table REPLICA IDENTITY FULL;
+```
+:::
+
 **Check for changes using pg_logical_slot_peek_binary_changes:**
 
 ```sql

docs/connectors/postgres/setup/azure.mdx

@@ -225,6 +225,14 @@ ALTER PUBLICATION olake_publication ADD TABLE test_table;
 INSERT INTO test_table (data) VALUES ('PostgreSQL pgoutput CDC test - INSERT');
 ```
 
+:::note Delete records and full row values
+By default, WAL only includes the primary key on deletes. In OLake, delete records (`_op_type = 'd'`) will therefore only retain the primary key and OLake metadata columns — other columns appear blank or null. To retain the full deleted row run the following query:
+
+```sql
+ALTER TABLE test_table REPLICA IDENTITY FULL;
+```
+:::
+
 **Check for changes using pg_logical_slot_peek_binary_changes:**
 
 ```sql

docs/connectors/postgres/setup/gcp.mdx

@@ -205,6 +205,14 @@ ALTER PUBLICATION olake_publication ADD TABLE test_table;
 INSERT INTO test_table (data) VALUES ('PostgreSQL pgoutput CDC test - INSERT');
 ```
 
+:::note Delete records and full row values
+By default, WAL only includes the primary key on deletes. In OLake, delete records (`_op_type = 'd'`) will therefore only retain the primary key and OLake metadata columns — other columns appear blank or null. To retain the full deleted row run the following query:
+
+```sql
+ALTER TABLE test_table REPLICA IDENTITY FULL;
+```
+:::
+
 **Check for changes using pg_logical_slot_peek_binary_changes:**
 
 ```sql

docs/connectors/postgres/setup/generic.mdx

@@ -151,6 +151,10 @@ ALTER DEFAULT PRIVILEGES IN SCHEMA schema1 GRANT SELECT ON TABLES TO cdc_user;
 - `INDEX`: Uses a specific unique index
 - `NOTHING`: Only INSERT operations are replicated
 
+:::note Delete records and full row values
+By default, WAL only includes the primary key on deletes. In OLake, delete records (`_op_type = 'd'`) will therefore only retain the primary key and OLake metadata columns — other columns appear blank or null. To retain the full deleted row, use **Option 2** below.
+:::
+
 **Set Replica Identity for Tables:**
 
 ```sql

docs/connectors/postgres/setup/rds.mdx

@@ -200,6 +200,14 @@ ALTER PUBLICATION olake_publication ADD TABLE test_table;
 INSERT INTO test_table (data) VALUES ('PostgreSQL pgoutput CDC test - INSERT');
 ```
 
+:::note Delete records and full row values
+By default, WAL only includes the primary key on deletes. In OLake, delete records (`_op_type = 'd'`) will therefore only retain the primary key and OLake metadata columns — other columns appear blank or null. To retain the full deleted row run the following query:
+
+```sql
+ALTER TABLE test_table REPLICA IDENTITY FULL;
+```
+:::
+
 **Check for changes using pg_logical_slot_peek_binary_changes:**
 
 ```sql