added files

Author: xanthium-enterprises

code/_5_Sqlite3_UPDATE.py

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+#updating the SQLite table data using UPDATE
+
+import sqlite3
+
+# New data that will be used to update.
+new_temp1 = 2900.5
+new_temp2 = 3500.0
+new_temp3 = 2800.7
+
+timestamp_to_update = 1746599012  # time stamp of the first row 
+
+update_data_sql_query = '''
+                            UPDATE data_logger
+                            SET Temp_Sensor1 = ?, Temp_Sensor2 = ?, Temp_Sensor3 = ?
+                            WHERE TimeStamp = ?
+                         '''
+
+# Connect to database
+with sqlite3.connect("datalogger.sqlite") as connnection_object:
+    cursor_object = connnection_object.cursor()
+    
+   
+    
+    cursor_object.execute(update_data_sql_query, (new_temp1, new_temp2, new_temp3, timestamp_to_update))
+    connnection_object.commit()
+
+    if cursor_object.rowcount > 0:
+        print("Row updated successfully.")
+    else:
+        print("No row found with the given timestamp.")

code/_6_Sqlite3_DELETE_Row.py

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+#deleting a row using Python and SQLite 
+
+import sqlite3
+
+timestamp_to_delete = 1746705380  # time stamp of the first row
+
+delete_sql_query    = "DELETE FROM data_logger WHERE TimeStamp = ?"
+
+with sqlite3.connect("datalogger.sqlite") as connnection_object:
+    cursor_object = connnection_object.cursor()
+    
+    
+    cursor_object.execute(delete_sql_query, (timestamp_to_delete,))
+    
+    connnection_object.commit()
+
+    if cursor_object.rowcount > 0:
+        print(f"{cursor_object.rowcount} row(s) deleted.")
+    else:
+        print("No row found with that timestamp.")

code/_7_Sqlite3_Table_Schema.py

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+#Retrieve the Schema of a Table Using Python
+
+import sqlite3
+
+# Connect to the SQLite database
+with sqlite3.connect("datalogger.sqlite") as connnection_object:
+    cursor_object = connnection_object.cursor()
+
+    # Query the schema of a specific table (e.g., 'data_logger')
+    cursor_object.execute("""
+        SELECT sql FROM sqlite_master 
+        WHERE type='table' AND name='data_logger'
+    """)
+    
+    result = cursor_object.fetchone()
+
+    if result:
+        print("Schema for 'data_logger':\n")
+        print(result[0])  # This is the CREATE TABLE statement
+        
+    else:
+        print("Table 'data_logger' not found.")