database_practice.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "id": "b88f53cd",
   "metadata": {},
   "outputs": [],
   "source": [
    "import sqlite3 as sql"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "id": "89700a8d",
   "metadata": {},
   "outputs": [],
   "source": [
    "db=sql.connect('mypythondatabase.db')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "id": "cecbe071",
   "metadata": {},
   "outputs": [],
   "source": [
    "cur=db.cursor()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "id": "ff2bc1ad",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "<sqlite3.Cursor at 0x212e14db030>"
      ]
     },
     "execution_count": 4,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "cur.execute(\"create table user (id int, name varchar(25),city varchar(30))\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "id": "0109e477",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "<sqlite3.Cursor at 0x212e14db030>"
      ]
     },
     "execution_count": 6,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "cur.execute('''insert into user(id,name,city) values(1,\"naresh\",\"Rani\")''')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "id": "9612ec30",
   "metadata": {},
   "outputs": [],
   "source": [
    "db.commit()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "id": "8301de5b",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "<sqlite3.Cursor at 0x212e14db030>"
      ]
     },
     "execution_count": 8,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "cur.execute(\"select * from user\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "id": "a0ddc16a",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[(1, 'naresh', 'Rani')]"
      ]
     },
     "execution_count": 9,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "cur.fetchall()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "id": "7cbc5ed1",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "<sqlite3.Cursor at 0x212e14db030>"
      ]
     },
     "execution_count": 13,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "cur.execute('''insert into user(id,name,city)values(2,\"Kailash\",\"pali\")''')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 14,
   "id": "3ec51819",
   "metadata": {},
   "outputs": [],
   "source": [
    "db.commit()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 18,
   "id": "5544a85c",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "<sqlite3.Cursor at 0x212e14db030>"
      ]
     },
     "execution_count": 18,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "cur.execute(\"select * from user\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "id": "82e08495",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[(1, 'naresh', 'Rani'), (2, 'Kailash', 'pali'), (2, 'Kailash', 'pali')]"
      ]
     },
     "execution_count": 16,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "cur.fetchall()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 17,
   "id": "f46236d2",
   "metadata": {},
   "outputs": [
    {
     "ename": "OperationalError",
     "evalue": "near \"kailash\": syntax error",
     "output_type": "error",
     "traceback": [
      "\u001b[1;31m---------------------------------------------------------------------------\u001b[0m",
      "\u001b[1;31mOperationalError\u001b[0m                          Traceback (most recent call last)",
      "Input \u001b[1;32mIn [17]\u001b[0m, in \u001b[0;36m<cell line: 1>\u001b[1;34m()\u001b[0m\n\u001b[1;32m----> 1\u001b[0m \u001b[43mcur\u001b[49m\u001b[38;5;241;43m.\u001b[39;49m\u001b[43mexecute\u001b[49m\u001b[43m(\u001b[49m\u001b[38;5;124;43m\"\u001b[39;49m\u001b[38;5;124;43mdelete kailash from user\u001b[39;49m\u001b[38;5;124;43m\"\u001b[39;49m\u001b[43m)\u001b[49m\n",
      "\u001b[1;31mOperationalError\u001b[0m: near \"kailash\": syntax error"
     ]
    }
   ],
   "source": [
    "cur.execute(\"delete kailash from user\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 19,
   "id": "b03aed9f",
   "metadata": {},
   "outputs": [],
   "source": [
    "data=cur.fetchall()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 20,
   "id": "d2d98f18",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[(1, 'naresh', 'Rani'), (2, 'Kailash', 'pali'), (2, 'Kailash', 'pali')]"
      ]
     },
     "execution_count": 20,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "data"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 21,
   "id": "8a0bc8cc",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "<sqlite3.Cursor at 0x212e14db030>"
      ]
     },
     "execution_count": 21,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "cur.execute(\"delete from user where id=2;\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 22,
   "id": "4608e3ae",
   "metadata": {},
   "outputs": [],
   "source": [
    "db.commit()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 23,
   "id": "095783aa",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "<sqlite3.Cursor at 0x212e14db030>"
      ]
     },
     "execution_count": 23,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "cur.execute(\"select * from user\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 24,
   "id": "33f5d64a",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[(1, 'naresh', 'Rani')]"
      ]
     },
     "execution_count": 24,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "cur.fetchall()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 26,
   "id": "71fdd62d",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "<sqlite3.Cursor at 0x212e14db030>"
      ]
     },
     "execution_count": 26,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "cur.execute(\"insert into user(id,name,city)values(2,'kailash','Rani')\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 27,
   "id": "9216eefd",
   "metadata": {},
   "outputs": [],
   "source": [
    "db.commit()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 28,
   "id": "1caac7e4",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "<sqlite3.Cursor at 0x212e14db030>"
      ]
     },
     "execution_count": 28,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "cur.execute(\"select * from user\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 29,
   "id": "8a34b542",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[(1, 'naresh', 'Rani'), (2, 'kailash', 'Rani')]"
      ]
     },
     "execution_count": 29,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "cur.fetchall()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "34d5bfb3",
   "metadata": {},
   "outputs": [],
   "source": []
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Python 3 (ipykernel)",
   "language": "python",
   "name": "python3"
  },
  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
    "version": 3
   },
   "file_extension": ".py",
   "mimetype": "text/x-python",
   "name": "python",
   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
   "version": "3.9.12"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 5
}