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Primeri z SQLAlchemy s predavanj
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-109
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3 files changed

+1002
-109
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‎predavanja/primeri/orm/Banka.ipynb‎

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},
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{
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"cell_type": "code",
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"execution_count": null,
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"execution_count": 1,
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"metadata": {},
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"outputs": [],
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"source": [
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},
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{
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"cell_type": "code",
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"execution_count": 2,
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"metadata": {},
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"outputs": [],
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},
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"cell_type": "code",
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"execution_count": null,
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"execution_count": 3,
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"metadata": {},
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"source": [
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},
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"cell_type": "code",
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"execution_count": 4,
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"metadata": {},
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"outputs": [],
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"source": [
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"execution_count": 5,
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"metadata": {},
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"outputs": [],
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"2025-06-05 10:24:27,533 INFO sqlalchemy.engine.Engine BEGIN (implicit)\n",
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"2025-06-05 10:24:27,534 INFO sqlalchemy.engine.Engine PRAGMA main.table_info(\"kraj\")\n",
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"2025-06-05 10:24:27,535 INFO sqlalchemy.engine.Engine [raw sql] ()\n",
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"2025-06-05 10:24:27,536 INFO sqlalchemy.engine.Engine PRAGMA temp.table_info(\"kraj\")\n",
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"2025-06-05 10:24:27,537 INFO sqlalchemy.engine.Engine [raw sql] ()\n",
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"2025-06-05 10:24:27,537 INFO sqlalchemy.engine.Engine PRAGMA main.table_info(\"oseba\")\n",
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"2025-06-05 10:24:27,538 INFO sqlalchemy.engine.Engine [raw sql] ()\n",
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"2025-06-05 10:24:27,538 INFO sqlalchemy.engine.Engine PRAGMA temp.table_info(\"oseba\")\n",
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"2025-06-05 10:24:27,539 INFO sqlalchemy.engine.Engine [raw sql] ()\n",
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"2025-06-05 10:24:27,540 INFO sqlalchemy.engine.Engine \n",
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"CREATE TABLE kraj (\n",
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"\tposta INTEGER NOT NULL, \n",
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"\tkraj VARCHAR(250), \n",
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"\tPRIMARY KEY (posta)\n",
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")\n",
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"\n",
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"\n",
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"2025-06-05 10:24:27,540 INFO sqlalchemy.engine.Engine [no key 0.00036s] ()\n",
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"2025-06-05 10:24:27,553 INFO sqlalchemy.engine.Engine \n",
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"CREATE TABLE oseba (\n",
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"\tid INTEGER NOT NULL, \n",
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"\time VARCHAR(250) NOT NULL, \n",
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"\tkraj_id INTEGER, \n",
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"\tPRIMARY KEY (id), \n",
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"\tFOREIGN KEY(kraj_id) REFERENCES kraj (posta)\n",
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")\n",
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"\n",
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"\n",
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"2025-06-05 10:24:27,554 INFO sqlalchemy.engine.Engine [no key 0.00053s] ()\n",
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"2025-06-05 10:24:27,561 INFO sqlalchemy.engine.Engine COMMIT\n"
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]
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}
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],
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"source": [
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"Base.metadata.create_all(engine)"
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]
@@ -120,7 +157,7 @@
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"execution_count": 6,
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"metadata": {},
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"outputs": [],
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"source": [
@@ -137,7 +174,7 @@
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"execution_count": 7,
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"metadata": {},
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"outputs": [],
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"source": [
@@ -154,9 +191,20 @@
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"execution_count": 8,
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"metadata": {},
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"outputs": [],
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"2025-06-05 10:26:17,095 INFO sqlalchemy.engine.Engine BEGIN (implicit)\n",
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"2025-06-05 10:26:17,096 INFO sqlalchemy.engine.Engine INSERT INTO kraj (posta, kraj) VALUES (?, ?)\n",
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"2025-06-05 10:26:17,097 INFO sqlalchemy.engine.Engine [generated in 0.00077s] (1000, 'Ljubljana')\n",
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"2025-06-05 10:26:17,098 INFO sqlalchemy.engine.Engine COMMIT\n"
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]
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}
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],
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"source": [
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"session.commit()"
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]
@@ -170,9 +218,24 @@
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"execution_count": 9,
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"metadata": {},
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"outputs": [],
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"2025-06-05 10:27:44,851 INFO sqlalchemy.engine.Engine BEGIN (implicit)\n",
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"2025-06-05 10:27:44,854 INFO sqlalchemy.engine.Engine SELECT kraj.posta AS kraj_posta, kraj.kraj AS kraj_kraj \n",
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"FROM kraj \n",
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"WHERE kraj.posta = ?\n",
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"2025-06-05 10:27:44,855 INFO sqlalchemy.engine.Engine [generated in 0.00063s] (1000,)\n",
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"2025-06-05 10:27:44,857 INFO sqlalchemy.engine.Engine INSERT INTO oseba (ime, kraj_id) VALUES (?, ?)\n",
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"2025-06-05 10:27:44,857 INFO sqlalchemy.engine.Engine [generated in 0.00047s] ('Janez', 1000)\n",
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"2025-06-05 10:27:44,858 INFO sqlalchemy.engine.Engine COMMIT\n"
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]
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}
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],
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"source": [
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"nova_oseba = Oseba(ime='Janez', kraj=nov_kraj)\n",
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"session.add(nova_oseba)\n",
@@ -188,9 +251,30 @@
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"execution_count": 10,
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"metadata": {},
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"outputs": [],
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"2025-06-05 10:29:22,518 INFO sqlalchemy.engine.Engine BEGIN (implicit)\n",
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"2025-06-05 10:29:22,520 INFO sqlalchemy.engine.Engine SELECT oseba.id AS oseba_id, oseba.ime AS oseba_ime, oseba.kraj_id AS oseba_kraj_id \n",
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"FROM oseba\n",
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"2025-06-05 10:29:22,521 INFO sqlalchemy.engine.Engine [generated in 0.00096s] ()\n"
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]
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},
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{
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"data": {
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"text/plain": [
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"[<__main__.Oseba at 0x78c870397980>]"
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]
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},
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"execution_count": 10,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"session.query(Oseba).all()"
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]
@@ -204,9 +288,22 @@
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"execution_count": 11,
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"metadata": {},
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"outputs": [],
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"2025-06-05 10:29:41,154 INFO sqlalchemy.engine.Engine SELECT kraj.posta AS kraj_posta, kraj.kraj AS kraj_kraj \n",
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"FROM kraj\n",
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" LIMIT ? OFFSET ?\n",
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"2025-06-05 10:29:41,155 INFO sqlalchemy.engine.Engine [generated in 0.00130s] (1, 0)\n",
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"<__main__.Kraj object at 0x78c872aa1100>\n",
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"KRAJ: Ljubljana\n"
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]
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}
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],
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"source": [
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"kraj1 = session.query(Kraj).first()\n",
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"print(kraj1)\n",
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"execution_count": 12,
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"metadata": {},
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"outputs": [],
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"2025-06-05 10:30:53,518 INFO sqlalchemy.engine.Engine SELECT oseba.id AS oseba_id, oseba.ime AS oseba_ime, oseba.kraj_id AS oseba_kraj_id \n",
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"FROM oseba \n",
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"WHERE ? = oseba.kraj_id\n",
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"2025-06-05 10:30:53,519 INFO sqlalchemy.engine.Engine [generated in 0.00107s] (1000,)\n"
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]
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},
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{
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"data": {
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"text/plain": [
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"[<__main__.Oseba at 0x78c870397980>]"
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]
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},
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"execution_count": 12,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"session.query(Oseba).filter(Oseba.kraj == kraj1).all()"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"execution_count": 13,
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"metadata": {},
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"outputs": [],
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"2025-06-05 10:31:23,067 INFO sqlalchemy.engine.Engine SELECT oseba.id AS oseba_id, oseba.ime AS oseba_ime, oseba.kraj_id AS oseba_kraj_id \n",
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"FROM oseba \n",
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"WHERE ? = oseba.kraj_id\n",
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"2025-06-05 10:31:23,068 INFO sqlalchemy.engine.Engine [cached since 29.55s ago] (1000,)\n",
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"<__main__.Oseba object at 0x78c870397980>\n",
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"IME: Janez\n",
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"KRAJ: <__main__.Kraj object at 0x78c872aa1100>\n"
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]
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}
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],
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"source": [
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"oseba1 = session.query(Oseba).filter(Oseba.kraj == kraj1).one()\n",
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"print(oseba1)\n",
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],
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"metadata": {
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"kernelspec": {
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"display_name": "Python 3",
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"display_name": "Python 3 (ipykernel)",
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"language": "python",
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"name": "python3"
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},

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