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fix sql (#1141)

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Harrison Chase 2023-02-18 11:49:08 -08:00 committed by GitHub
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2 changed files with 69 additions and 65 deletions
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119
docs/modules/chains/examples/sqlite.ipynb
View File

@ -29,7 +29,7 @@
},
{
"cell_type": "code",
"execution_count": 3,
"execution_count": 1,
"id": "d0e27d88",
"metadata": {
"pycharm": {
@ -43,7 +43,7 @@
},
{
"cell_type": "code",
"execution_count": 1,
"execution_count": 2,
"id": "72ede462",
"metadata": {
"pycharm": {
@ -92,7 +92,22 @@
"\n",
"\u001b[1m> Entering new SQLDatabaseChain chain...\u001b[0m\n",
"How many employees are there? \n",
"SQLQuery:\u001b[32;1m\u001b[1;3m SELECT COUNT(*) FROM Employee;\u001b[0m\n",
"SQLQuery:"
]
},
{
"name": "stderr",
"output_type": "stream",
"text": [
"/Users/harrisonchase/workplace/langchain/langchain/sql_database.py:120: SAWarning: Dialect sqlite+pysqlite does *not* support Decimal objects natively, and SQLAlchemy must convert from floating point - rounding errors and other issues may occur. Please consider storing Decimal numbers as strings or integers on this platform for lossless storage.\n",
" sample_rows = connection.execute(command)\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"\u001b[32;1m\u001b[1;3m SELECT COUNT(*) FROM Employee;\u001b[0m\n",
"SQLResult: \u001b[33;1m\u001b[1;3m[(8,)]\u001b[0m\n",
"Answer:\u001b[32;1m\u001b[1;3m There are 8 employees.\u001b[0m\n",
"\u001b[1m> Finished chain.\u001b[0m\n"
@ -285,16 +300,16 @@
"\n",
"\u001b[1m> Entering new SQLDatabaseChain chain...\u001b[0m\n",
"What are some example tracks by composer Johann Sebastian Bach? \n",
"SQLQuery:\u001b[32;1m\u001b[1;3m SELECT Name, Composer FROM Track WHERE Composer = 'Johann Sebastian Bach' LIMIT 3;\u001b[0m\n",
"SQLQuery:\u001b[32;1m\u001b[1;3m SELECT Name, Composer FROM Track WHERE Composer LIKE '%Johann Sebastian Bach%' LIMIT 3;\u001b[0m\n",
"SQLResult: \u001b[33;1m\u001b[1;3m[('Concerto for 2 Violins in D Minor, BWV 1043: I. Vivace', 'Johann Sebastian Bach'), ('Aria Mit 30 Veränderungen, BWV 988 \"Goldberg Variations\": Aria', 'Johann Sebastian Bach'), ('Suite for Solo Cello No. 1 in G Major, BWV 1007: I. Prélude', 'Johann Sebastian Bach')]\u001b[0m\n",
"Answer:\u001b[32;1m\u001b[1;3m Examples of tracks by composer Johann Sebastian Bach are 'Concerto for 2 Violins in D Minor, BWV 1043: I. Vivace', 'Aria Mit 30 Veränderungen, BWV 988 \"Goldberg Variations\": Aria', and 'Suite for Solo Cello No. 1 in G Major, BWV 1007: I. Prélude'.\u001b[0m\n",
"Answer:\u001b[32;1m\u001b[1;3m Some example tracks by composer Johann Sebastian Bach are 'Concerto for 2 Violins in D Minor, BWV 1043: I. Vivace', 'Aria Mit 30 Veränderungen, BWV 988 \"Goldberg Variations\": Aria', and 'Suite for Solo Cello No. 1 in G Major, BWV 1007: I. Prélude'.\u001b[0m\n",
"\u001b[1m> Finished chain.\u001b[0m\n"
]
},
{
"data": {
"text/plain": [
"' Examples of tracks by composer Johann Sebastian Bach are \\'Concerto for 2 Violins in D Minor, BWV 1043: I. Vivace\\', \\'Aria Mit 30 Veränderungen, BWV 988 \"Goldberg Variations\": Aria\\', and \\'Suite for Solo Cello No. 1 in G Major, BWV 1007: I. Prélude\\'.'"
"' Some example tracks by composer Johann Sebastian Bach are \\'Concerto for 2 Violins in D Minor, BWV 1043: I. Vivace\\', \\'Aria Mit 30 Veränderungen, BWV 988 \"Goldberg Variations\": Aria\\', and \\'Suite for Solo Cello No. 1 in G Major, BWV 1007: I. Prélude\\'.'"
]
},
"execution_count": 11,
@ -317,7 +332,7 @@
},
{
"cell_type": "code",
"execution_count": 13,
"execution_count": 12,
"id": "9a22ee47",
"metadata": {},
"outputs": [],
@ -338,7 +353,7 @@
},
{
"cell_type": "code",
"execution_count": 14,
"execution_count": 13,
"id": "9de86267",
"metadata": {},
"outputs": [
@ -346,43 +361,24 @@
"name": "stdout",
"output_type": "stream",
"text": [
"CREATE TABLE [Album]\n",
"(\n",
" [AlbumId] INTEGER NOT NULL,\n",
" [Title] NVARCHAR(160) NOT NULL,\n",
" [ArtistId] INTEGER NOT NULL,\n",
" CONSTRAINT [PK_Album] PRIMARY KEY ([AlbumId]),\n",
" FOREIGN KEY ([ArtistId]) REFERENCES [Artist] ([ArtistId]) \n",
"\t\tON DELETE NO ACTION ON UPDATE NO ACTION\n",
"\n",
"CREATE TABLE \"Track\" (\n",
"\t\"TrackId\" INTEGER NOT NULL, \n",
"\t\"Name\" NVARCHAR(200) NOT NULL, \n",
"\t\"AlbumId\" INTEGER, \n",
"\t\"MediaTypeId\" INTEGER NOT NULL, \n",
"\t\"GenreId\" INTEGER, \n",
"\t\"Composer\" NVARCHAR(220), \n",
"\t\"Milliseconds\" INTEGER NOT NULL, \n",
"\t\"Bytes\" INTEGER, \n",
"\t\"UnitPrice\" NUMERIC(10, 2) NOT NULL, \n",
"\tPRIMARY KEY (\"TrackId\"), \n",
"\tFOREIGN KEY(\"MediaTypeId\") REFERENCES \"MediaType\" (\"MediaTypeId\"), \n",
"\tFOREIGN KEY(\"GenreId\") REFERENCES \"Genre\" (\"GenreId\"), \n",
"\tFOREIGN KEY(\"AlbumId\") REFERENCES \"Album\" (\"AlbumId\")\n",
")\n",
"\n",
"SELECT * FROM 'Album' LIMIT 2\n",
"AlbumId Title ArtistId\n",
"1 For Those About To Rock We Salute You 1\n",
"2 Balls to the Wall 2\n",
"\n",
"\n",
"CREATE TABLE [Track]\n",
"(\n",
" [TrackId] INTEGER NOT NULL,\n",
" [Name] NVARCHAR(200) NOT NULL,\n",
" [AlbumId] INTEGER,\n",
" [MediaTypeId] INTEGER NOT NULL,\n",
" [GenreId] INTEGER,\n",
" [Composer] NVARCHAR(220),\n",
" [Milliseconds] INTEGER NOT NULL,\n",
" [Bytes] INTEGER,\n",
" [UnitPrice] NUMERIC(10,2) NOT NULL,\n",
" CONSTRAINT [PK_Track] PRIMARY KEY ([TrackId]),\n",
" FOREIGN KEY ([AlbumId]) REFERENCES [Album] ([AlbumId]) \n",
"\t\tON DELETE NO ACTION ON UPDATE NO ACTION,\n",
" FOREIGN KEY ([GenreId]) REFERENCES [Genre] ([GenreId]) \n",
"\t\tON DELETE NO ACTION ON UPDATE NO ACTION,\n",
" FOREIGN KEY ([MediaTypeId]) REFERENCES [MediaType] ([MediaTypeId]) \n",
"\t\tON DELETE NO ACTION ON UPDATE NO ACTION\n",
")\n",
"\n",
"SELECT * FROM 'Track' LIMIT 2\n",
"SELECT * FROM 'Track' LIMIT 2;\n",
"TrackId Name AlbumId MediaTypeId GenreId Composer Milliseconds Bytes UnitPrice\n",
"1 For Those About To Rock (We Salute You) 1 1 1 Angus Young, Malcolm Young, Brian Johnson 343719 11170334 0.99\n",
"2 Balls to the Wall 2 2 1 None 342562 5510424 0.99\n"
@ -395,7 +391,7 @@
},
{
"cell_type": "code",
"execution_count": 15,
"execution_count": 14,
"id": "bcb7a489",
"metadata": {},
"outputs": [],
@ -405,7 +401,7 @@
},
{
"cell_type": "code",
"execution_count": 16,
"execution_count": 15,
"id": "81e05d82",
"metadata": {},
"outputs": [
@ -429,7 +425,7 @@
"' Some example tracks by Bach are \\'American Woman\\', \\'Concerto for 2 Violins in D Minor, BWV 1043: I. Vivace\\', \\'Aria Mit 30 Veränderungen, BWV 988 \"Goldberg Variations\": Aria\\', \\'Suite for Solo Cello No. 1 in G Major, BWV 1007: I. Prélude\\', and \\'Toccata and Fugue in D Minor, BWV 565: I. Toccata\\'.'"
]
},
"execution_count": 16,
"execution_count": 15,
"metadata": {},
"output_type": "execute_result"
}
@ -457,17 +453,18 @@
},
{
"cell_type": "code",
"execution_count": 3,
"execution_count": 20,
"id": "e59a4740",
"metadata": {},
"outputs": [],
"source": [
"from langchain.chains import SQLDatabaseSequentialChain"
"from langchain.chains import SQLDatabaseSequentialChain\n",
"db = SQLDatabase.from_uri(\"sqlite:///../../../../notebooks/Chinook.db\")"
]
},
{
"cell_type": "code",
"execution_count": 4,
"execution_count": 21,
"id": "58bb49b6",
"metadata": {},
"outputs": [],
@ -477,7 +474,7 @@
},
{
"cell_type": "code",
"execution_count": 5,
"execution_count": 22,
"id": "95017b1a",
"metadata": {},
"outputs": [
@ -493,9 +490,9 @@
"\n",
"\u001b[1m> Entering new SQLDatabaseChain chain...\u001b[0m\n",
"How many employees are also customers? \n",
"SQLQuery:\u001b[32;1m\u001b[1;3m SELECT COUNT(*) FROM Customer c INNER JOIN Employee e ON c.SupportRepId = e.EmployeeId;\u001b[0m\n",
"SQLQuery:\u001b[32;1m\u001b[1;3m SELECT COUNT(*) FROM Employee INNER JOIN Customer ON Employee.EmployeeId = Customer.SupportRepId;\u001b[0m\n",
"SQLResult: \u001b[33;1m\u001b[1;3m[(59,)]\u001b[0m\n",
"Answer:\u001b[32;1m\u001b[1;3m There are 59 employees who are also customers.\u001b[0m\n",
"Answer:\u001b[32;1m\u001b[1;3m 59 employees are also customers.\u001b[0m\n",
"\u001b[1m> Finished chain.\u001b[0m\n",
"\n",
"\u001b[1m> Finished chain.\u001b[0m\n"
@ -504,10 +501,10 @@
{
"data": {
"text/plain": [
"' There are 59 employees who are also customers.'"
"' 59 employees are also customers.'"
]
},
"execution_count": 5,
"execution_count": 22,
"metadata": {},
"output_type": "execute_result"
}
@ -515,6 +512,14 @@
"source": [
"chain.run(\"How many employees are also customers?\")"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "5eb39db6",
"metadata": {},
"outputs": [],
"source": []
}
],
"metadata": {
@ -523,9 +528,9 @@
"lastKernelId": null
},
"kernelspec": {
"display_name": "langchain",
"display_name": "Python 3 (ipykernel)",
"language": "python",
"name": "langchain"
"name": "python3"
},
"language_info": {
"codemirror_mode": {
@ -537,7 +542,7 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.8.16"
"version": "3.9.1"
}
},
"nbformat": 4,

5
langchain/sql_database.py
View File

@ -114,12 +114,11 @@ class SQLDatabase:
# save the columns in string format
columns_str = " ".join([col.name for col in table.columns])
try:
# get the sample rows
with self._engine.connect() as connection:
sample_rows = connection.execute(command)
try:
# shorten values in the smaple rows
# shorten values in the sample rows
sample_rows = list(
map(lambda ls: [str(i)[:100] for i in ls], sample_rows)
)