bernsteinbear.com
this repo has no description
authored by
Max Bernstein
and committed by
GitHub
e65d8e7d
d26b3cef
+14
-17
+14
-17
db.py
+14
-17
db.py
···
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return Table(table.name, table.rows[offset:])
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def DISTINCT(self, table, columns):
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_distinct = {}
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for row in table.rows:
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key = US.join(str(row[col]) for col in columns)
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_distinct[key] = row
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_distinct = {US.join(str(row[col]) for col in columns): row for row in table.rows}
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newRows = []
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for key in _distinct:
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newRow = {}
···
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db.INSERT_INTO("Post", {"id": 1, "user_id": 0, "text": "Hello from Alice"})
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User = db.FROM("User")
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Post = db.FROM("Post")
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result = db.INNER_JOIN(User, Post, lambda row: row["User.id"] == row["Post.user_id"])
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result = db.SELECT(
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result,
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["User.age", "User.name", "Post.text"],
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{"User.name": "Author", "Post.text": "Message"},
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)
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result = db.ORDER_BY(result, lambda a, b: a["User.age"] - b["User.age"])
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print(result)
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# Post = db.FROM("Post")
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# result = db.INNER_JOIN(User, Post, lambda row: row["User.id"] == row["Post.user_id"])
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# result = db.SELECT(
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# result,
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# ["User.age", "User.name", "Post.text"],
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# {"User.name": "Author", "Post.text": "Message"},
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# )
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# result = db.ORDER_BY(result, lambda a, b: a["User.age"] - b["User.age"])
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# print(result)
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# result = User
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# result = db.UPDATE(User, {"name": "CHUCK"}, lambda row: row["id"] == 2)
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# result = db.DISTINCT(result, ["name"])
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# print(result)
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result = User
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result = db.UPDATE(User, {"name": "CHUCK"}, lambda row: row["id"] == 2)
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result = db.DISTINCT(result, ["name"])
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print(result)