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@@ -44,6 +44,14 @@ class SQLRW :
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# We need to load the drivers here to see what we are dealing with ...
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_handler = SQLWriter.DRIVERS[_args['provider']]
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self.conn = _handler.connect(**_info)
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+
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+ def isready(self):
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+ _sql = "SELECT * FROM :table LIMIT 1".replace(":table",self.table)
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+ try:
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+ return pd.read_sql(_sql,self.conn).columns.tolist()
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+ except Exception as e:
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+ pass
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+ return False
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def apply(self,_sql):
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"""
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This function applies a command and/or a query against the current relational data-store
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@@ -138,8 +146,8 @@ class SQLWriter(SQLRW,Writer):
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finally:
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pass
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-_args = {"db":"sample","table":"foo","provider":"postgresql"}
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-# # w = SQLWriter(**_args)
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-# # w.write({"name":"kalara.io","email":"ceo@kalara.io","age":10})
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-r = SQLReader(**_args)
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-print (r.read(filter='age > 0',limit = 20))
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+# _args = {"db":"sample","table":"foo","provider":"postgresql"}
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+# # # w = SQLWriter(**_args)
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+# # # w.write({"name":"kalara.io","email":"ceo@kalara.io","age":10})
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+# r = SQLReader(**_args)
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+# print (r.read(filter='age > 0',limit = 20))
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