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August 29, 2015 14:18
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batch replace / escape SQL previewer
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| def sql_escape(v): | |
| return "'"+str(v).replace("'", "''")+"'" | |
| def fill_sql(sql, values): | |
| "Hacking around hard-to-reproduce pypyodbc bug. Also using tinyint for bools for easy counting." | |
| unique = "%PARAMETER%" | |
| sql = sql.replace("?", unique) | |
| for v in values: sql = sql.replace(unique, "null" if repr(v)=="None" else str(int(v)) if type(v) == bool else repr(v) if type(v) in (int, float) else sql_escape(v), 1) | |
| return sql | |
| sql = "update table set bla=?, bla2=?, bla3=? where id=?" | |
| vals = ["Bob", "Joe?", "It's hard", 5] | |
| print(fill_sql(sql, vals)) # update table set bla='Bob', bla2='Joe?', bla3='It''s hard' where id=5 |
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The bug i could not repro in a smaller program:
id = vals[0]
sql_preview = fill_sql(combined_sql, [id] + vals[1:]+[id] + vals)
return cur.execute(sql_preview).rowcount # works fine.
return cur.execute(combined_sql, [id] + vals[1:]+[id] + vals).rowcount # pypyodbc.DataError: ('22018', '[22018] [Microsoft][ODBC SQL Server Driver][SQL Server]Operand type clash: int is incompatible with datetimeoffset')