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How do I check if a column is empty or null in MySQL?
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mačekmaček
66.8k3232 gold badges157157 silver badges188188 bronze badges
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How to combine date from one field with time from another field - MS SQL Server
In an extract I am dealing with, I have 2 datetime columns. One column stores the dates and another the times as shown.
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Why covariance and contravariance do not support value type
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How is int not a subtype of object? Int32 inherits from System.ValueType, which inherits from System.Object.
– David Klempfner
Nov 6 '18 at 3:39
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How to get the parent dir location
...lways return the parent directory; twitter.com/#!/ActiveState/status/671049326788608
– Sridhar Ratnakumar
Nov 5 '10 at 22:12
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How to do an update + join in PostgreSQL?
Basically, I want to do this:
9 Answers
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Use of #pragma in C
...not. As per jalfs comments, data that is aligned on a 4 byte boundary for 32 bit processors or 8 byte boundary for 64 bit processors will typically be loaded and stored in a single operation. Data that is aligned on smaller boundaries will take multiple operations to load or store. This is slower...
What is the difference between an annotated and unannotated tag?
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Jaime Lomeli R.
322 bronze badges
answered Jul 16 '12 at 23:39
Todd A. JacobsTodd A. Jacobs
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How to open multiple pull requests on GitHub
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RikingRiking
2,0191717 silver badges3232 bronze badges
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Reading/parsing Excel (xls) files with Python
What is the best way to read Excel (XLS) files with Python (not CSV files).
12 Answers
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Bootstrap table without stripe / borders
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MaxMax
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