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Truncating all tables in a Postgres database

I regularly need to delete all the data from my PostgreSQL database before a rebuild. How would I do this directly in SQL? ...
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How can I determine installed SQL Server instances and their versions?

I'm trying to determine what instances of sql server/sql express I have installed (either manually or programmatically) but all of the examples are telling me to run a SQL query to determine this which assumes I'm already connected to a particular instance. ...
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How to keep keys/values in same order as declared?

I have a dictionary that I declared in a particular order and want to keep it in that order all the time. The keys/values can't really be kept in order based on their value, I just want it in the order that I declared it. ...
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How do you make a deep copy of an object?

It's a bit difficult to implement a deep object copy function. What steps you take to ensure the original object and the cloned one share no reference? ...
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How to split a string literal across multiple lines in C / Objective-C?

I have a pretty long sqlite query: 9 Answers 9 ...
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Switch statement for string matching in JavaScript

How do I write a swtich for the following conditional? 8 Answers 8 ...
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How to print register values in GDB?

How do I print the value of %eax and %ebp ? 6 Answers 6 ...
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How to use GROUP_CONCAT in a CONCAT in MySQL

If I have a table with the following data in MySQL: 7 Answers 7 ...
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Why is “import *” bad?

It is recommended to not to use import * in Python. 12 Answers 12 ...
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Purpose of Activator.CreateInstance with example?

Can someone explain Activator.CreateInstance() purpose in detail? 9 Answers 9 ...