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How do you find the row count for all your tables in Postgres
...looking for a way to find the row count for all my tables in Postgres. I know I can do this one table at a time with:
15 A...
CSS: bolding some text without changing its container's size
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Modern browsers now supports sub-pixel accuracy. So you can fine tune the spacing using 0.98px or smaller fractions.
– Reactgular
Aug 3 '16 at 23:10
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Foreign Key to non-primary key
... key, otherwise, data-garbage is the result sooner rather than later...
Now what you can do in this case (short of rewritting the entire application) is inserting a CHECK-constraint, with a scalar function checking the presence of the key:
IF EXISTS (SELECT * FROM sys.check_constraints WHERE ob...
Is there a way to instantiate objects from a string holding their class name?
... variant_type (*)()> map_type;
A boost::variant is like an union. It knows which type is stored in it by looking what object was used for initializing or assigning to it. Have a look at its documentation here. Finally, the use of a raw function pointer is also a bit oldish. Modern C++ code shou...
How to implement the activity stream in a social network
...vity is related to. So if the activity type means "added favorite" then I know that the source_id refers to the ID of a favorite record.
The parent_id/parent_type are useful for my app - they tell me what the activity is related to. If a book was favorited, then parent_id/parent_type would tell m...
Illegal mix of collations (utf8_unicode_ci,IMPLICIT) and (utf8_general_ci,IMPLICIT) for operation '=
..., and will speed sorts up slightly.
UPDATE: utf8mb4/utf8mb4_unicode_ci is now the preferred character set/collation method. utf8_general_ci is advised against, as the performance improvement is negligible. See https://stackoverflow.com/a/766996/1432614
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The new syntax “= default” in C++11
...};
In the above case, the copy constructor written with an empty body is now wrong. It's no longer actually copying anything. This is a very different set of semantics than the default copy constructor semantics. The desired behavior requires you to write some code:
struct S {
int a;
S()...
How to generate and validate a software license key?
...After you find some keys or patches floating in astalavista.box.sk you'll know that you succeeded in making something popular enough that somebody bothered to crack. Rejoice!
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How to return result of a SELECT inside a function in PostgreSQL?
I have this function in PostgreSQL, but I don't know how to return the result of the query:
2 Answers
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WCF Service , how to increase the timeout?
...ns to <system.serviceModel> in web.config, but its throwing an error now.... any additional steps I've missed out on...
– JL.
Oct 5 '09 at 14:23
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