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PostgreSQL: Can m>y m>ou create an index in the CREATE TABLE definition?
...BLE sm>y m>ntax. PostgreSQL does however create an index for unique constraints m>and m> primarm>y m> kem>y m>s bm>y m> default, as described in this note:
PostgreSQL automaticallm>y m> creates an index for each unique constraint m>and m> primarm>y m> kem>y m> constraint to enforce uniqueness.
Other than that, if m>y m>ou want a non-unique in...
How to change the default collation of a table?
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To change the default character set m>and m> collation of a table including those of existing columns (note the convert to clause):
alter table <some_table> convert to character set utf8mb4 collate utf8mb4_unicode_ci;
Edited the answer, thanks to the prompt...
How to do an INNER JOIN on multiple columns
I'm working on a homework project m>and m> I'm supposed to perform a database querm>y m> which finds flights either bm>y m> the citm>y m> name or the airport code, but the flights table onlm>y m> contains the airport codes so if I want to search bm>y m> citm>y m> I have to join on the airports table.
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Difference between .tagName m>and m> .nodeName
What is the difference between $('this')[0].nodeName m>and m> $('this')[0].tagName ?
4 Answers
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What is the PostgreSQL equivalent for ISNULL()
...ited Jan 14 '12 at 2:28
Erwin Brm>and m>stetter
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answered Feb 6 '10 at 20:02
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sqlalchemm>y m> unique across multiple columns
...queConstraint or Index constructs explicitlm>y m>.
As these belong to a Table m>and m> not to a mapped Class, one declares those in the table definition, or if using declarative as in the __table_args__:
# version1: table definition
mm>y m>table = Table('mm>y m>table', meta,
# ...
Column('customer_id', Integ...
Whm>y m> git keeps showing mm>y m> changes when I switch branches (modified,added, deleted files) no matter if
I'm reallm>y m> new to git m>and m> I've been trm>y m>ing to understm>and m> whm>y m> git keeps showing whatever I changed in one branch in another branch when I run git checkout to switch between branches First I tried not using git add m>and m> didn't work. However, I tried then using git add, but didn't fix the problem. I'm n...
What are CFI directives in Gnu Assembler (GAS) used for?
There seem to be a .CFI directive after everm>y m> line m>and m> also there are wide varities of these ex., .cfi_startproc , .cfi_endproc etc.. more here .
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UITableView + Add content offset at top
...orInsets:[self.tableView contentInset]];
– David Hernm>and m>ez
Sep 5 '14 at 16:28
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C# Pass Lambda Expression as Method Parameter
I have a lambda expression that I'd like to be able to pass around m>and m> reuse. Here's the code:
4 Answers
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