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MySQL: @variable vs. variable. What's the difference?
...t work because my_var is not a system variable, whereas we can do set@@big_tables=1, set@@session.big_tables=1, and set session big_tables=1 because big_tables is a system variable.
– Pacerier
May 24 '15 at 23:10
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SQL keys, MUL vs PRI vs UNI
...hat the field is (part of) a non-unique index. You can issue
show create table <table>;
To see more information about the table structure.
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How to sum a variable by group
...he syntax behind each alternative. For instance, if I have a larger source table and want to subselect just two dimensions plus summed metrics, can I adapt any of these methods? Hard to tell.
– Dodecaphone
Oct 28 '18 at 10:42
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Postgres: SQL to list table foreign keys
Is there a way using SQL to list all foreign keys for a given table? I know the table name / schema and I can plug that in.
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CSS: how do I create a gap between rows in a table?
Meaning making the resultant table look less like this:
12 Answers
12
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Cannot use identity column key generation with ( TABLE_PER_CLASS )
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The problem here is that you mix "table-per-class" inheritance and GenerationType.Auto.
Consider an identity column in MsSQL. It is column based. In a "table-per-class" strategy you use one table per class and each one has an ID.
Try:
@GeneratedValue(strat...
How do I dump the data of some SQLite3 tables?
How do I dump the data, and only the data, not the schema, of some SQLite3 tables of a database (not all the tables)?
The dump should be in SQL format, as it should be easily re-entered into the database later and should be done from the command line. Something like
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Should you always favor xrange() over range()?
...rint " ".join(format(i*j,"3d") for j in xr) and voila! You have your times-tables up to ten. It works just the same as r = range(1,11) and for i in r: print " ".join(format(i*j,"3d") for j in r)... everything is an object in Python2. I think what you meant to say is that you can do index-based compr...
Check if table exists in SQL Server
I would like this to be the ultimate discussion on how to check if a table exists in SQL Server 2000/2005 using SQL Statements.
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Wrap text in tag
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To Wrap TD text
First set table style
table{
table-layout: fixed;
}
then set TD Style
td{
word-wrap:break-word
}
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