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JPA eager fetch does not join
...not necessarily dictate how the fetch statement is constructed, the actual sql implementation depends on the provider you are using toplink/hibernate etc.
If you set fetchType=EAGER This means that the annotated field is populated with its values at the same time as the other fields in the entity. ...
How do I check in SQLite whether a table exists?
How do I, reliably , check in SQLite, whether a particular user table exists?
22 Answers
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MySQL: ignore errors when importing?
I am importing a fairly large database. The .sql file has almost 1,000,000 lines in it. Problem is that I am getting a syntax error when trying to import the database. It says:
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SQLite with encryption/password protection
I'm just learning to use SQLite and I was curious if such is possible:
9 Answers
9
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Android SQLite: nullColumnHack parameter in insert/replace methods
The Android SDK has some convenience methods for manipulating data with SQLite. However both the insert and replace methods use some nullColumnHack parameter which usage I don't understand.
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Is HTML considered a programming language? [closed]
...
On some level Chris Pietschmann is correct. SQL isn't Turing complete (at least without stored procedures) yet people will list that as a language, TeX is Turing complete but most people regard it as a markup language.
Having said that: if you are just applying for jo...
What is the difference between JOIN and UNION?
...ubsets it -- completely different operations. Trivial example of UNION:
mysql> SELECT 23 AS bah
-> UNION
-> SELECT 45 AS bah;
+-----+
| bah |
+-----+
| 23 |
| 45 |
+-----+
2 rows in set (0.00 sec)
similary trivial example of JOIN:
mysql> SELECT * FROM
-> (SELECT 2...
How to do joins in LINQ on multiple fields in single join
...... } syntax. LinqPad is a great tool to see how expressions are behaving (SQL script if LINQ2SQL is used, expression trees etc.)
– Alexei
Sep 8 '16 at 14:57
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How do you debug MySQL stored procedures?
...iable at a given point in the script, but is there a better way to debug MySQL stored procedures?
16 Answers
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Foreign Key to non-primary key
... This solution is unreliable. See: dba.stackexchange.com/…/how-are-my-sql-server-constraints-being-bypassed
– stomy
Mar 6 at 17:01
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