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What is this date format? 2011-08-12T20:17:46.384Z
...er compliant with JDBC 4.2 or later. No need for strings, no need for java.sql.* classes. Hibernate 5 & JPA 2.2 support java.time.
Where to obtain the java.time classes?
Java SE 8, Java SE 9, Java SE 10, Java SE 11, and later - Part of the standard Java API with a bundled implementation.
Java...
What is the difference between join and merge in Pandas?
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To put it analogously to SQL "Pandas merge is to outer/inner join and Pandas join is to natural join". Hence when you use merge in pandas, you want to specify which kind of sqlish join you want to use whereas when you use pandas join, you really want...
What is the difference between integration testing and functional testing? [closed]
...est written against a single class, integration tests to be nunit tests or sql script tests that required more than class, or a database, or another system (usually requiring a full install) and functional tests are the test that QA runs or automated UI testing.
– aceinthehole
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Create a list from two object lists with linq
...dvantage is also that if you use Entity Framework, this can be done on the SQL side instead of the C# side.
– J4N
Aug 21 '13 at 7:52
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PowerShell and the -contains operator
...hers, and set automatic variables to use with captures.
-like, -ilike are SQL-like matchers.
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Nullable Foreign Key bad practice?
...ne, comparatively to other null phenomenons) is the fact that WHERE x=y in SQL actually means WHERE x is not null and y is not null and x=y, but that most programmers simply aren't aware of that fact and just read over it. Sometimes without any harm, other times not.
In fact, nullable columns viol...
How can I convert uppercase letters to lowercase in Notepad++
...rk for me (Notepad++ v6.2.3 on Windows 7). Only the Ctrl+Shift+U/Ctrl+U or SQL_Novice's answer work.
– CarLaTeX
Jan 4 '19 at 15:07
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Implementing Comments and Likes in database
...ve 2 stuff tables stuff1 and stuff2...I followed this diagram but there is sql error while using this...stuff1, stuff2 are two independent tables with their independent primary keys, and action table has a column id_stuff which is referencing to these two tabels stuff1, stuff2. Now for example stuff...
add column to mysql table if it does not exist
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Note that INFORMATION_SCHEMA isn't supported in MySQL prior to 5.0. Nor are stored procedures supported prior to 5.0, so if you need to support MySQL 4.1, this solution isn't good.
One solution used by frameworks that use database migrations is to record in your database a...
Copy values from one column to another in the same table
...e name and it's surrounded by grave accent (aka back-ticks `) as this is MySQL convention to escape keywords (and TABLE is a keyword in that case).
BEWARE, that this is pretty dangerous query which will wipe everything in column test in every row of your table replacing it by the number (regardless...