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mongo group query how to keep fields
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This does not work, it groups by the other fields which is undesired.
– Jack Cole
Aug 2 '18 at 17:24
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How to use querySelectorAll only for elements that have a specific attribute set?
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@blackHawk The syntax uses CSS Selectors. As specified by MDN it "is a string containing one or more CSS selectors separated by commas". You can read about CSS Selectors here.
– martieva
Oct 21 '16 at 14:52
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How to check existence of user-define table type in SQL Server 2008?
...using type_id won't verify that the type is a table type--just that a type by that name exists. Otherwise gbn's query is probably better.
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SQL SELECT speed int vs varchar
...e space usage of different date types:
int fields occupy between 2 and 8 bytes, with 4 being usually more than enough ( -2147483648 to +2147483647 )
character types occupy 4 bytes plus the actual strings.
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WITH CHECK ADD CONSTRAINT followed by CHECK CONSTRAINT vs. ADD CONSTRAINT
...ITH CHECK is default for new constraints, and the constraint is turned on by default as well.
This syntax is generated by the SQL management studio when generating sql scripts -- I'm assuming it's some sort of extra redundancy, possibly to ensure the constraint is enabled even if the default constr...
How to store arrays in MySQL?
...o be stored in the third table? Can I just do a query to find the relation by just storing the primary keys from two tables?
– tonga
Jun 28 '13 at 19:20
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JavaScript - onClick to get the ID of the clicked button
...your html, like <button onClick="">
– Dave Jacoby
Jan 31 '19 at 17:24
if (this.id == "1") { ...
Why do I need to override the equals and hashCode methods in Java?
...l if their importantField is equal (with hashCode() and equals() generated by eclipse)
public class MyClass {
private final String importantField;
private final String anotherField;
public MyClass(final String equalField, final String anotherField) {
this.importantField = equal...
SQL server query to get the list of columns in a table along with Data types, NOT NULL, and PRIMARY
...Server 2005 and up.
In case you are using schemas, replace YourTableName by YourSchemaName.YourTableName where YourSchemaName is the actual schema name and YourTableName is the actual table name.
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How to handle many-to-many relationships in a RESTful API?
...you can return documents that describe the relationships between resources by encoding those relationships as links. Thus, a team can be said to have a document resource (/team/{id}/players) that is a list of links to players (/player/{id}) on the team, and a player can have a document resource (/pl...