大约有 40,000 项符合查询结果（耗时：0.0229秒） [XML]
ORDER BY the IN value list
...e fashion). And it's even simpler with modern Postgres (as demonstrated in newer answers). Also, this question seems to be about Postgres after all.
– Erwin Brandstetter
Mar 5 '16 at 0:29
...
Implementing Comments and Likes in database
...kes", tags and comments), and "inherit" all other tables from it. Adding a new kind of entity involves just adding a new "inherited" table - it then automatically plugs into the whole like/tag/comment machinery.
Entity-relationship term for this is "category" (see the ERwin Methods Guide, section:...
Table Naming Dilemma: Singular vs. Plural Names [closed]
...ural at all, but will always have a singular one (with few exceptions like News).
Customer
Order
User
Status
News
Reason 3. (Aesthetic and Order). Specially in master-detail scenarios, this reads better, aligns better by name, and have more logical order (Master first, Detail second):
1.Order
2.O...
What is a StoryBoard ID and how can i use this?
i'm new to IOS developing and recently started in Xcode 4.5. I saw for every viewController that i could set some identity variables including the storyboard ID. What is this and how can i use it?
...
When to use window.opener / window.parent / window.top
.../docs/Web/API/Window.opener
I've used window.opener mostly when opening a new window that acted as a dialog which required user input, and needed to pass information back to the main window. However this is restricted by origin policy, so you need to ensure both the content from the dialog and the...
How To Set Text In An EditText
...TextView.BufferType. For example:
EditText editText = (EditText)findViewById(R.id.edit_text);
editText.setText("Google is your friend.", TextView.BufferType.EDITABLE);
It also inherits TextView's setText(CharSequence) and setText(int) methods, so you can set it just like a regular TextView:
edit...
How to change the foreign key referential action? (behavior)
...
notice constraint is deleted, column is not deleted
Second step, ADD new CONSTRAINT:
ALTER TABLE `table1`
ADD CONSTRAINT `fk_name`
FOREIGN KEY (`fk_table2_id`) REFERENCES `table2` (`t2`) ON DELETE CASCADE;
adding constraint, column is already there
Example:
I have a User...
Merge two (or more) lists into one, in C# .NET
...you don't need this dynamic sizing... so you could use:
var allProducts = new List<Product>(productCollection1.Count +
productCollection2.Count +
productCollection3.Count);
allProducts.AddRange(productCollection1);
allPro...
Permission denied on accessing host directory in Docker
... -n "$opt_u" ]; then
OLD_UID=$(getent passwd "${opt_u}" | cut -f3 -d:)
NEW_UID=$(stat -c "%u" "$1")
if [ "$OLD_UID" != "$NEW_UID" ]; then
echo "Changing UID of $opt_u from $OLD_UID to $NEW_UID"
usermod -u "$NEW_UID" -o "$opt_u"
if [ -n "$opt_r" ]; then
find / -xdev -user "$OL...
angular ng-repeat in reverse
...e aware that items.reverse() modifies the array instead of just creating a new one and returning it.
– Anders Ekdahl
Mar 7 '13 at 14:05
12
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