and collation is “utf8_general_ci”. And that’s the answer. If you’re using utf8_general_ci (actually it applies to all utf_…_[ci|cs]) collation then diacritics are bypassed in comarison, thus: SELECT “e” = “é” AND “O” = “Ó” AND “ä” = “a” Results in 1. Indexes also use collation. If you want to distinguish between ą and a then … Read more
This layout works in my app. The trick is to set these two attributes in ScrollView: android:layout_height=”0dp” app:layout_constraintBottom_toBottomOf=”parent” The simplified layout from my app: <?xml version=”1.0″ encoding=”utf-8″?> <android.support.constraint.ConstraintLayout xmlns:android=”http://schemas.android.com/apk/res/android” xmlns:app=”http://schemas.android.com/apk/res-auto” xmlns:tools=”http://schemas.android.com/tools” android:layout_width=”match_parent” android:layout_height=”match_parent” android:theme=”@style/ThemeOverlay.AppCompat.Light”> <RelativeLayout android:id=”@+id/linear” android:layout_width=”0dp” android:layout_height=”56dp” android:background=”@color/title” app:layout_constraintLeft_toLeftOf=”parent” app:layout_constraintRight_toRightOf=”parent” app:layout_constraintTop_toTopOf=”parent” /> <ScrollView android:layout_width=”0dp” android:layout_height=”0dp” app:layout_constraintBottom_toBottomOf=”parent” app:layout_constraintLeft_toLeftOf=”parent” app:layout_constraintRight_toRightOf=”parent” app:layout_constraintTop_toBottomOf=”@id/linear”> <android.support.constraint.ConstraintLayout android:layout_width=”match_parent” android:layout_height=”wrap_content”> <TextView android:id=”@+id/titleView” … Read more
SQL Server syntax for the check constraint: create table numbers ( number int not null check(number >= 1234 and number <= 4523), … ) create table numbers ( number int not null, check(number >= 1234 and number <= 4523), … ) create table numbers ( number int not null, constraint number_range_check check(number >= 1234 and … Read more
Per previous comments, it should be a problem. That said, there is a command that may be what you’re looking to – it’ll set the constraints to deferred so they’re checked on COMMIT, not on every delete. If you’re doing just one big DELETE of all the rows, it won’t make a difference, but if … Read more
Mysql has a special syntax for dropping foreign key constraints: ALTER TABLE tbl_magazine_issue DROP FOREIGN KEY FK_tbl_magazine_issue_mst_users
Kirk Woll’s quote from me of course is all the justification that is required; we are not required to provide a justification for features not existing. Features have enormous costs. However, in this specific case I can certainly give you some reasons why I would push back on the feature if it came up in … Read more
To disable foreign key constraints: DECLARE @sql nvarchar(max) = N”; ;WITH x AS ( SELECT DISTINCT obj = QUOTENAME(OBJECT_SCHEMA_NAME(parent_object_id)) + ‘.’ + QUOTENAME(OBJECT_NAME(parent_object_id)) FROM sys.foreign_keys ) SELECT @sql += N’ALTER TABLE ‘ + obj + N’ NOCHECK CONSTRAINT ALL; ‘ FROM x; EXEC sys.sp_executesql @sql; To re-enable: DECLARE @sql nvarchar(max) = N”; ;WITH x AS … Read more
The line: FOREIGN KEY (pk_studentID ) REFERENCES student(pk_studentID ), is wrong. You can’t use pk_studentID like that, this is just the name of the PK constraint in the parent table. To use a compound Primary Key as Foreign Key, you’ll have to add the same number of columns (that compose the PK) with same datatypes … Read more
You need to first change the constraint and then animate the update. This should be in the superview. self.nameInputConstraint.constant = 8 Swift 2 UIView.animateWithDuration(0.5) { self.view.layoutIfNeeded() } Swift 3, 4, 5 UIView.animate(withDuration: 0.5) { self.view.layoutIfNeeded() }
You need to query the data dictionary, specifically the USER_CONS_COLUMNS view to see the table columns and corresponding constraints: SELECT * FROM user_cons_columns WHERE table_name=”<your table name>”; FYI, unless you specifically created your table with a lower case name (using double quotes) then the table name will be defaulted to upper case so ensure it … Read more