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How do you drop a default value or similar constraint in T-SQL?

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You can use this code to do it automatically: DECLARE @tableName VARCHAR(MAX) = ‘<MYTABLENAME>’ DECLARE @columnName VARCHAR(MAX) = ‘<MYCOLUMNAME>’ DECLARE @ConstraintName nvarchar(200) SELECT @ConstraintName = Name FROM SYS.DEFAULT_CONSTRAINTS WHERE PARENT_OBJECT_ID = OBJECT_ID(@tableName) AND PARENT_COLUMN_ID = ( SELECT column_id FROM sys.columns WHERE NAME = @columnName AND object_id = OBJECT_ID(@tableName)) IF @ConstraintName IS NOT NULL EXEC(‘ALTER TABLE … Read more

Setting default value for Foreign Key attribute in Django

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As already implied in @gareth’s answer, hard-coding a default id value might not always be the best idea: If the id value does not exist in the database, you’re in trouble. Even if that specific id value does exist, the corresponding object may change. In any case, when using a hard-coded id value, you’d have … Read more

how to get the default value of a type if the type is only known as System.Type? [duplicate]

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Since you really only have to worry about value types (reference types will just be null), you can use Activator.CreateInstance to call the default constructor on them. public static object GetDefaultValue(Type type) { return type.IsValueType ? Activator.CreateInstance(type) : null; } Edit: Jon is (of course) correct. IsClass isn’t exhaustive enough – it returns False if … Read more

WITH VALUES TSQL

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When you add a nullable column with a default constraint to a table, then all existing rows will get the new column with a NULL as its value. The defined default values will only be applied to new rows being inserted (if they don’t have a value for that column in their INSERT statement). When … Read more

Revert IntelliJ IDEA font to pre-2020.1 default font

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There is an official comment on the IntelliJ support site, stating the pre-2020.1 defaults per operating system are as follows: Mac OS: Menlo Linux: DejaVu Sans Mono Windows: Consolas Fallback: Monospaced I checked the default settings on IDEA version 2019.3 on OSX, and the default font is indeed Menlo, Size 12, Line spacing 1.2. You … Read more

PHP Default Function Parameter values, how to ‘pass default value’ for ‘not last’ parameters?

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PHP doesn’t support what you’re trying to do. The usual solution to this problem is to pass an array of arguments: function funcName($params = array()) { $defaults = array( // the defaults will be overidden if set in $params ‘value1’ => ‘1’, ‘value2’ => ‘2’, ); $params = array_merge($defaults, $params); echo $params[‘value1’] . ‘, ‘ … Read more

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)