to get definition of sql object of type: Table, Sequence, Queue, Default constraints, Check constraints, Primary key, unique key, Index. Khushboo55 , surely you can query all object defenitions, but because all objets are different in structure you have to ...
A Unique index will be created automatically when you define a PRIMARY KEY or UNIQUE KEY constraints on the specified columns. In all cases, creating a Unique index on the unique data, instead of creating a non-unique index on the same data, is highly recommended, as it will help the SQ...
SQL Server Unique constraint for values in different columnI agree 100% with the above comments ...
ALTER TABLE command in standard query language (SQL) is used to add, delete, or modify columns by renaming them or changing their data types in an existing data table. It is also used to add or remove constraints such as UNIQUE, NOT NULL, PRIMARY KEY, CHECK, etc., on the existing col...
Note also: Some of the queries below may not be legal in all situations, such as in views or sub-queries. StandardThe SQL standard provides three ways of performing a 'simple limit': UsingFETCH FIRST:(since SQL:2008) Non-core feature IDs F856, F857, F858, and F859 describe using ...
comparison against the same value, SWITCH just takes that one input and will SWITCH the output. If you type =SWITCH( into a cell then excel can show you the parameters but basically the value in question then pairs of condition, output so if the value meets a condition it wi...
This article explores various ways to search for database objects in SQL database such as tables, stored procedures, functions, and views. Introduction SQL Server has many database objects such as table, view, stored procedure, function, constraints, rule, Synonym, triggers. You being a devel...
Lack of Flexibility:Modifying the schema might be challenging and impact already-running applications. Joins and Performance:Performance constraints might be caused by excessive join usage. 2. NoSQL Database Management System A database management system known as NoSQL (Not Only SQL) databases offers...
Check constraints or partition function of source table ALTER TABLE with variable TableName ALTER vs UPDATE when creating a new column with default value. Alternate queries for MERGE Alternative for OR in WHERE clause Alternative for PIVOT Alternative of CURSOR in SQL to improve performance ?
The following procedures show how to create a read replica from a source MariaDB, Microsoft SQL Server, MySQL, Oracle, or PostgreSQL DB instance in a different AWS Region. You can create a read replica across AWS Regions using the AWS Management Console. To create a read replica across AWS...