);-- create unique indexCREATEUNIQUEINDEXcollege_indexONColleges(college_code); Here, the SQL command creates a unique index namedcollege_indexon theCollegestable using thecollege_codecolumn. Note:Although the index is created for only unique values, the original data in the table remains unaltered...
recursive SQL and, 14-7 stored procedures and, 14-18 D dangling REFs, 11-9 data access to, 1-49 control of, 25-2 message queues, 16-5 security domains, 25-2 concurrent access to, 23-2 consistency of defined, 1-52 examples of lock behavior, 23-30 locks, 23-3 ...
Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW) SQL database in Microsoft Fabric Modifies an existing table or view index (rowstore, columnstore, or XML) by disabling, rebuilding, or reorganizing the index; or by ...
Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW) SQL database in Microsoft Fabric Modifies an existing table or view index (rowstore, columnstore, or XML) by disabling, rebuilding, or reorganizing the index; or by ...
Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW) SQL database in Microsoft Fabric Modifies an existing table or view index (rowstore, columnstore, or XML) by disabling, rebuilding, or reorganizing the index; or by ...
SQL PATINDEX Examples The following example shows a simple use of the PATINDEX function. The above query returns the starting index of the pattern Index in the input string. The following queries use the AdevnetureWorks2019 database.
Sort order can be specified only for the key columns in index. The sys.index_columns catalog view and the INDEXKEY_PROPERTY function report whether an index column is stored in ascending or descending order.If you're following along with the code examples in the AdventureWorks sample database,...
Examples 1. Basic Index Creation CREATEINDEXidx_customer_idONorders(customer_id); In this example, an index `idx_customer_id` is created on the `customer_id` column of the `orders` table to speed up `JOIN` operations involving this column. ...
Examples of Function-Based Indexes Example: Function-Based Index for Case-Insensitive Searches The following command allows faster case-insensitive searches in tableEMP_TAB. CREATE INDEX Idx ON Emp_tab (UPPER(Ename)); TheSELECTcommand uses the function-based index onUPPER(e_name) to return all of...