We can also change the column's data type using theALTER TABLEcommand withMODIFYorALTER COLUMNclause. For example, SQL Server ALTERTABLECustomersALTERCOLUMNageVARCHAR(2); MySQL ALTERTABLECustomersMODIFYCOLUMNage
Usage: sqlcmd [flags] sqlcmd [command] Examples: # Install/Create, Query, Uninstall SQL Server sqlcmd create mssql --accept-eula --using https://aka.ms/AdventureWorksLT.bak sqlcmd open ads sqlcmd query "SELECT @@version" sqlcmd delete # View configuration information and connection strings...
ALTER [COLUMN] FieldName2 Specifies the name of an existing field to modify. Note that multiple ALTER COLUMN clauses are required to change more than one property of a field in a single ALTER TABLE command. See the ALTER TABLE examples to see how the ALTER COLUMN clauses are structured. ...
ALTERTABLEtable_name ADDcolumn_name datatype; The following SQL adds an "Email" column to the "Customers" table: ExampleGet your own SQL Server ALTERTABLECustomers ADDEmail varchar(255); ALTER TABLE - DROP COLUMN To delete a column in a table, use the following syntax (notice that some da...
ALTER INDEX index1 ON table1 REBUILD; ALTER INDEX ALL ON table1 REBUILD; ALTER INDEX ALL ON dbo.table1 REBUILD; Examples: Columnstore indexes These examples apply to columnstore indexes. A. REORGANIZE demo This example demonstrates how the ALTER INDEX REORGANIZE command works. It creates a tab...
ALTER DATABASE RECOVER STANDBY DATAFILE '/finance/stbs_21.f' UNTIL CONTROLFILE; Managed Standby Database Examples The following statement recovers the standby database in automated standby recovery mode: ALTER DATABASE RECOVER MANAGED STANDBY DATABASE; The following statement puts the database in...
ALTER INDEX index1 ON table1 REBUILD; ALTER INDEX ALL ON table1 REBUILD; ALTER INDEX ALL ON dbo.table1 REBUILD; Examples: Columnstore indexes These examples apply to columnstore indexes. A. REORGANIZE demo This example demonstrates how the ALTER INDEX REORGANIZE command works. It creates a tab...
To set ACCELERATED_DATABASE_RECOVERY ON or OFF, there must be no active connections to the database except for the connection running the ALTER DATABASE command. However, the database doesn't have to be in single-user mode. You can't change the state of this option unless the database ...
For more information, see ALTER DATABASE SET options.Scope: Global only. 1204 Returns the resources and types of locks participating in a deadlock and also the current command affected. For more information about deadlocks, see the Deadlocks guide.Note: Avoid using Trace Flag 1204 on workload-...
SET DDL [[ PRETTY | SQLTERMINATOR | CONSTRAINTS | REF_CONSTRAINTS | CONSTRAINTS_AS_ALTER|OID | SIZE_BYTE_KEYWORD | PARTITIONING | SEGMENT_ATTRIBUTES | STORAGE | TABLESPACE | SPECIFICATION | BODY | FORCE | INSERT | |INHERIT | RESET] {on|off} ] | OFF ] ...