tb.Create(); //Add another column. Column col5; col5 = new Column(tb, "ExpiryDate", DataType.DateTime); col5.Nullable = false; tb.Columns.Add(col5); //Run the Alter method to make the change on the instance of SQL Server. tb.Alter(); //Remove the table ...
5.0 Sybase SQL Server >= 10 7.0 Microsoft SQL Server 7.0 7.1 Microsoft SQL Server 2000 7.2 Microsoft SQL Server 2005 7.3A,7.3B Microsoft SQL Server 2008 TDS消息类型 分为客户端消息和服务端消息 客户端消息: 预登陆请求(Pre-login):与服务器协商包括使用版本、加密与否等环境设置。 登录(Login):发送...
AlterServerRoleStatement AlterServiceMasterKeyOption AlterServiceMasterKeyStatement AlterServiceStatement AlterSymmetricKeyStatement AlterTableAddTableElementStatement AlterTableAlterColumnOption AlterTableAlterColumnStatement AlterTableAlterIndexStatement AlterTableAlterPartitionStatement AlterTableChangeTrackingModificationStatem...
When the addition of a column requires physical changes to the data rows of a table, such as adding DEFAULT values to each row, locks are held on the table while ALTER TABLE runs. This affects the ability to change the content of the table while the lock is in place. In contrast, add...
notice：提示 SQL 审核结果，用户可选择继续执行 warning：提示 SQL 审核结果，用户可选择继续执行，执行...
AlterServerRoleStatement AlterServiceMasterKeyOption AlterServiceMasterKeyStatement AlterServiceStatement AlterSymmetricKeyStatement AlterTableAddTableElementStatement AlterTableAlterColumnOption AlterTableAlterColumnStatement AlterTableAlterIndexStatement AlterTableAlterPartitionStatement AlterTableChangeTrackingModificationSta...
The option on the column. The DataType has to be null for this to be AddRowguidcol or DropRowguidcol. (?)PERSISTED used only in 2005"
alwaysmysql:image:mysql:5.7environment:MYSQL_ROOT_PASSWORD:ukC2ZkcG_ZTebMYSQL_DATABASE:yearningMYSQL_USER:yearningMYSQL_PASSWORD:ukC2ZkcG_ZTebcommand:- --character-set-server=utf8mb4- --collation-server=utf8mb4_general_civolumes:-./data/mysql:/var/lib/mysql# 默认账号:admin,默认密码:Yearning...
The SQL Server Database Engine uses the following procedure to accomplish this change: Adds a new column to the table in the new storage size and format. For each row in the table, updates and copies the value stored in the old column to the new column. Removes the old column from the...
A nullable rowversion column is semantically equivalent to a varbinary(8) column. You can use the rowversion column of a row to easily determine whether an update statement has been run against the row since the last time it was read. If an update statement is run against the row, the ...