You have to create a new table with same structure + identity column. Insert the old data into...
You have to create a new table with same structure + identity column. Insert the old data into...
上网找 alter column identity 语句,将表中的一个字段调整成自动新增。发现没有。 跟踪了一下sql server 执行这一动作的语句,发现是新建了新表,将字段修改成自动新增,然后将资料insert过去,再删表,改名字。
--add identity column altertabletable1addcol3intidentity(1,1) GO --rename or remove old column execsp_rename'table1.col1','oldcol1','column' OR altertabletable1dropcolumncol1 --rename new column to old column name execsp_rename'table1.col3','col1','column' GO --add new test rec...
Serverless SQL pool in Azure Synapse Analytics supports only external and temporary tables. Syntax for Warehouse in Fabric syntaxsql Copy -- Syntax for Warehouse om Microsoft Fabric: ALTER TABLE { database_name.schema_name.table_name | schema_name.table_name | table_name } { ADD { column_...
However, if you add an identity column to a table that is not empty, the table space is placed in REORG-pending (REORP) status.The table must not be a history table or archive table.If the table is a system-period temporal table, the column is also added to the associated history ...
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However, if you add an identity column to a table that is not empty, the table space is placed in REORG-pending (REORP) status.The table must not be a history table or archive table.If the table is a system-period temporal table, the column is also added to the associated history ...
要确定当前配置,请调用$SYSTEM.SQL.CurrentSettings(),该函数显示当键存在时允许通过DDL创建主键设置。默认值为0(否),这是建议的配置设置。如果此选项设置为1(是),ALTER TABLE ADD PRIMARY KEY将导致 IRIS从类定义中删除主键索引,然后使用指定的主键字段重新创建此索引。
The options for alter column version of alter table statement. AddRowguidcol, DropRowguidcol can only happen if there is no DataType.C# Kopiuj public enum AlterTableAlterColumnOptionInheritance Enum AlterTableAlterColumnOption FieldsRozwiń tabelę NameValueDescription NoOptionDefined 0 No option ...