FILENAME=‘c:\Program Files\Microsoft SQL Server\MSSQL.1\mssql\data\AccountingLog.ldf’, SIZE=5MB, MAXSIZE=25MB, FILEGROWTH=5MB) GO 查看数据库的信息,使用以下语句执行: exec sp_helpdb ‘Accounting’ 2.创建表 创建表,其命令语法格式如下:
Exercise 1 Use ALTER TABLE to ADD and Modify Columns 练习一:使用ALTER TABLE来添加和修改列 Examine the following CREATE TABLE statement, from the TSQL2012.sql script, that is used to create the Production.Categories table. 从TSQL2012.sql脚本开始,测试下面的CREATE TABLE语句,它是用来创建一个Produc...
TSQL–标示列、GUID 、序列 –1. IDENTIY 列不能为空,不能设默认值,创建后不能使用ALTER TABLE TableName ALTER COLUMN修改,每张表只能有一个自增列 –2. 查看当前值:SELECT IDENT_CURRENT(‘TableName’), — 查看增量值:SELECT IDENT_INCR(‘TableName’) — 查看原始种子值:SELECT IDENT_SEED(‘TableNa...
SqlServer.TransactSql.ScriptDom AbortAfterWaitType AcceleratedDatabaseRecoveryDatabaseOption AddAlterFullTextIndexAction AddFileSpec AddMemberAlterRoleAction AddSearchPropertyListAction AddSensitivityClassificationStatement AddSignatureStatement AdHocDataSource AdHocTableReference AffinityKind AlgorithmK...
二、CREATE TABLE 创建表的具体语法: CREATETABLECustomers 详细语法: CREATETABLE[database_name.[owner].]table_name (<columnname><data type>[[DEFAULT <constant expression>] | [IDENTITY [(seed,increment) [NOT FOR REPLICATION]]] [ROWGUIDCOL] [...
SqlServer.TransactSql.ScriptDom Microsoft.SqlServer.TransactSql.ScriptDom AbortAfterWaitType AcceleratedDatabaseRecoveryDatabaseOption AddAlterFullTextIndexAction AddFileSpec AddMemberAlterRoleAction AddSearchPropertyListAction AddSensitivityClassificationStatement AddSignatureStatement AdHocDataSource AdHocTableRefere...
組件:Microsoft.Data.Schema.ScriptDom.Sql (在 Microsoft.Data.Schema.ScriptDom.Sql.dll 中) 語法 VB複製 '宣告PublicOverridableSubVisit ( _ nodeAsAlterTableAlterColumnStatement _ ) 參數 node 型別:Microsoft.Data.Schema.ScriptDom.Sql.AlterTableAlterColumnStatement ...
[42000][1064] You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'CURRENT_TIMESTAMP' at line 1. 解决方案: ALTER TABLE t_user MODIFY COLUMN create_date TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP; ...
syntaxsql 複製 FROM { <table_source> [ , ...n ] } <table_source> ::= { [ database_name . [ schema_name ] . | schema_name . ] table_or_view_name [ AS ] table_or_view_alias | derived_table [ AS ] table_alias [ ( column_alias [ , ...n ] ) ] | <joined_table> ...
syntaxsql复制 FROM{<table_source>[ , ...n ] }<table_source>::={ [database_name. [schema_name] . |schema_name. ]table_or_view_name[AS]table_or_view_alias|derived_table[AS]table_alias[ (column_alias[ , ...n ] ) ] |<joined_table>}<joined_table>::={<table_source><join_typ...