SQL CREATE DATABASE 实例 下面的 SQL 语句创建一个名为 "my_db" 的数据库: CREATE DATABASE my_db; 数据库表可以通过 CREATE TABLE 语句来添加。
create_table_sql = f'''CREATE TABLE IF NOT EXISTS {"我的测试"} ( id INTEGER PRIMARY KEY, mytxt TEXT NOT NULL, date_time DATETIME, int_value INT(4), float_value REAL )''' db.open() query = QSqlQuery() print(query.exec(create_table_sql)) 1. 2. 3. 4. 5. 6. 7. 8. 9. ...
Query query = session.createSQLQuery("select id,name from Tree t where pid in (select id from Tree) ").setResultTransformer(Transformers.ALIAS_TO_ENTITY_MAP); //返回一个map,KEY:为DB中名称一致(大小写一致)遍历list时就可以 Map map = (Map)list.get[i]; map.get("id");map.get("name")...
Azure SQL Shared SQL DB & SQL MI docs Azure SQL Database (SQL DB) Documentation Overview Quickstarts Quickstarts Create database Azure portal, PowerShell, Az CLI Hyperscale Bicep ARM template Terraform With ledger and digest storage With user-assigned managed identity Configure Connect and query ...
Query query = session.createSQLQuery("select sum(id) SUMID from Tree t where pid in (select id from Tree) .addScalar("SUMID",Hibernate.INTEGER) //转换类型,按DB中的type转 .setResultTransformer(Transformers.ALIAS_TO_ENTITY_MAP); //返回一个map,KEY:为DB中名称一致(大小写一致) ...
Query query = session.createSQLQuery("select sum(id) SUMID from Tree t where pid in (select id from Tree) .addScalar("SUMID",Hibernate.INTEGER) //转换类型,按DB中的type转 .setResultTransformer(Transformers.ALIAS_TO_ENTITY_MAP); //返回一个map,KEY:为DB中名称一致(大小写一致) ...
SQL Copy -- Create a db master key if one does not already exist, using your own password. CREATE MASTER KEY ENCRYPTION BY PASSWORD='<EnterStrongPasswordHere>'; -- Create a database scoped credential. CREATE DATABASE SCOPED CREDENTIAL AppCred WITH IDENTITY = 'Mary5', SECRET = '<Enter...
适用于:SQL Server 2014 (12.x) 及更高版本和 Azure SQL 数据库。SQL Server 事务提交可以是完全持久、默认或延迟的持久。有关详细信息,请参阅控制事务持续性。简单示例为帮助快速入门,这里提供以下两个简单示例:SELECT DB_NAME() AS ThisDB; 返回当前数据库的名称。可将该语句包装在存储过程中,例如:...
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SQL CREATETRIGGERreminder2ONSales.CustomerAFTERINSERT,UPDATE,DELETEASEXEC msdb.dbo.sp_send_dbmail @profile_name ='AdventureWorks2022 Administrator', @recipients ='danw@Adventure-Works.com', @body='Don''t forget to print a report for the sales force.', @subject ='Reminder'; GO ...