’9.6’)”) #使sql语句生效 db.commit() #关闭mysql链接 db.close() ...
/// public void EnableWriteAheadLogging() { ExecuteScalar<string>("PRAGMA journal_mode=WAL"); } /// /// Convert an input string to a quoted SQL string that can be safely used in queries. /// /// <returns>The quoted string.</returns> /// The unsafe string to quote. private ...
CBlob which represents a blob in SQLite or in other words a sqlite3_blob* pointer. CPtr which encapsulates something which needs to be freed using sqlite3_free as well as printf style formatting of SQL Strings using sqlite3_vmprintf. CRowset provides an STL compliant encapsulation of a row...
import{field,FieldOpts,fk,id,index,table,TableOpts}from'sqlite3orm';@table({name:'USERS'})classUser{@id({name:'user_id',dbtype:'INTEGER NOT NULL'})userId!:number;@field({name:'user_loginname',dbtype:'TEXT NOT NULL'})userLoginName!:string;@field({name:'user_json',dbtype:'TEXT'...
[CdString3] [ntext] NOT NULL, PRIMARY KEY (CdType,CdCode) ) ; 3)创建索引 CREATE INDEX [IX_Account] ON [Account]([IsCheck], [UserName]); 还可以视图等等。 4.还有很有用的SQL Select * from Sqlite_master Select datetime('now') ...
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and the offset exceeds 256, then ** the higher order bits are truncated.) The offset is chosen to minimize ** the number of characters inthe string that need to be escaped. For ** example, in the case above where the string was composedof 100 0x27 ** characters, the offset might...
///This class provides the foundation for simplified access to a database. It contains a number ///of helper methods that make working with the database easier. /// publicclassSQLiteDatabase : IDisposable { privatestringconnectionString; privateSQLite...
The single mostimportant feature of Oracle is one that first appeared in version 6: the changevector, a mechanism for describing changes to data blocks, the heart of redoand undo. --对于Oracle来说,最具有革命性的新特性莫过于Oracle 6时出现的改变向量(changevector);改变向量:即描述数据块更改的信...