Example:data = table([1;0],"VariableNames","NewName") Data Types:table Row filter condition, specified as amatlab.io.RowFilterobject or a cell array ofmatlab.io.RowFilterobjects. Filters determine which database rowssqlupdatemust update with which data. If multiple database rows match a filte...
SQLite CREATE TABLE 语句: CREATE TABLE table_name(column1 datatype,column2 datatype,column3 datatype,...columnN datatype,PRIMARY KEY(oneormore columns)); SQLite CREATE TRIGGER 语句: CREATE TRIGGER database_name.trigger_name BEFORE INSERT ON table_name FOR EACH ROWBEGINstmt1;stmt2;...END;...
typedef int (*sqlite3_callback)( void*, /* Data provided in the 4th argument of sqlite3_exec() */ int, /* The number of columns in row */ char**, /* An array of strings representing fields in the row */ char** /* An array of strings representing column names */ );如果上面...
(一般用来执行不用返回值的sql语句,如create table、update等) | 函数原型 int sqlite3_exec( sqlite3 *, /* An open database */ const char *sql, /* SQL to be evaluated */ int (*callback)(void*,int,char**,char**), /* Callback function */ void *, /* 1st argument to callback *...
删除表: drop table 表名; 插入数据: insert into 表名 values(, , ,) ; 创建索引: create [unique] index 索引名on 表名(col….); 删除索引: drop index 索引名(索引是不可更改的,想更改必须删除重新建) 删除数据: delete from 表名; 更新数据: update 表名 set 字段=’修改后的内容’ where 条件...
{ row[i] = reader[i].ToString(); } results.Add(row[0]); } return results; } public List<string[]> FindTableField(string table) { SQLiteCommand command = new SQLiteCommand("PRAGMA table_info(" + table + ")", connection); SQLiteDataReader reader = command.ExecuteReader(); List<...
slave_cursor.execute("SELECT * FROM my_table") rows = slave_cursor.fetchall() for row in rows: print(row) # 关闭数据库连接 master_conn.close() slave_conn.close() 注意:上述示例仅用于演示目的,并未包含实际的数据同步机制。在实际应用中,你需要根据具体需求实现数据同步机制,并确保数据的一致性和...
execDML(bufSQL); // Fetch table at once, and also show how to // use CppSQLiteTable::setRow() method // cout << endl << "getTable() test" << endl; CppSQLiteTable t = db.getTable("select * from emp order by 1;"); for (fld = 0; fld < t.numFields(); fld++) { cout...
importsqlite3# 连接到SQLite数据库conn = sqlite3.connect('example.db')# 设置Row工厂,以便查询结果返回字典conn.row_factory = sqlite3.Row cursor = conn.cursor()# 执行查询cursor.execute("SELECT * FROM users")# 获取查询结果,现在每一行都是一个字典rows = cursor.fetchall()forrowinrows:print(row...
Creating a table and inserting data awaitdb.exec('CREATE TABLE tbl (col TEXT)')awaitdb.exec('INSERT INTO tbl VALUES ("test")') Getting a single row constresult=awaitdb.get('SELECT col FROM tbl WHERE col = ?','test')// { col: 'test' } ...