cus.execute("CREATE TABLE IF NOT EXISTS book(bookname, price)") #创建一个名为book的表,如果存在择忽略 cus.execute("INSERT INTO book VALUES('{}', {})".format('西游记', 36.0)) #插入一条数据,书名西游记,价格36.0 cus.execute("INSERT OR REPLACE INTO book VALUES('{}', {})".format('西...
1. ON CONFLICT REPLACE:如果存在冲突,将覆盖现有行的值。 ```sqlite INSERT OR REPLACE INTO table_name (column1, column2) VALUES (value1, value2); ``` 2. ON CONFLICT IGNORE:如果存在冲突,忽略该行而不执行任何操作。 ```sqlite INSERT OR IGNORE INTO table_name (column1, column2) VALUES (...
UNIQUE(gid, tagid)) 使用insert into插入重复数据时,数据库会报错,但是使用insert or ignore into数据库就不会报错了。 insert or replace into table_name( id,type) values (1,0); insert or ignore into table_name (id,type) values (2,0); IF NOT EXISTS(SELECT * FROM table_name WHERE ….) ...
当原始数据中存在主键重复(例如:id)的记录,我们又想将所有记录插入到数据库中,可以使用insert or replace语句。这样,id重复的记录只保留最后一项(即先插入的记录被后插入的记录替换),示例如下: msql ="insert or replace intomovieinfo(mid, mname, myear, mgenre, mruntime, rank, mrating, link) values(?
以上步骤将database2.db中的table1和table2表的数据合并到database1.db中的对应表中。如果表结构不完全相同,你可能需要调整SELECT语句来确保只选择兼容的列。此外,如果合并时遇到主键冲突等问题,你可能需要使用INSERT OR REPLACE INTO ...而不是INSERT INTO ...来替换已存在的行。
char * update = "insert or replace into FIELDS (id, name)" "values (?,?);"; sqlite3_stmt * stmt; if(sqlite3_prepare_v2(database, update, -1, &stmt, nil) == SQLITE_OK) { sqlite3_bind_int(stmt, 1, [self.idText.text intValue]); //1表示第一个问号 ...
sqlite3 $cur/my.db <<EOF insert or replace into Tbl (PID,Tag,Key,Value,Comment) VALUES(0,"OS", "LOGVIEW/MAXCOUNT","10",""); --update Tbl_Config set Value='0xff004f1f' where Tag='OS' and Key='LOG/LOGLEVEL' update Tbl_Config set Value='2/true/$TIP:8000/$CIP:6088' where...
http://www.chenxm.cc/article/1110.html.html 解决方案: Change INSERT to INSERT OR IGNORE 在使用sqlite, 使用语句insert or replace into 或者是 insert or ignore into sqlite3, IntegrityError: UNIQUE constraint failed when inserting a value
INSERT OR REPLACE INTO UserTable (username , password,email) VALUES (?,?,?); 3.更新一条数据 UPDATE UserTable set password = '123456' where username = 'wxhl'; 4.查询数据 SELECT username,password,email FROM UserTable where username = 'wxhl' ...
1.sql = "insert or replace into fpgaData(id, dev_num, state_flg, error_cd, present_p, power) values(?, ?, ?, ?, ?, ?)"; 2.if(sqlite3_prepare_v2(db, sql, -1, &stmt, NULL) == SQLITE_OK){ 3.//bind data for insert new line, total 1 line 4.sqlite3_bind_int(stmt,...