处理CHECK约束条件失败的异常 当遇到android.database.sqlite.SQLiteConstraintException: CHECK constraint failed异常时,我们可以通过以下几种方式来处理: 1.检查数据是否符合CHECK约束条件 首先,我们应该检查要插入或修改的数据是否满足CHECK约束条件。如果不满足条件,我们需要修正数据或者
Class,Age,Grade)values('ZHANG SAN','9','16',10);//successINSERTINTOStudent(Name,Class,Age,Grade)values('ZHANG SAN','10','16',10);//successINSERTINTOStudent(Name,Class,Age,Grade)values('ZHANG SAN','10','16',10);//Error:UNIQUEconstraintfailed: Student.Name, Student.Class...
Age integerCHECK(Age>22));sqlite>.tablesTeacherssqlite>INSERT INTO Teachers(Age) VALUES(45);sqlite>INSERT INTO Teachers(Age) VALUES(33);sqlite>INSERT INTO Teachers(Age) VALUES(23);sqlite>INSERT INTO Teachers(Age) VALUES(21);Error: constraint failedsqlite>...
Age integer CHECK(Age>22));sqlite>.tablesTeacherssqlite>INSERT INTO Teachers(Age) VALUES(45);sqlite>INSERT INTO Teachers(Age) VALUES(33);sqlite>INSERT INTO Teachers(Age) VALUES(23);sqlite>INSERT INTO Teachers(Age) VALUES(21);Error: constraint failedsqlite>...
Error: CHECK constraint failed: item sqlite> INSERT INTO item VALUES("ITM3","Crack-Munch",110); Error: CHECK constraint failed: item Here in the first insertion in item table on problem arise but in the second and the third insertion error been occur, because in the second insertion, the...
print(f"CHECK constraint failed: {e}") The CHECK constraint enforces that price must be greater than 0. The second insert attempts to set a negative price, which violates this rule. CHECK constraints are powerful for enforcing business rules at the database level, ensuring invalid data can'...
Error: UNIQUE constraint failed: ntbl.addr 查看对 score 的约束: sqlitea insert into ntbl(score) values (-20); Error:CHECK constraint failed:ntbl 假如addr、score 都不对: sqlite> insert into ntbl(addr , score) values( "bj",-20); ...
sqlite>DELETEFROMAuthorsWHEREAuthorId=1;Error:foreignkeyconstraintfailed SQL Copy 尝试删除仍在Books表中有书的作者会导致错误。 作者未被删除。 sqlite>DELETEFROMBooksWHEREAuthorId=1;sqlite>DELETEFROMAuthorsWHEREAuthorId=1;sqlite>SELECT*FROMAuthors;AuthorIdName---2LeoTolstoy3JosephHeller4CharlesDickens SQL ...
sqlite3.IntegrityError: UNIQUE constraint failed: cameras.camera_id 错误表明在尝试向 cameras 表中插入数据时,违反了 camera_id 字段的唯一性约束。这通常意味着你试图插入一个已经存在于该字段中的值。 2. 检查数据库中是否已存在具有相同 camera_id 的记录 要检查数据库中是否已存在具有相同 camera_id 的记录...
We look at the definition of the Orders table. We see a CHECK constraint imposed on the OrderPrice column. Naturally, the price of an order must be a positive value. sqlite> INSERT INTO Orders(OrderPrice, Customer) VALUES(-10, 'Johnson'); Error: constraint failed If we try to insert ...