Error While Executing Query Foreign Key Constraint Failed
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Foreign Key Constraint Failed (code 787)
Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation foreign key constraint failed (code 19) Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like sqlite foreign key example you, helping each other. Join them; it only takes a minute: Sign up SQLite Foreign Key Constraint Failed (code 787) up vote 1 down vote favorite 1 I ran into the Foreign Key Constraint Failed (code 787) error
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when I tried to upgrade my database. The only change I did was try to add a 4th entry to my InsertStatus. I looked around and I read that using ON DELETE CASCADE should solve my problem so I tried placing it at all my FK references and tried again but still the same problem. Logcat points to my onUpgrade and all the DROP TABLES in it ( i tried removing it one at a
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time to see which ones were bad and apparently all of them were ). Am I using ON DELETE CASCADE wrong? Or is it something else in my code? InsertStatus void InsertStatus(SQLiteDatabase db) { ContentValues cv = new ContentValues(); cv.put(colStatusID, 0); cv.put(colStatClass, "Active"); db.insert(statTable, colStatusID, cv); cv.put(colStatusID, 1); cv.put(colStatClass, "Settled"); db.insert(statTable, colStatusID, cv); cv.put(colStatusID, 2); cv.put(colStatClass, "Terminated"); db.insert(statTable, colStatusID, cv); cv.put(colStatusID, 3); cv.put(colStatClass, ""); db.insert(statTable, colStatusID, cv); } DatabaseHelper db.execSQL("CREATE TABLE " + termsTable + " (" + colTermsID + " INTEGER PRIMARY KEY , " + colTermsClass + " TEXT)"); db.execSQL("CREATE TABLE " + periodTable + " (" + colPeriodID + " INTEGER PRIMARY KEY , " + colPeriodClass + " TEXT)"); db.execSQL("CREATE TABLE " + statTable + " (" + colStatusID + " INTEGER PRIMARY KEY , " + colStatClass + " TEXT)"); db.execSQL("CREATE TABLE " + accountsTable + " (" + colID + " INTEGER PRIMARY KEY AUTOINCREMENT, " + colName + " TEXT, " + colAmount + " Integer, " + colPurpose + " TEXT, " + colTerms + " INTEGER NOT NULL, " + colPeriod +" INTEGER NOT NULL, " + colBalance +" INTEGER, "+ colStatus + " INTEGER DEFAULT '1'," + colDate + " TEXT, " + colEditDate + " TEXT, " + "FOREIGN KEY (" + colTerms + ") REFERENCES " + termsTable + " (" + colTe
to Foreign Key Constraints 2. Enabling Foreign Key Support 3. Required and Suggested Database Indexes 4. Advanced Foreign Key Constraint Features 4.1. Composite Foreign Key Constraints 4.2. Deferred Foreign Key Constraints 4.3. ON DELETE and ON UPDATE Actions 5. CREATE, ALTER and DROP sqlite foreign key constraint not enforced TABLE commands 6. Limits and Unsupported Features Overview This document describes the support for
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SQL foreign key constraints introduced in SQLite version 3.6.19 (2009-10-14). The first section introduces the concept of an SQL foreign key by example db browser for sqlite foreign key and defines the terminology used for the remainder of the document. Section 2 describes the steps an application must take in order to enable foreign key constraints in SQLite (it is disabled by default). The next http://stackoverflow.com/questions/29341380/sqlite-foreign-key-constraint-failed-code-787 section, section 3, describes the indexes that the user must create in order to use foreign key constraints, and those that should be created in order for foreign key constraints to function efficiently. Section 4 describes the advanced foreign key related features supported by SQLite and section 5 describes the way the ALTER and DROP TABLE commands are enhanced to support foreign key constraints. Finally, section 6 enumerates the missing features and limits of https://www.sqlite.org/foreignkeys.html the current implementation. This document does not contain a full description of the syntax used to create foreign key constraints in SQLite. This may be found as part of the documentation for the CREATE TABLE statement. 1. Introduction to Foreign Key Constraints SQL foreign key constraints are used to enforce "exists" relationships between tables. For example, consider a database schema created using the following SQL commands: CREATE TABLE artist( artistid INTEGER PRIMARY KEY, artistname TEXT ); CREATE TABLE track( trackid INTEGER, trackname TEXT, trackartist INTEGER -- Must map to an artist.artistid! ); The applications using this database are entitled to assume that for each row in the track table there exists a corresponding row in the artist table. After all, the comment in the declaration says so. Unfortunately, if a user edits the database using an external tool or if there is a bug in an application, rows might be inserted into the track table that do not correspond to any row in the artist table. Or rows might be deleted from the artist table, leaving orphaned rows in the track table that do not correspond to any of the remaining rows in artist. This might cause the application or applications to malfunction later on, or at least make coding the application more difficult. One solution is to add an
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