What is the version of SQLite used in Android? Reason: I’m wondering how to handle schema migrations. The newer SQLite versions support an “ALTER TABLE” SQL command which would save me having to copy data, drop the table, recreate table and re-insert data. 5 Answers 5
As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for … Read more
This question already has answers here: Is there an SQLite equivalent to MySQL’s DESCRIBE [table]? (7 answers) Closed 6 years ago. How can I see the structure of table in SQLite as desc was in Oracle? 8 Answers 8
I want to delete or add column in sqlite database I am using following query to delete column. ALTER TABLE TABLENAME DROP COLUMN COLUMNNAME But it gives error System.Data.SQLite.SQLiteException: SQLite error near “DROP”: syntax error 22 Answers 22
sqlite> DELETE FROM mails WHERE (`id` = 71); SQL error: database is locked How do I unlock the database so this will work? 38 Answers 38 In windows you can try this program http://www.nirsoft.net/utils/opened_files_view.html to find out the process is handling db file. Try closed that program for unlock database In Linux and macOS you … Read more
As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for … Read more
I have created my tables in my SQLiteOpenHelper onCreate() but receive SQLiteException: no such table or SQLiteException: no such column errors. Why? NOTE: (This is the amalgamated summary of tens of similar questions every week. Attempting to provide a “canonical” community wiki question/answer here so that all those questions can be directed to a good … Read more
I want to create a table in a SQLite database only if doesn’t exist already. Is there any way to do this? I don’t want to drop the table if it exists, only create it if it doesn’t. 2 Answers 2
I would need to rename a few columns in some tables in a SQLite database. I know that a similar question has been asked on stackoverflow previously, but it was for SQL in general, and the case of SQLite was not mentioned. From the SQLite documentation for ALTER TABLE, I gather that it’s not possible … Read more
I’ve found a few “would be” solutions for the classic “How do I insert a new record or update one if it already exists” but I cannot get any of them to work in SQLite. I have a table defined as follows: CREATE TABLE Book ID INTEGER PRIMARY KEY AUTOINCREMENT, Name VARCHAR(60) UNIQUE, TypeID INTEGER, … Read more
