sqlite

问题 I'm trying to get the extension-functions sqlite3 extension to load. The C file can be found here at the bottom. I'm running win10 and using VS2015. I have compiled (with no errors) both 32 and 64 bit versions to .dll and tried loading them using the sqlite3 shell with the same error. (Using both 32 and 64 bit versions of the sqlite3.dll file respectively). Below I'm trying to load the extension using 32bit sqlite. sqlite> select load_extension('C:\sqlite\ext32.dll'); Error: The specified

问题 I'm trying to include a SQLite file with the UWP application. SQLite file has a number of tables in it populated with data. The database (for now, at least) is read-only and I'm planning to use EF Core to access the data. So i have two questions: What is the correct way to bundle this file with the application. How do I compose the file path to access that file from UWP applciation? Setting .sqlite file's "Copy to output directory" setting to "Copy always" seems to copy the file to bin folder

问题 am trying to perform a case sensitive serach of all columns in a table, so i did somthing like this Select * From mytable Where col1 || '--' || col2 || '--' || etc like '%SomeValue%' but it alwas return the same result for both upper case and lower case. if i do this Select * From mytable Where col1 like '%SomeValue%' OR col1 like '%SomeValue%' etc i get the desired result. The problems here is that i cannot use this second query as i have about 36 columns to search, and writing col1 like '

问题 am trying to perform a case sensitive serach of all columns in a table, so i did somthing like this Select * From mytable Where col1 || '--' || col2 || '--' || etc like '%SomeValue%' but it alwas return the same result for both upper case and lower case. if i do this Select * From mytable Where col1 like '%SomeValue%' OR col1 like '%SomeValue%' etc i get the desired result. The problems here is that i cannot use this second query as i have about 36 columns to search, and writing col1 like '

问题 I have an insert statement for my sqlite table that contains apostrophes in the values. NSString *sqlInsert = [NSString stringWithFormat:@"insert into myTable (_id, name, area, title, description, url) VALUES (%i, '%@', '%@', '%@', '%@', '%@')", tempObject.ID, tempObject.name, tempObject.area, tempObject.title, tempObject.description, tempObject.url]; The results of that string is this insert into myTable (_id, name, area, title, description, url) VALUES (0, 'John Smith', 'USA', 'Programmer',

问题 I know that room is an abstraction layer over SQLite, I just want to know if I can use it for a different type of Database. I want to use Room to a special version of SQLite with geospatial support, is it possible? I really can't find an answer about this one. Android Spatialite Thanks in advance! 回答1: Yes, if you are willing to write the bridge code for it. One of the methods that you can call on a RoomDatabase.Builder is openHelperFactory(). This takes an instance of SupportSQLiteOpenHelper

问题 I know that room is an abstraction layer over SQLite, I just want to know if I can use it for a different type of Database. I want to use Room to a special version of SQLite with geospatial support, is it possible? I really can't find an answer about this one. Android Spatialite Thanks in advance! 回答1: Yes, if you are willing to write the bridge code for it. One of the methods that you can call on a RoomDatabase.Builder is openHelperFactory(). This takes an instance of SupportSQLiteOpenHelper

问题 Is there a way to read and write to sqlite3 from octave? I'm thinking something along the lines of RODBC in R or the sqlite3 package in python, but for octave. I looked on octave-forge http://octave.sourceforge.net/packages.php But could only find the 'database' package, which only supports postgresql. Details: OS: Ubuntu 12.04 Octave: 3.6.2 sqlite: 3.7.9 回答1: I realise this is an old question, but most answers here seem to miss the point, focusing on whether there exists a bespoke octave

问题 How can I delete multiple rows by a list of IDs in Android SQLite database? I have defined a general delete method in this manner: protected void deleteWhere(String whereClause, String[] whereArgs) { try { databaseHelper.getWritableDatabase().delete( getTableName(), whereClause, whereArgs); } finally { databaseHelper.close(); } } And now I'm trying to call it with a list of IDs: public void deleteAll(Iterable<T> entities) { Iterable<Long> ids = Iterables.transform(entities, getId); String

问题 this is somewhat related to my earlier query.. Reading A Big File With Python The problem was with runtime, so i was suggested to use sqlite3 database, and it reduced the time to millisecond, and I am very happy, now the only problem i have is, connecting to different database files in the same folder. All the database files have the same tables. The code I am using, reads only the first one, and doesnt seem to check the other databases. The output is when the teacher, enters students ID, it