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Tag: sqlite

SQL query, where = value of another table

I want to make a query that simply makes this, this may sound really dumb but i made a lot of research and couldn’t understand nothing. Imagine that i have two tables (table1 and table2) and two columns (table1.column1 and table2.column2). What i want to make is basically this: I don’t know if this is possible. Thanks in advance, Answer

Combine two statements with LIMITS using UNION

Is there a way to combine these two statements into one without having duplicate entries? My first, obvious attempt is not supported by SQLITE (Syntax error: Limit clause should come after UNION not before): Answer Use subqueries and perform the limit within them.

SQLite in Android How to update a specific row

I’ve been trying to update a specific row for a while now, and it seems that there are two ways to do this. From what I’ve read and tried, you can just use the: execSQL(String sql) method or the: update(String table, ContentValues values, String whereClause, String[] whereArgs) method. (Let me know if this is incorrect as I am new to

Clarification of Java/SQLite batch and auto-commit

I copied the following example from an SQLite Java library website: I’m struggling to understand the significance of toggling autoCommit() either side of executeBatch(). Does it merely prevent a commit being made for each individual batch operation? Thus a single ‘bulk’ commit is will be made by setAutoCommit(true). Answer The auto commit is disabled before batch because enabling auto commit

Return all duplicate rows

I’ve written this code to find duplicates and it works fine: The problem is, it’s returning just one of the duplicate rows. Is it possible to return all the duplicate rows? I’m guessing it may have something to do with the ‘GROUP BY’ but I’m not sure how to change it. I don’t want to delete the values, just return

Select statement in SQLite recognizing row number

I want to write SQLite statement something like this: but i don’t have such column RowNumber. I have primary key in my table. But is there row number by default that i could use ? Also i am searching info about writing more complicated SQLite statement. So if you have some links in bookmarks please share. Thanks. Answer You want

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