Check if a column exists in SQLite

Question

I need to check to see if a column exists and if it doesn\'t exist add it. From my research it looks like sqlite doesn\'t support IF statements and case statement should be

Answer 1

Some of these examples didn't worked for me. I'm trying to check whether my table already contains a column or not.

I'm using this snippet:

public boolean tableHasColumn(SQLiteDatabase db, String tableName, String columnName) {
    boolean isExist = false;
    Cursor cursor = db.rawQuery("PRAGMA table_info("+tableName+")",null);
    int cursorCount = cursor.getCount();
    for (int i = 1; i < cursorCount; i++ ) {
        cursor.moveToPosition(i);
        String storedSqlColumnName = cursor.getString(cursor.getColumnIndex("name"));
        if (columnName.equals(storedSqlColumnName)) {
            isExist = true;
        }
    }
    return isExist;
}

The examples above are querying the pragma table which is a metadata table and not the actual data, each column indicates the names, type and some other stuff about the table's columns. So the actual column names are within the rows.

Hope that this helps someone else.