日本語のみで絞り込む
2013/11/26 -Your problem is that "This is a test!" is a string and iterable with 15 elements. db.execute("INSERT INTO present VALUES('test', ?, 9)", ("This ...
2025/7/23 -In SQLite to set a column value to NULL , we have to use UPDATE statement for it. We can also use WHERE clause, if we want only some specific ...
2020/6/4 -I saw in the documentation that I need to use None in my code to tell Python to put a NULL in, but I'm not exactly sure where it goes. Do I just ...
2026/10/19 -Each invocation executes SQL in a fresh in-memory database and prints pipe-separated rows, displaying missing values as NULL . These toy ...
2026/5/14 -Each column of the new row is populated with its default value, or with a NULL if no default value is specified as part of the column definition ...
#It follows that since there is no NULL in Python, you cannot insert. >>> #NULL via a substituted value. >>> cursor.execute("INSERT INTO Test VALUES(?);", (NULL ...
2023/11/20 -Hello, I have a query that is to be used for 4 different options. The parameters differ depending on the option.
The SQL statement should be aborted with an error ( SQLITE_DENY ). The column should be treated as a NULL value ( SQLITE_IGNORE ).
2024/2/4 -tl;dr - INSERT OR IGNORE will silently fail if any constraint is violated (even a NOT NULL on a column type!). If you want to express "insert ...
This tutorial shows you how to use the SQLite NULLIF function to treat the special value such as zero or empty string like the NULL values.