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POAndroid: inserting sqlite record with AUTOINCREMENT column
 

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  1. POAndroid: inserting sqlite record with AUTOINCREMENT column
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    <p>I have an sqlite database on android created like this:</p> <pre><code>sqlite&gt; .schema CREATE TABLE criterion ('_id' INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, active text, important text, sort int, summary text, user text, category_id int, entrytype int); </code></pre> <p>The only way I can insert a record into this table is by specifying a value for <strong>_id</strong> which I want to auto-increment. This is the only way I can get the insert working:</p> <pre><code>recid = totalrecs + 1; String q = "insert into criterion (_id, active, important, sort, summary, user, category_id, entrytype) values (" + recid + ", \"1\", \"0\", 99, \"foobar\", \"1\", 99, 0)"; Log.d (TAG, "query:" + q); mDb.execSQL (q); </code></pre> <p>If I leave the _id column out and don't specify a value for _id, I get an error:</p> <pre><code>android.database.sqlite.SQLiteConstraintException: criterion._id may not be NULL: insert into criterion(active, important, sort, summary, user, category_id, entrytype) values ("1", "0", 99, "foobar", "1", 99, 0) </code></pre> <p>How do I arrange the query (or schema) so Android will take care of incrementing the <strong>_id</strong> column? </p> <p><strong>Update/fixed 2 lines above (removed NOT NULL, removed _id from query):</strong></p> <pre><code>CREATE TABLE criterion ('_id' INTEGER PRIMARY KEY AUTOINCREMENT, active text, important text, sort int, summary text, user text, category_id int, entrytype int); String q = "insert into criterion (active, important, sort, summary, user, category_id, entrytype) values (\"1\", \"0\", 99, \"foobar\", \"1\", 99, 0)"; </code></pre>
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    1. This table or related slice is empty.
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    1. COeek you should really consider using the `SQLiteDatabase` `insert` method rather than creating these raw string statements
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    2. COAgreed. It's unwieldy code however the circumstances didn't allow for an alternative method. Also, anyone following this thread should be forewarned that unsanitized/unescaped user input in an SQL insert statement, as shown above, is cause for egregious 'eek'.
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      1. USwufoo
 

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