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POWhat really happens when I use varchar(10) in the sqlite command-line shell?
 

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  1. POWhat really happens when I use varchar(10) in the sqlite command-line shell?
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    <p>I'm messing around with SQLite for the first time by working through some of the SQLite documentation. In particular, I'm using <a href="http://sqlite.org/sqlite.html" rel="nofollow noreferrer">Command Line Shell For SQLite</a> and the SoupToNuts <a href="http://souptonuts.sourceforge.net/readme_sqlite_tutorial.html" rel="nofollow noreferrer">SQLite Tutorial</a> on Sourceforge.</p> <p>According to the SQLite <a href="http://www.sqlite.org/datatype3.html" rel="nofollow noreferrer">datatype documentation</a>, there are only 5 datatypes in SQLite. However, in the two tutorial documents above, I see where the authors use commands such as</p> <pre><code>create table tbl1(one varchar(10), two smallint); create table t1 (t1key INTEGER PRIMARY KEY,data TEXT,num double,timeEnter DATE); </code></pre> <p>which contain datatypes that aren't listed by SQLite, yet these commands work just fine.</p> <p>Additionally, when I ran .dump to see the SQL statements, these datatype specifications are preserved:</p> <pre><code>sqlite&gt; CREATE TABLE Vulnerabilities ( ...&gt; VulnerabilityID unsigned smallint primary key, ...&gt; VulnerabilityName varchar(10), ...&gt; VulnerabilityDescription longtext); sqlite&gt; .dump PRAGMA foreign_keys=OFF; BEGIN TRANSACTION; CREATE TABLE Vulnerabilities ( VulnerabilityID unsigned smallint primary key, VulnerabilityName varchar(10), VulnerabilityDescription longtext); COMMIT; sqlite&gt; </code></pre> <p>So, what gives? Does SQLite keep a reference for any datatype specified in the SQL yet converts it behind the scenes to one of its 5 datatypes? Or is there something else I'm missing?</p>
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      1. POWhat really happens when I use varchar(10) in the sqlite command-line shell?
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