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Sqlite Node - docs update (#869)

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* Update README.md

1. Updated node readme to match node's html help.
2. Added Example clarifying the use of parameters in a msg.topic query.
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unborn-andy
2022-01-05 18:20:06 +02:00
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storage/sqlite/locales/en-US/sqlite.html
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<p>SQL Type <i>Prepared Statement</i> also uses <b>db.all</b> but sanitizes parameters passed, eliminating the possibility of SQL injection.</p>
<p>SQL Type <i>Batch without response</i> uses <b>db.exec</b> which runs all SQL statements in the provided string. No result rows are returned.</p>
<p>When using <i>Via msg.topic</i> or <i>Batch without response</i> <code>msg.topic</code> must hold the <i>query</i> for the database.</p>
<p>When using <i>Via msg.topic</i>, parameters can be passed in the query using a <code>msg.payload</code> array. Ex:<br />
<code>msg.topic = `INSERT INTO user_table (name, surname) VALUES ($name, $surname)`<br />
msg.payload = ["John", "Smith"]<br />
return msg;</code><br />
<p>When using Normal or Prepared Statement, the <i>query</i> must be entered in the node config.</p>
<p>Pass in the parameters as an object in <code>msg.params</code> for Prepared Statement. Ex:<br />
<code>msg.params = {<br />