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node_modules/node-red-node-sqlite/README.md

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+node-red-node-sqlite
+====================
+
+A Node-Red node to read and write a local sqlite database.
+
+Install
+-------
+
+Run the following command in your Node-RED user directory - typically `~/.node-red`
+
+    npm i --unsafe-perm node-red-node-sqlite
+
+**Notes**:
+
+  - Version 1.x requires nodejs v12 or greater.
+  - The install process requires a compile of native code. This can take 15-20 minutes on devices like a Raspberry Pi - please be prepared to wait a long time. Also if node.js is upgraded at any point you will need to rebuild the native part manually, for example.
+
+    cd ~/.node-red
+    npm rebuild
+
+Usage
+-----
+
+Allows access to a SQLite database.
+
+SQL Query sets how the query is passed to the node.
+
+SQL Query Via msg.topic and Fixed Statement uses the db.all operation against the configured database. 
+This does allow INSERTS, UPDATES and DELETES. By its very nature it is SQL injection... so be careful out there...
+
+SQL Type Prepared Statement also uses db.all but sanitizes parameters passed, eliminating the possibility of SQL injection.
+
+SQL Type Batch without response uses db.exec which runs all SQL statements in the provided string. No result rows are returned.
+
+When using Via msg.topic or Batch without response msg.topic must hold the query for the database.
+
+When using Via msg.topic, parameters can be passed in the query using a msg.payload array. Ex:
+
+```
+msg.topic = `INSERT INTO user_table (name, surname) VALUES ($name, $surname)`
+msg.payload = ["John", "Smith"]
+return msg;
+```
+
+When using Normal or Prepared Statement, the query must be entered in the node config.
+
+Pass in the parameters as an object in msg.params for Prepared Statement. Ex:
+```
+msg.params = {
+    $id:1,
+    $name:"John Doe"
+}
+```
+Parameter object names must match parameters set up in the Prepared Statement. If you get the error SQLITE_RANGE: bind or column index out of range be sure to include $ on the parameter object key.
+The SQL query for the example above could be: insert into user_table (user_id, user) VALUES ($id, $name);
+
+Using any SQL Query, the result is returned in msg.payload
+
+Typically the returned payload will be an array of the result rows, (or an error).
+
+You can load SQLite extensions by inputting a msg.extension property containing the full path and filename.
+
+The reconnect timeout in milliseconds can be changed by adding a line to `settings.js`
+
+`sqliteReconnectTime: 20000,`
+