Database

MongoDB, MySQL, PostgreSQL, and Redis database operations.

9 modules

Module	Description
Database Insert	Insert data into database tables
Database Query	Execute SQL queries on PostgreSQL, MySQL, or SQLite databases
Database Update	Update data in database tables
MongoDB Find	Query documents from MongoDB collection
MongoDB Insert	Insert one or more documents into MongoDB collection
MySQL Query	Execute a SQL query on MySQL database and return results
PostgreSQL Query	Execute a SQL query on PostgreSQL database and return results
Redis Get	Get a value from Redis cache
Redis Set	Set a value in Redis cache

Modules

Database Insert

database.insert

Insert data into database tables

Parameters:

Name	Type	Required	Default	Description
table	string	Yes	-	Name of the table
data	object	Yes	-	Data to insert or update
database_type	select (postgresql, mysql, sqlite)	No	postgresql	Database type to connect to
connection_string	string	No	-	Database connection string
host	string	No	-	Database host
port	number	No	-	Database port
database	string	No	-	Database name
user	string	No	-	Database username
password	string	No	-	Database password
returning	array	No	-	Columns to return after insert (PostgreSQL)

Output:

Field	Type	Description
inserted_count	number	Number of rows inserted
returning_data	array	Number of rows inserted

Example: Insert single row

table: users
data: {"name": "John", "email": "john@example.com"}
database_type: postgresql

Database Query

database.query

Execute SQL queries on PostgreSQL, MySQL, or SQLite databases

Parameters:

Name	Type	Required	Default	Description
query	string	Yes	-	SQL query to execute
params	array	No	[]	Parameters for parameterized queries (prevents SQL injection)
database_type	select (postgresql, mysql, sqlite)	No	postgresql	Database type to connect to
connection_string	string	No	-	Database connection string
host	string	No	-	Database host
port	number	No	-	Database port
database	string	No	-	Database name
user	string	No	-	Database username
password	string	No	-	Database password
fetch	select (all, one, none)	No	all	How many rows to return from the query

Output:

Field	Type	Description
rows	array	Query result rows
row_count	number	Query result rows
columns	array	Query result rows

Example: Select with parameters

query: SELECT * FROM users WHERE status = $1
params: ["active"]
database_type: postgresql

Database Update

database.update

Update data in database tables

Parameters:

Name	Type	Required	Default	Description
table	string	Yes	-	Name of the table
data	object	Yes	-	Data to insert or update
where	object	Yes	-	WHERE conditions (column: value for equality)
database_type	select (postgresql, mysql, sqlite)	No	postgresql	Database type to connect to
connection_string	string	No	-	Database connection string
host	string	No	-	Database host
port	number	No	-	Database port
database	string	No	-	Database name
user	string	No	-	Database username
password	string	No	-	Database password

Output:

Field	Type	Description
updated_count	number	Number of rows updated

Example: Update user status

table: users
data: {"status": "active"}
where: {"id": 123}
database_type: postgresql

MongoDB Find

db.mongodb.find

Query documents from MongoDB collection

Parameters:

Name	Type	Required	Default	Description
connection_string	string	No	-	MongoDB connection string (defaults to env.MONGODB_URL)
database	string	Yes	-	Database name
collection	string	Yes	-	Collection name
filter	object	No	{}	MongoDB query filter (empty object {} returns all)
projection	object	No	-	Fields to include/exclude in results
limit	number	No	100	Maximum number of documents to return
sort	object	No	-	Sort order (1 for ascending, -1 for descending)

Output:

Field	Type	Description
documents	array	Array of matching documents
count	number	Array of matching documents

Example: Find all active users

database: myapp
collection: users
filter: {"status": "active"}
limit: 50

Example: Find with projection and sort

database: myapp
collection: orders
filter: {"total": {"$gt": 100}}
projection: {"_id": 0, "order_id": 1, "total": 1, "created_at": 1}
sort: {"created_at": -1}
limit: 20

MongoDB Insert

db.mongodb.insert

Insert one or more documents into MongoDB collection

Parameters:

Name	Type	Required	Default	Description
connection_string	string	No	-	MongoDB connection string (defaults to env.MONGODB_URL)
database	string	Yes	-	Database name
collection	string	Yes	-	Collection name
document	object	No	-	Document to insert (for single insert)
documents	array	No	-	Array of documents to insert (for bulk insert)

Output:

Field	Type	Description
inserted_count	number	Number of documents inserted
inserted_ids	array	Number of documents inserted

Example: Insert single document

database: myapp
collection: users
document: {"name": "John Doe", "email": "john@example.com", "created_at": "${timestamp}"}

Example: Insert multiple documents

database: myapp
collection: products
documents: [{"name": "Product A", "price": 19.99}, {"name": "Product B", "price": 29.99}]

MySQL Query

db.mysql.query

Execute a SQL query on MySQL database and return results

Parameters:

Name	Type	Required	Default	Description
host	string	No	-	Database host
port	number	No	3306	Database port
user	string	No	-	Database username
password	string	No	-	Database password
database	string	No	-	Database name
query	string	Yes	-	SQL query to execute
params	array	No	[]	Parameters for parameterized queries (prevents SQL injection)

Output:

Field	Type	Description
rows	array	Array of result rows as objects
row_count	number	Array of result rows as objects
columns	array	Array of result rows as objects

Example: Select products

query: SELECT id, name, price FROM products WHERE stock > 0 ORDER BY price DESC LIMIT 20

Example: Parameterized query

query: SELECT * FROM orders WHERE customer_id = %s AND created_at > %s
params: ["${customer_id}", "2024-01-01"]

PostgreSQL Query

db.postgresql.query

Execute a SQL query on PostgreSQL database and return results

Parameters:

Name	Type	Required	Default	Description
connection_string	string	No	-	Database connection string
query	string	Yes	-	SQL query to execute
params	array	No	[]	Parameters for parameterized queries (prevents SQL injection)

Output:

Field	Type	Description
rows	array	Array of result rows as objects
row_count	number	Array of result rows as objects
columns	array	Array of result rows as objects

Example: Select users

query: SELECT id, email, created_at FROM users WHERE active = true LIMIT 10

Example: Parameterized query

query: SELECT * FROM orders WHERE user_id = $1 AND status = $2
params: ["${user_id}", "completed"]

Redis Get

db.redis.get

Get a value from Redis cache

Parameters:

Name	Type	Required	Default	Description
key	string	Yes	-	Redis key
host	string	No	-	Redis host (from env.REDIS_HOST or explicit)
port	number	No	6379	Redis port
db	number	No	0	Redis database number

Output:

Field	Type	Description
value	any	The returned value
exists	boolean	The returned value
key	string	The returned value

Example: Get cached value

key: user:123:profile
host: ${env.REDIS_HOST}

Example: Get from remote Redis

key: session:abc
host: redis.example.com
port: 6379
db: 1

Redis Set

db.redis.set

Set a value in Redis cache

Parameters:

Name	Type	Required	Default	Description
key	string	Yes	-	Redis key
value	any	Yes	-	Value to store
ttl	number	No	-	Time to live in seconds (optional)
host	string	No	-	Redis host (from env.REDIS_HOST or explicit)
port	number	No	6379	Redis port
db	number	No	0	Redis database number

Output:

Field	Type	Description
success	boolean	Whether the operation completed successfully
key	string	Key identifier

Example: Cache user profile

key: user:123:profile
value: {"name": "John", "email": "john@example.com"}
ttl: 3600

Example: Set session data

key: session:abc
value: active
ttl: 1800
host: redis.example.com