db

Description

Executes a query to a database.

Syntax

db connection=<field> query=[<string> | <field>]

Required Arguments

Parameter	Syntax	Description
connection	connection=<field>	Connection name.
query	query=[<string> | <field>]	SQL query.

info

If a data retrieval query is executed, the current data is replaced with new data. If a data processing query is executed, the resulting data contains the current data.

Time Stamps

A database query can include the {{_earliest}} or {{_latest}} placeholders, which will be replaced with the earliest or latest values from the source command.

Query Examples

Fetching data from a database configured with the connection name mysql:

Example #1

db connection=mysql query="SELECT * FROM user_info.user;"

Updating data in a database configured with the connection name mysql. The result retains the data from the source command:

Example #2

db connection=mysql query="INSERT INTO user_info.user (name, email) VALUES ('Ivan', 'ivan@mail.ru');"

Executing a command with a saved query. The query stored under the name mysql_query will be executed:

Example #3

db connection=mysql query=mysql_query

Example of a query to a database with time stamps:

Example #4

"SELECT * FROM user_info.user WHERE date_field >= {{_earliest}};"