In the Translator, you can read data from a database by either calling stored procedures or using conn:query
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{} to execute
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ad hoc SQL SELECT
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statements on a database. See Writing SQL Statements.
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local R = conn:query{sql='SELECT * FROM Patients WHERE LastName=' ..conn:quote(lastName)} |
The conn:query{}
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example of query and annotation results
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Link to “writing SQL statements“
Can also call stored procedures (link to page) method prevents the accidental use of SQL statements that might modify the database from the Translator, which automatically executes when you make script changes or sample data changes.
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Using the Annotations you can view database query result tables easily:  The function returns the database query result sets and a Lua table of all result sets. A for loop can be used to iterate through the results table and access values using  |
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pcall() can be used to perform a protected call, capturing any returned database errors allowing you to appropriately handle errors according to your needs. In this example, we are using  |