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How do I get metadata from Snowflake?
Snowflake automatically generates metadata for files in internal (i.e. Snowflake) stages or external (Amazon S3, Google Cloud Storage, or Microsoft Azure) stages. This metadata is “stored” in virtual columns that can be: Queried using a standard SELECT statement.
How do you make a stored procedure snowflake?
Snowflake stored procedures are written in JavaScript, which can execute SQL statements by calling a JavaScript API….Implementation and API
- Execute a SQL statement.
- Retrieve the results of a query (i.e. a result set).
- Retrieve metadata about the result set (number of columns, data types of the columns, etc.).
Are there stored procedures in Snowflake?
Snowflake provides a JavaScript API (in the form of JavaScript objects and methods). The API enables stored procedures to execute database operations such as SELECT, UPDATE, and CREATE.
What is procedure in Snowflake?
Stored procedures allow you to extend Snowflake SQL by combining it with JavaScript so that you can include programming constructs such as branching and looping. Next Topics: Overview of Stored Procedures. Understanding Caller’s Rights and Owner’s Rights Stored Procedures.
Does Snowflake have a data dictionary?
Like any good database, Snowflake has a data dictionary that we expose to users. We call it the Information Schema. In fact it is a set of views against our metadata layer that make it easy for you to examine some of the information about the databases, schemas, and tables you have built in Snowflake.
What is stream in Snowflake?
A stream is a new Snowflake object type that provides change data capture (CDC) capabilities to track the delta of changes in a table, including inserts and data manipulation language (DML) changes, so action can be taken using the changed data.
How is metadata stored in a snowflake file?
Snowflake automatically generates metadata for files in internal (i.e. Snowflake) stages or external (Amazon S3, Google Cloud Storage, or Microsoft Azure) stages. This metadata is “stored” in virtual columns that can be: Queried using a standard SELECT statement. Loaded into a table, along with the regular data columns, using COPY INTO .
Can a stored procedure have the same name in Snowflake?
Multiple stored procedures in the same schema can have the same name, as long as their signatures differ, either by the number of arguments or the argument types. When an overloaded stored procedure is called, Snowflake checks the arguments and calls the correct stored procedure. An example is included in Overloading Stored Procedure Names.
Can a JavaScript definition be valid in Snowflake?
The definition can consist of any valid JavaScript; however, Snowflake does not validate the code at stored procedure creation time (i.e. creation of the stored procedure succeeds regardless of whether the code is valid). If the code is not valid, errors will be returned when the stored procedure is called.
How to query a staged file in Snowflake?
To stage and query the files: The file format is required in this example to correctly parse the fields in the staged files. In the second query, the file format is omitted, causing the | field delimiter to be ignored and resulting in the values returned for $1 and $2.