1. What is the purpose of the PRINT command?
The PRINT command in Snowflake is used to print the results of a query to the console or to a specified file.
2. What is the syntax of the PRINT command?
The syntax of the PRINT command is as follows:
PRINT [ALL] <select_statement> [<filename>];
Where:
- ALL is an optional keyword that specifies that all rows from the result set should be printed.
- is a valid SQL SELECT statement that returns a result set.
- is an optional filename that specifies the destination file where the results should be printed. If no filename is specified, the results will be printed to the console.
3. How do I print the results of a query to the console?
To print the results of a query to the console, simply use the PRINT command without specifying a filename. For example:
PRINT SELECT * FROM my_table;
This will print all rows from the my_table
table to the console.
4. How do I print the results of a query to a file?
To print the results of a query to a file, specify the filename after the PRINT command. For example:
PRINT SELECT * FROM my_table TO '/tmp/my_table.csv';
This will print all rows from the my_table
table to the file /tmp/my_table.csv
.
5. How do I print the results of a query with headings?
To print the results of a query with headings, use the HEADER
keyword in the PRINT command. For example:
PRINT HEADER SELECT * FROM my_table;
This will print all rows from the my_table
table to the console, with headings for each column.
6. How do I print the results of a query with a custom separator?
To print the results of a query with a custom separator, use the SEP
keyword in the PRINT command. For example:
PRINT SEP '|' SELECT * FROM my_table;
This will print all rows from the my_table
table to the console, with a pipe character (|
) as the separator between each column.
7. How do I print the results of a query with a custom null value?
To print the results of a query with a custom null value, use the NULL
keyword in the PRINT command. For example:
PRINT NULL 'N/A' SELECT * FROM my_table;
This will print all rows from the my_table
table to the console, with the string N/A
displayed for any null values.