Learn how to use SQL functions in APL
Function Name | Description |
---|---|
parse_sql() | Interprets and analyzes SQL queries, making it easier to extract and understand SQL statements within datasets. |
format_sql() | Converts the data model produced by parse_sql() back into a SQL statement for validation or formatting purposes. |
Name | Type | Required or Optional | Description |
---|---|---|---|
sql_statement | string | Required | The SQL statement to analyze. |
SELECT * FROM db
retrieves all columns and rows from the table named db
.
SELECT
statement with a WHERE
clause, filtering customers
by subscription_status
.
JOIN
operation between orders
and customers
tables to match orders with customer names.
parse_sql()
function is used to parse an SQL statement that aggregates order counts by product_id
using the GROUP BY
clause.
user_id
from orders
based on purchase_date
, and the outer query selects names from users
based on those IDs.
users
by registration_date
in descending order.
name
and registration_date
of users from the users
table, and orders the results by registration_date
in descending order, showing how to sort data based on a specific column.
index_name
when executing the SELECT statement on the users
table.
user_info
column.
parse_sql()
back into a SQL statement. Useful for testing and ensuring that the parsing accurately retains the original structure and intent of the SQL statement.
Name | Type | Required or Optional | Description |
---|---|---|---|
parsed_sql_model | dictionary | Required | The structured data model output by parse_sql() . |
format_sql
.
SELECT
statement that retrieves user IDs and usernames from an user_accounts
table where the active
status is 1
. After parsing, it uses format_sql
to convert the parsed data back into a SQL string.
INNER JOIN
between orders
and customers
tables is parsed. The query selects orders and customer names for orders placed after January 1, 2023. format_sql
is then used to reformat the parsed structure into a SQL string.
sales
table, grouping by product_id
and having a condition on the count. After parsing, format_sql
reformats the output into an SQL string.