Module quaint::ast

An abstract syntax tree for SQL queries.

The ast module handles everything related building abstract SQL queries without going into database-level specifics. Everything related to the actual query building is in the visitor module.

For prelude, all important imports are in quaint::ast::*.

Structs

AggregateToString	An aggregate function that concatenates strings from a group into a single string with various options.
Column	A column definition.
Count	Returns the number of rows that matches a specified criteria.
Delete	A builder for a DELETE statement.
Function	A database function definition
Grouping	A list of definitions for the GROUP BY statement
Insert	A builder for an INSERT statement.
JoinData	The JOIN table and conditions.
MultiRowInsert	A builder for an INSERT statement for multiple rows.
Ordering	A list of definitions for the ORDER BY statement
Over	Determines the partitioning and ordering of a rowset before the associated window function is applied.
Row	A collection of values surrounded by parentheses.
RowNumber	A window function that assigns a sequential integer number to each row in the query’s result set.
Select	A builder for a SELECT statement.
SingleRowInsert	A builder for an INSERT statement for a single row.
Table	A table definition
Union	A builder for a UNIONs over multiple SELECT statements.
Update	A builder for an UPDATE statement.

Enums

Compare	For modeling comparison expression
ConditionTree	Tree structures and leaves for condition building.
DatabaseValue	A value we can compare and use in database queries.
Expression	A database expression.
Id	A representation of a database ID value.
Join	A representation of a JOIN statement.
OnConflict	INSERT conflict resolution strategies.
Order	The ordering direction
ParameterizedValue	A value we must parameterize for the prepared statement.
Query	A database query
SqlOp	Calculation operations in SQL queries.
TableType	Either an identifier or a nested query.

Traits

Aliasable	An object that can be aliased.
Comparable	An item that can be compared against other values in the database.
Conjuctive	AND, OR and NOT conjuctive implementations.
Groupable	An item that can be used in the GROUP BY statement
IntoGroupByDefinition	Convert the value into a group by definition.
IntoOrderDefinition	Convert the value into an order definition with order item and direction
Joinable	An item that can be joined.
Orderable	An item that can be used in the ORDER BY statement

Functions

aggregate_to_string	Aggregates the given field into a string.
asterisk	A quick alias to create an asterisk to a table.
count	Count of the underlying table where the given expression is not null.
row_number	A number from 1 to n in specified order

Type Definitions

GroupByDefinition
OrderDefinition