Module sql_ast::ast [−][src]
Expand description
SQL Abstract Syntax Tree (AST) types
Structs
SQL assignment foo = expr as used in SQLUpdate
SQL column definition
An optionally-named ColumnOption: [ CONSTRAINT <name> ] <column-option>.
A single CTE (used after WITH): alias [(col1, col2, ...)] AS ( query )
The names in the column list before AS, when specified, replace the names
of the columns returned by the query. The parser does not validate that the
number of columns in the query matches the number of columns in the query.
A function call
An identifier, decomposed into its value or character data and the quote style.
A name of a table, view, custom type, etc., possibly multi-part, i.e. db.schema.obj
SQL ORDER BY expression
The most complete variant of a SELECT query expression, optionally
including WITH, UNION / other set operations, and ORDER BY.
A restricted variant of SELECT (without CTEs/ORDER BY), which may
appear either as the only body item of an SQLQuery, or as an operand
to a set operation like UNION.
Specifies the data processed by a window function, e.g.
RANGE UNBOUNDED PRECEDING or ROWS BETWEEN 5 PRECEDING AND CURRENT ROW.
A window specification (i.e. OVER (PARTITION BY .. ORDER BY .. etc.))
Enums
An ALTER TABLE (Statement::AlterTable) operation
Binary operators
ColumnOptions are modifiers that follow a column definition in a CREATE TABLE statement.
SQL data types
An SQL expression of any type.
External table’s available file format
One item of the comma-separated list following SELECT
A node in a tree, representing a “query body” expression, roughly:
SELECT ... [ {UNION|EXCEPT|INTERSECT} SELECT ...]
A top-level statement (SELECT, INSERT, CREATE, etc.)
A table-level constraint, specified in a CREATE TABLE or an
ALTER TABLE ADD <constraint> statement.
A table name or a parenthesized subquery with an optional alias
Unary operators
Primitive SQL values such as number and string
Specifies WindowFrame’s start_bound and end_bound