Results of 1 - 4 of about 4 for grade (0.003 sec.)
- Subqueries 12389
- Subqueries are parenthesized query expressions that appear as part of a larger, outer query. Subqueries are usually based on SELECT ... FROM , but in DuckDB other query constructs such as PIVOT can also appear as a subquery. Scalar Subquery
...subquery_error_on_multiple_rows is set to false , in which case a row is selected randomly). Consider the following table: Grades grade course 7 Math 9 Math 8 CS CREATE TABLE grades (grade INTEGER, course VARCHAR); INSERT INTO grades VALUES (7, 'Math'...), (9, 'Math'), (8, 'CS'); We can run the following query to obtain the minimum grade: SELECT min(grade) FROM grades; min(grade) 7 By using a scalar subquery in the WHERE clause, we can figure out for which c...ourse this grade was obtained: SELECT course FROM grades WHERE grade = (SELECT min(grade) FROM grades); course Math ARRAY Subqueries Subque... - https://man.mtool.work/duckdb/2.0/sql/expressions/subqueries.html
- List Functions 8672
- Function Description list[index] Extracts a single list element using a (1-based) index . list[begin[:end][:step]] Extracts a sublist using slice conventions . Negative values are accepted. list1 && list2 Alias for list_has_any . list1 <->
..., index) Extracts the index th (1-based) value from the list . array_filter(list, lambda(x)) Alias for list_filter . array_grade_up(list[, col1][, col2]) Alias for list_grade_up . array_has(list, element) Alias for list_contains . array_has_all(list1,...generate_series(start[, stop][, step]) Creates a list of values between start and stop - the stop parameter is inclusive. grade_up(list[, col1][, col2]) Alias for list_grade_up . len(list) Alias for length . length(list) Returns the length of the lis...same as the input list's. See list_filter examples . list_first(list) Applies aggregate function first to the list . list_grade_up(list[, col1][, col2]) Works like list_sort , but the results are the indexes that correspond to the position in the ori... - https://man.mtool.work/duckdb/2.0/sql/functions/list.html
- Constraints 7951
- In SQL, constraints can be specified for tables. Constraints enforce certain properties over data that is inserted into a table. Constraints can be specified along with the schema of the table as part of the CREATE TABLE statement . In cert
...ams ( exam_id INTEGER PRIMARY KEY, subject_id INTEGER REFERENCES subjects(id), student_id INTEGER REFERENCES students(id), grade INTEGER ); INSERT INTO students VALUES (1, 'Student 1'); INSERT INTO subjects VALUES (1, 'CS 101'); INSERT INTO exams VALU... - https://man.mtool.work/duckdb/2.0/sql/constraints.html
- Python Client API 7914
- Connection class duckdb. Appender Bases: object append_row ( self , * args ) → None Buffer one row, one value per column, each converted as an executemany parameter would be append_rows ( self , rows : object ) → None Buffer each row of an
...'filter': ('list_filter', 0, ['ANY[]', 'LAMBDA']), 'first': ('list_first', 0, []), 'flatten': ('flatten', 0, ['T[][]']), 'grade_up': ('list_grade_up', 0, ['ANY[]']), 'has_all': ('list_has_all', 0, ['T[]', 'T[]']), 'has_any': ('list_has_any', 0, ['T[]...element. SQL: list_first . flatten ( * args : ValueOrExpr ) → ListExpr Flattens a nested list by one level. SQL: flatten . grade_up ( * args : ValueOrExpr ) → ListExpr The positions the elements would take once sorted, rather than the elements. SQL: l...ist_grade_up . has_all ( * args : ValueOrExpr ) → Expression Returns true if all elements of list2 are in list1. Arguments: list2. S... - https://man.mtool.work/duckdb/2.0/clients/python/reference/
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