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django/db/backends/sqlite3/operations.py

Summary

Maintainability
C
1 day
Test Coverage

File operations.py has 349 lines of code (exceeds 250 allowed). Consider refactoring.
Open

import datetime
import decimal
import uuid
from functools import lru_cache
from itertools import chain
Severity: Minor
Found in django/db/backends/sqlite3/operations.py - About 4 hrs to fix

    Function check_expression_support has a Cognitive Complexity of 12 (exceeds 5 allowed). Consider refactoring.
    Open

        def check_expression_support(self, expression):
        bad_fields = (models.DateField, models.DateTimeField, models.TimeField)
        bad_aggregates = (models.Sum, models.Avg, models.Variance, models.StdDev)
        if isinstance(expression, bad_aggregates):
            for expr in expression.get_source_expressions():
    Severity: Minor
    Found in django/db/backends/sqlite3/operations.py - About 1 hr to fix

    Cognitive Complexity

    Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

    A method's cognitive complexity is based on a few simple rules:

    • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
    • Code is considered more complex for each "break in the linear flow of the code"
    • Code is considered more complex when "flow breaking structures are nested"

    Further reading

    Function sql_flush has 6 arguments (exceeds 4 allowed). Consider refactoring.
    Open

        def sql_flush(self, style, tables, *, reset_sequences=False, allow_cascade=False):
    Severity: Minor
    Found in django/db/backends/sqlite3/operations.py - About 45 mins to fix

      Function datetime_trunc_sql has 5 arguments (exceeds 4 allowed). Consider refactoring.
      Open

          def datetime_trunc_sql(self, lookup_type, sql, params, tzname):
      Severity: Minor
      Found in django/db/backends/sqlite3/operations.py - About 35 mins to fix

        Function on_conflict_suffix_sql has 5 arguments (exceeds 4 allowed). Consider refactoring.
        Open

            def on_conflict_suffix_sql(self, fields, on_conflict, update_fields, unique_fields):
        Severity: Minor
        Found in django/db/backends/sqlite3/operations.py - About 35 mins to fix

          Function time_trunc_sql has 5 arguments (exceeds 4 allowed). Consider refactoring.
          Open

              def time_trunc_sql(self, lookup_type, sql, params, tzname=None):
          Severity: Minor
          Found in django/db/backends/sqlite3/operations.py - About 35 mins to fix

            Function datetime_extract_sql has 5 arguments (exceeds 4 allowed). Consider refactoring.
            Open

                def datetime_extract_sql(self, lookup_type, sql, params, tzname):
            Severity: Minor
            Found in django/db/backends/sqlite3/operations.py - About 35 mins to fix

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