python type_error ai_generated true

sqlalchemy.exc.ProgrammingError: (psycopg2.errors.SyntaxError) syntax error at or near "and"

ID: python/sqlalchemy-invalid-boolean-filter

Also available as: JSON · Markdown · 中文
80%Fix Rate
87%Confidence
0Evidence
2025-09-14First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
3.x active — — —

Root Cause

Incorrectly combining filter conditions using Python 'and' instead of SQLAlchemy's and_() function.

generic

中文

错误地使用 Python 'and' 而不是 SQLAlchemy 的 and_() 函数组合过滤条件。

Workarounds

  1. 95% success 
    from sqlalchemy import and_
result = session.query(User).filter(and_(User.age > 18, User.active == True)).all()
  2. 90% success 
    result = session.query(User).filter(User.age > 18).filter(User.active == True).all()

Dead Ends

Common approaches that don't work:

  1. 40% fail

    May work for some cases but can cause operator precedence issues.

  2. 50% fail

    SQLAlchemy may interpret incorrectly.