Error map
SQLite syntax error sqlite3.OperationalError: near "x": syntax error
SQL · layer 5, Data
Centre: this error. First ring: errors it is linked with (12). Outer ring: what those are linked with. Colours show the layer of a request each error belongs to. Click any dot to re-centre the map on it; hover to follow its connections. The centre dot opens the error page.
Directly related (12)
sqlite3.OperationalError: unable to open database file
SQLite couldn’t open or create the database file — wrong path or missing/unwritable directory.
sqlite3.OperationalError: attempt to write a readonly database
The process can’t write to the SQLite file or its directory.
Column must appear in the GROUP BY clause / isn't in GROUP BY (MySQL 1055 only_full_group_by)
You selected a column that is neither grouped nor aggregated, so the result would be ambiguous.
MySQL ERROR 1136 (21S01): Column count doesn't match value count at row 1
An INSERT supplies a different number of values than columns.
sqlite3.OperationalError: database is locked (SQLITE_BUSY)
Another connection holds a write lock on the SQLite file, and this one gave up waiting.
Column reference is ambiguous / Column 'id' in field list is ambiguous (MySQL 1052)
A column name exists in more than one joined table, so the database doesn’t know which one you mean.
sqlite3.IntegrityError: FOREIGN KEY constraint failed
An insert/update/delete violated a foreign key in SQLite (with PRAGMA foreign_keys=ON).
MySQL ERROR 1248 (42000): Every derived table must have its own alias
A subquery in FROM wasn’t given an alias.
SQL Server: Incorrect syntax near 'x'. (Msg 102)
T-SQL couldn’t parse the statement near the shown token.
MySQL ERROR 1064 (42000): You have an error in your SQL syntax
MySQL couldn’t parse the query. The text after “near” shows where parsing failed.
sqlite3.DatabaseError: database disk image is malformed
The SQLite file is corrupted.
ERROR: aggregate functions are not allowed in WHERE (use HAVING) / MySQL 1111 Invalid use of group function
An aggregate (SUM, COUNT, AVG) was used in WHERE, which filters rows before grouping.
Two steps away (30)
FileNotFoundError: [Errno 2] No such file or directory: 'data.csv'
Python couldn’t find the file at that path — usually because relative paths resolve from the working directory, not the script.
sqlite3.OperationalError: no such column: x
SQLite can’t find the column — missing migration, typo, or a string written in double quotes.
No space left on device, but df shows free space (inodes exhausted)
The filesystem has run out of inodes — the slots for files — even though there are gigabytes free, usually because of millions of…
Linux: Permission denied
Your user (or the service user) lacks read/write/execute permission on a file, directory or one of its parents.
sqlite3.IntegrityError: UNIQUE constraint failed: users.email
An insert/update duplicated a value in a UNIQUE or PRIMARY KEY column in SQLite.
sqlite3.IntegrityError: NOT NULL constraint failed: table.column
A NULL went into a NOT NULL column in SQLite.
Subquery returns more than 1 row (MySQL 1242) / more than one row returned by a subquery used as an expression
A subquery used where a single value is expected (`= (SELECT …)`) returned several rows.
SQL Error: division by zero / Divide by zero error encountered
An expression divided by a value that was 0 for at least one row.
ERROR: syntax error at or near "x"
PostgreSQL couldn’t parse the SQL; the token shown is where parsing failed.
ERROR: missing FROM-clause entry for table "x"
The query references a table/alias that isn’t in the FROM clause (or uses the wrong alias).
ORA-00933: SQL command not properly ended
Oracle found extra clauses or syntax it doesn’t support at the end of a statement.
MySQL ERROR 1066 (42000): Not unique table/alias: 'x'
The same table or alias appears twice in a FROM/JOIN without distinct aliases.
Deadlock found when trying to get lock; try restarting transaction
Two transactions waited on each other’s locks; the database killed one so the other could continue.
Lock wait timeout exceeded; try restarting transaction (MySQL 1205)
A query waited too long for a row lock held by another transaction and gave up.
MySQL ERROR 1213 (40001): Deadlock found when trying to get lock; try restarting transaction
MySQL detected a deadlock between two transactions and rolled one back.
MySQL ERROR 1054 (42S22): Unknown column in 'field list'
The query references a column that doesn’t exist in the table (or an unquoted string being read as a column).
PostgreSQL: ERROR: column "x" does not exist
PostgreSQL can’t find the column — a missing migration, a case-sensitive quoted name, or a string literal written in double quote…
ERROR: window functions are not allowed in WHERE
A window function (ROW_NUMBER, RANK, LAG) was filtered directly in WHERE.
MySQL ERROR 1452: Cannot add or update a child row: a foreign key constraint fails
You inserted/updated a row whose foreign key value doesn’t exist in the referenced parent table.
SQL Server: The INSERT statement conflicted with the FOREIGN KEY constraint 'x'. (Msg 547)
The row references a parent that doesn’t exist (or a DELETE would orphan children).
MySQL ERROR 1222 (21000): The used SELECT statements have a different number of columns
The SELECTs combined with UNION return different numbers of columns.
SQL Server: Violation of PRIMARY KEY constraint 'x'. Cannot insert duplicate key in object 'y'. (Msg 2627)
An insert duplicated a primary key or unique constraint value.
SQL Server: Conversion failed when converting the varchar value 'x' to data type int. (Msg 245)
SQL Server tried to convert text to a number (often implicitly) and hit a non-numeric value.
SQL Server: Arithmetic overflow error converting expression to data type int. (Msg 8115)
A value or calculation exceeds the target data type’s range.
MySQL ERROR 1146 (42S02): Table 'db.table' doesn't exist
The query references a table that MySQL can’t find in that database.
MySQL ERROR 1366: Incorrect string value: '\xF0\x9F\x98\x80' for column
The text contains characters (usually emoji) that the column’s character set can’t store — the column or connection is `utf8`/`ut…
Fatal error: Uncaught mysqli_sql_exception
A MySQLi query or connection failed; since PHP 8.1 MySQLi throws exceptions by default.
error: object file .git/objects/x is empty / fatal: loose object is corrupt
The local Git object database is corrupted — usually after a crash, disk full or sync tool interference.
MySQL ERROR 126 (HY000): Incorrect key file for table; try to repair it
MySQL can’t use a table’s index file — usually a full tmp disk during a query, or MyISAM corruption.
Msg 530: The statement terminated. The maximum recursion 100 has been exhausted before statement completion. / MySQL 3636 Recursive query aborted after 1001 iterations
A recursive CTE exceeded the database’s recursion limit — often an infinite loop in hierarchical data.
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