Error map
42P18 ERROR: could not determine data type of parameter $1
PostgreSQL · 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)
Blue Screen: IRQL_NOT_LESS_OR_EQUAL (Stop code 0x0000000A)
A driver accessed memory at an interrupt level where that’s not allowed — almost always a faulty or incompatible driver, sometime…
ERROR: there is no unique or exclusion constraint matching the ON CONFLICT specification
INSERT … ON CONFLICT (cols) names columns that don’t have a matching unique index/constraint.
MySQL ERROR 1093 (HY000): You can't specify target table 'x' for update in FROM clause
An UPDATE/DELETE uses a subquery that reads from the same table, which MySQL doesn’t allow directly.
ERROR: currval of sequence "x" is not yet defined in this session
currval() was called before nextval() in the same session.
IncorrectResultSizeDataAccessException: query did not return a unique result: 2
A query expected one row but found several.
MySQL ERROR 1175 (HY000): You are using safe update mode and you tried to update a table without a WHERE that uses a KEY column
MySQL Workbench’s safe updates mode blocked an UPDATE/DELETE without a key-based WHERE.
MySQL ERROR 1241 (21000): Operand should contain 1 column(s)
A subquery or expression returned several columns where only one is expected.
ERROR: column "x" is of type integer but expression is of type text — HINT: You will need to rewrite or cast the expression.
An INSERT/UPDATE supplies a value of a different type than the column, and PostgreSQL won’t cast implicitly.
Windows upgrade error 0xC1900101 (driver error, rolled back)
A Windows feature update failed and rolled back because a driver crashed or was incompatible during installation.
ERROR: operator does not exist: integer = text
A comparison or operation mixes types PostgreSQL won’t implicitly convert.
Blue screen: DRIVER_POWER_STATE_FAILURE (0x0000009F)
A driver didn’t complete a power transition (sleep, wake, shutdown) in time.
ERROR: bind message supplies 2 parameters, but prepared statement requires 1
The number of query parameters sent doesn’t match the $1, $2 … placeholders in the SQL.
Two steps away (25)
Blue Screen: CRITICAL_PROCESS_DIED (Stop code 0x000000EF)
A process Windows can’t run without (csrss, wininit, smss…) stopped unexpectedly, so the system halted.
Blue Screen: MEMORY_MANAGEMENT (Stop code 0x0000001A)
Windows detected a severe memory-management error — commonly faulty RAM, unstable memory settings or a bad driver.
Blue screen: PAGE_FAULT_IN_NONPAGED_AREA (0x00000050)
The kernel or a driver accessed memory that wasn’t there — faulty drivers, antivirus, RAM or disk issues.
PostgreSQL: ERROR: duplicate key value violates unique constraint
An INSERT/UPDATE would create a duplicate in a UNIQUE or PRIMARY KEY column — or the id sequence is behind the existing data.
ERROR: insert or update on table "x" violates foreign key constraint "fk" — Key (user_id)=(5) is not present in table "users"
The row references a parent row that doesn’t exist.
ERROR: update or delete on table "users" violates foreign key constraint on table "orders" — Key (id)=(5) is still referenced
You tried to delete a row that other rows still reference.
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.
org.hibernate.LazyInitializationException: could not initialize proxy - no Session
A lazy-loaded association was accessed after the Hibernate session/transaction closed.
org.hibernate.TransientObjectException: object references an unsaved transient instance - save the transient instance before flushing
An entity references another entity that hasn’t been saved yet, and no cascade is configured.
org.hibernate.exception.ConstraintViolationException: could not execute statement
The database rejected an insert/update because of a constraint (unique, foreign key, not null).
MySQL ERROR 1690 (22003): BIGINT UNSIGNED value is out of range
Arithmetic on UNSIGNED columns produced a negative result.
ERROR: invalid input syntax for type integer: "abc"
A string couldn’t be converted to the column’s type (integer, numeric, boolean, date…).
ERROR: invalid input syntax for type uuid: "x"
A value that isn’t a valid UUID was compared with or inserted into a uuid column.
Windows Error 0x80070005 (E_ACCESSDENIED): Access is denied
Windows refused an operation because the account or process lacks permission — seen in Windows Update, installers, Task Scheduler…
Windows Error 0x80070002: The system cannot find the file specified
A file or registry entry Windows expected is missing — common in Windows Update, backups and app installs.
Authentication plugin 'caching_sha2_password' cannot be loaded
An old MySQL client/driver can’t use MySQL 8’s default authentication plugin.
ERROR: numeric field overflow — A field with precision 5, scale 2 must round to an absolute value less than 10^3
A number doesn’t fit the column’s numeric(precision, scale) or integer range.
ERROR: date/time field value out of range: "31/12/2024" — HINT: Perhaps you need a different "datestyle" setting.
PostgreSQL parsed a date in the wrong order (DMY vs MDY) or got an impossible value.
ERROR: malformed array literal: "x"
A value sent to an array column isn’t in PostgreSQL array syntax ({a,b}).
Blue screen: SYSTEM_SERVICE_EXCEPTION (0x0000003B)
A system call into the kernel crashed — almost always a driver bug (graphics, audio, antivirus, VPN) or corrupt system files.
Blue screen: KMODE_EXCEPTION_NOT_HANDLED (0x0000001E)
A kernel-mode program raised an exception nothing handled — usually a driver; sometimes caused by Fast Startup or RAM.
Blue screen: DPC_WATCHDOG_VIOLATION (0x00000133)
A driver spent too long at high priority (DPC level) — typically SSD/NVMe firmware, storage controller drivers (iaStorA.sys) or g…
ERROR: current transaction is aborted, commands ignored until end of transaction block
An earlier statement in the same transaction failed; PostgreSQL rejects everything until you ROLLBACK.
ERROR: prepared statement "s1" already exists (PgBouncer transaction mode)
Named prepared statements collided — typically because PgBouncer in transaction pooling mode hands connections between clients.
pg_dump: error: aborting because of server version mismatch
Your pg_dump client is older than the server you’re dumping.
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