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In this guide, we will describe some of the possible causes that can lead to sqlite3 error codes and then provide a means by which you can try to resolve this issue.
Presentation
Most SQLite C main interface routines returnnumerical result codes related to pass or failure, andIn case of failure I would say some idea of the reasonrefusal. This document attempts to explain what each of these types are.the numerical result code means.
“Error Codes” are the full subset of “Result Codes” which means thatSomething went wrong. There are mostly few error-free resultsCodes: SQLITE_ROW, sqlite_ok and SQLITE_DONE. TermThe “error code” approximates any result code other than these three.
Result codes are 32-bit signed integers.At least 8 significant bits of the entry code define the broad category.and are associated with the result “primary code”. Suggest more familiar songsdetailed information about our error is called”Total income code”
Note that the main result code is always part of the extended code.Result code. When using full 32-bit extended code, the applicationNickwhen unable to find the corresponding primary production code by retrieving itthe number of least significant bits of the extended result code.
All bar extension codes are also error codes. Therefore, the conditions”Extended result and code” “Extended alarm code” are interchangeable.
For historical compatibility, the C language returned by interfacesprimary result codes due to non-payment.The extended code for our last error might result in:usually obtained using the sqlite3_extended_errcode () interface.Sqlite3_extended_result_codes () interface can be used todatabase connection in alert where they putextended result codes using primary result codes instead.
All unique result codes are integers.Symbolic names for all posting results are generated usingThe “#define” macros are the last sqlite3.h header file.The main header file sqlite3.h has separate sections forcode result updates and extended code result definitions.
Sim The physical names of the main product code are taken from the “SQLITE_XXXXXX” method, whereXXXXXX is a sequence of a capital letters of the alphabet. ExtendedResult code names are “SQLITE_XXXXXX_YYYYYYY” XXXXXX, wherethe part is the corresponding primary result code, andYYYYYYY is an extension that further classifies the resulting code.
The names and value numbers for existing result codes are fixed.and permanent. New result codes and above all new extended codesResult codes may appear in future versions of SQLite.
31 discounts on results defined in sqlite3.h and listed in sort alphabetically below:
71 extended result code Defined in sqlite3.h and are recognized below in alphabetical order:
Those for explanations are all 102The resulting code values are given below,in numerical order.
(0) SQLITE_OK
The result code is SQLITE_OK, which means the job completed successfully and that there were no mistakes. Most of the other coupon codes with results indicate errors.
(1) SQLITE_ERROR
The SQLITE_ERROR Result Code is an untagged error code that is used when Usually a completely different error code is available.
(2) INTERNAL_SQLITE
The SQLITE_INTERNAL result indicates an internal code failure. In working version of SQLite, this application should never see this Exit code. When the application encounters this unique result code, it will display that usually there is a bug in the website engine.
SQLite hasn’t generated this result code lately. Application-defined SQL functions or Virtual or event tables, VFS or other extensions can be added to The result code must be returned continuously.
(3) SQLITE_PERM
The lead code SQLITE_PERM indicates that the requested mode is the start of a search for a newly created database may not be provided.
(4) SQLITE_ABORT
The SQLITE_ABORT result code indicates that the remarkable operation was aborted before filling there will be an application. See also: SQLITE_INTERRUPT.
If its toSqlite3_exec () callback returns nonzero, then а SQLite3_exec () returns SQLITE_ABORT.
When a ROLLBACK operation on a specific database has the same connection as. happens a can be read or written, then a pending check or write can fail with some kind of SQLITE_ABORT or SQLITE_ABORT_ROLLBACK error.
Besides being an effect code, the SQLITE_ABORT value is also used as a conflict resolution mode returned from sqlite3_vtab_on_conflict () interface.
(5) SQLITE_BUSY
The SQLITE_BUSY result code indicates a database file failure. ultimately recorded (or in some cases read) for the fact of simultaneous activity other types of database connections, usually database correlation in a separate process.
For example, if process A can be in the middle of a high-quoted transaction and at the same time, process B is trying to start a pending write transaction, Process B will return a SQLITE_BUSY result because SQLite basically supports the author on the calendar. Process B must wait for process A to complete transaction before starting a new transaction. v sqlite3_ user interfacesbusy_timeout () and sqlite3_busy_handler () and the pragma available busy_timeout is a way to handle B to make it easier to manage with SQLITE_BUSY errors.
The SQLITE_BUSY error can occur at any time in a transaction: when The sale starts for the first time, at the time of publication or possibly an update, or when the trade starts. To prevent SQLITE_BUSY errors in the middle of a transaction, a particular application can start completely IMMEDIATELY with. use start a transaction. The BEGIN IMMEDIATE command will probably return on its own. SQLITE_BUSY, but if successful, SQLite fully guarantees this subsequent transactions with the same clientele until the next COMMIT will return SQLITE_BUSY.
SQLITE_BUSY result code is different around SQLITE_LOCKED SQLITE_BUSY indicates that the conflict suggests connecting to a separate database, possibly in a separate process, while SQLITE_LOCKED usually a conflict within the same database connection (or sometimes shared cache database service).
(6) SQLITE_LOCKED
The SQLITE_LOCKED result code indicates where the write operation was not possible. exist due to conflict in the abovethat database connection, or Conflict followed by a different database connection using each shared cache.
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For scientific research, the DROP TABLE statement cannot be controlled while another thread provided by this table for the same interaction with the database because Cleaning the table may cause the table to fall under the entire participant. Reader.
SQLITE_LOCKED result code is different from SQLITE_BUSY SQLITE_LOCKED indicates a conflict with the same database connection (or connect to shared cache) displays SQLITE_BUSY at the same time conflict with another database connection, possibly trusted Treat.
(7) SQLITE_NOMEM
The SQLITE_NOMEM result code indicates that SQLite cannot establish a connection on whatever memory is needed to complete the process. In other words, just call sqlite3_malloc () inside or sqlite3_realloc () failed a case where a persistently allocated memory was required to continue working operation.
(8) SQLITE_READONLY
The SQLITE_READONLY result code is returned whenever you try Fine tuningsome data for which no peak database connection is available Permission to write.
(9) SQLITE INTERRUPT
The result code SQLITE_INTERRUPT indicates that the procedure the interface was interrupted by sqlite3_interrupt (). See Also: SQLITE_ABORT
(10) SQLITE_IOERR
The result code SQLITE_IOERR indicates that the type of operation could not be completed because your current operating system reported an I / O error.
A full disk will usually throw a SQLITE_FULL error, preferably like error SQLITE_IOERR.
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