Editing Troubleshooting of MySQL errors (section)

== Database and Table Operation Errors ==

=== ERROR 1005 (HY000) at line xx: Can't create table 'TABLE_NAME' (errno: 28) ===

Solutions
* Check if the disk space where mysql data folder located is enough. e.g. Input {{kbd | key=df -h}} on {{Linux}}
* More on [http://stackoverflow.com/questions/11045279/error-1005-hy000-cant-create-table-errno-150 mysql - ERROR 1005 (HY000): Can't create table (errno: 150) - Stack Overflow].

=== ERROR 1006 (HY000): Can't create database 'DATABASE_NAME' (errno: 28) ===
Solutions
* Check if the disk space where mysql data folder located is enough. e.g. Input {{kbd | key=df -h}} on {{Linux}}
* More on [http://stackoverflow.com/questions/18719748/error-1006-hy000-cant-create-database-errno-13-mysql-5-6-12 ERROR 1006 (HY000) Can't create database (errno: 13) MySQL 5.6.12 - Stack Overflow].

=== ERROR 1010: Error dropping database (can't rmdir) ===
Message: <pre>Error dropping database (can't rmdir '.\<db_name>\', errno: 17)</pre>

Solution
* Manually delete the leftover non-MySQL files (e.g. .sql files) inside the database directory, then retry DROP DATABASE — or simply delete the entire folder manually.

Root Cause
* MySQL's DROP DATABASE only removes files it manages. Foreign files left in the data directory (such as .sql dumps) prevent rmdir from removing the folder, causing errno 17 (ENOTEMPTY).

=== ERROR 1017 - Can't find file: '.\DATABASE\TABLE.frm' (errno: 22 - Invalid argument) ===
Message: [Err] 1017 - Can't find file: '.\DATABASE\TABLE.frm' (errno: 22 - Invalid argument)


Solutions
* Check the existence of file DATABASE\TABLE.frm. If not, you may need to create the TABLE before executed the MySQL query.
* Check the permission of file DATABASE\TABLE.frm or folder which the file located<ref>[http://stackoverflow.com/questions/12106727/mysql-copying-tables-files-gives-rise-to-error-1017-hy000-cant-find-file MySQL, copying tables files gives rise to "ERROR 1017 (HY000): Can't find file:" even though its there there - Stack Overflow]</ref><ref>[https://www.percona.com/forums/questions-discussions/mysql-and-percona-server/2762-error-1017-hy000-can-t-find-file ERROR 1017 (HY000): Can't find file - Percona Community]</ref>. ''unverified''

=== Navicat error: Field doesn't have a default value ===
<pre>
[ERR] 1364 - Field 'source' doesn't have a default value
</pre>

Solution:
* When importing from Excel to a database, if the 'source' field is empty or not specified, it's necessary to assign a value to the 'source' field. Alternatively, modify the field definition to allow the field value to be NULL.

=== ERROR 1813: Tablespace for table xxx exists ===
Message: ERROR 1813 Tablespace for table xxx exists.

Solution
* [https://stackoverflow.com/questions/15694168/error-tablespace-for-table-xxx-exists-please-discard-the-tablespace-before-imp mysql - Error: Tablespace for table xxx exists. Please DISCARD the tablespace before IMPORT - Stack Overflow]

=== ERROR 1690 - BIGINT UNSIGNED value is out of range ===
Message: MySQL error #1690 (BIGINT UNSIGNED value is out of range)

Solution <ref>[https://dev.mysql.com/doc/refman/8.0/en/out-of-range-and-overflow.html MySQL :: MySQL 8.0 Reference Manual :: 11.2.6 Out-of-Range and Overflow Handling]</ref><ref>[https://stackoverflow.com/questions/34115917/mysql-error-1690-bigint-unsigned-value-is-out-of-range-for-unix-timestamp MySQL error #1690 (BIGINT UNSIGNED value is out of range) for UNIX_TIMESTAMP() - Stack Overflow]</ref>:
<pre>
SET sql_mode = 'NO_UNSIGNED_SUBTRACTION';
</pre>

=== ERROR 1305 - FUNCTION MY_TABLE.MY_FUNCTION does not exist ===
Message: MySQL error 1305 - FUNCTION MY_TABLE.MY_FUNCTION does not exist

Solution: Fix the typo in the function name

=== ERROR 1170: BLOB/TEXT column 'url' used in key specification without a key length ===
Condition
* SQL syntax when tried to create the new table

<pre>
DROP TABLE IF EXISTS `my_table`;
/*!40101 SET @saved_cs_client     = @@character_set_client */;
/*!40101 SET character_set_client = utf8 */;
CREATE TABLE `my_table` (
  `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
  `title` varchar(500) COLLATE utf8mb4_unicode_ci DEFAULT NULL,
  `url` text COLLATE utf8mb4_unicode_ci NOT NULL,
  `status` tinyint(2) unsigned NOT NULL DEFAULT 1,
  PRIMARY KEY (`job_id`),
  UNIQUE KEY `url` (`url`) USING HASH
) ENGINE=InnoDB AUTO_INCREMENT=3573 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
/*!40101 SET character_set_client = @saved_cs_client */;
</pre>

Solution: BLOB/TEXT column 'url' used in key specification with a key length e.g. {{kbd | key=`url`(500)}}
<pre>
DROP TABLE IF EXISTS `my_table`;
/*!40101 SET @saved_cs_client     = @@character_set_client */;
/*!40101 SET character_set_client = utf8 */;
CREATE TABLE `my_table` (
  `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
  `title` varchar(500) COLLATE utf8mb4_unicode_ci DEFAULT NULL,
  `url` text COLLATE utf8mb4_unicode_ci NOT NULL,
  `status` tinyint(2) unsigned NOT NULL DEFAULT 1,
  PRIMARY KEY (`id`),
  UNIQUE KEY `url` (`url`(500))
) ENGINE=InnoDB AUTO_INCREMENT=3573 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
/*!40101 SET character_set_client = @saved_cs_client */;
</pre>