org.jooq.exception.DataAccessException: SQL [create index if not exists `IDX_FlatEntity_ASSOCS` on `FlatEntity_ASSOCS`(`_identity`)]; You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'if not exists `...
The Database Engine doesn't allow creating a unique index on columns that already include duplicate values, whether or not IGNORE_DUP_KEY is set to ON. If this is tried, the Database Engine displays an error message. Duplicate values must be removed before a unique index can be created ...
The Database Engine doesn't allow creating a unique index on columns that already include duplicate values, whether or not IGNORE_DUP_KEY is set to ON. If this is tried, the Database Engine displays an error message. Duplicate values must be removed before a unique index can be created ...
The Database Engine doesn't allow creating a unique index on columns that already include duplicate values, whether or not IGNORE_DUP_KEY is set to ON. If this is tried, the Database Engine displays an error message. Duplicate values must be removed before a unique index can be created ...
十三、sql server not exists exists : 强调的是是否返回结果集,不要求知道返回什么, 比如: select name from student where sex = 'm' and mark exists(select 1 from grade where ...) ,只要 exists引导的子句有结果集返回,那么exists这个条件就算成立了,大家注意返回的字段始终为1,如果改成“select 2 from...
MySQL does not support the obvious format: CREATEINDEXIFNOTEXISTSindex_nameONtable(column)ERROR1064(42000):You have an errorinyour SQL syntax;... 解法: You can check if the index (by name of the index) exists by using this syntax
Could not find any index named 'doesnotexist' for table 'DBO.Test'. Create With drop_existing is equivalent to DROP INDEX ... CREATE INDEX, not IF EXISTS ... DROP INDEX ... CREATE INDEX Gail Shaw Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci) ...
注意:唯一索引:unique index 普通索引:index 二十、SQL语句实现视图的创建 针对actor表创建视图actor_name_view,只包含first_name以及last_name两列,并对这两列重新命名,fist_name为first_name_v,last_name修改为last_name_v: CREATE TABLE IF NOT EXISTS actor ( ...
sql-data-type SQL1VARCHAR(integerOCTETS)HASHEDDOUBLEINTEGERINTDECIMALDECNUMERICNUM(5,0)( integer,0, integer)DATETIMESTAMP Notes: 1If you specify a function name, such as fn:upper-case, at the end of the XML pattern, the supported index data types might be a subset of the index data...
1 Azure database: create table if not exists 0 add schema to a missed table in SQL after checking if the table exists 0 My SQL server query doesn't recognize if a table exists -1 error for using a keyword as column name while pushing data from python using pyodbc to sql server...