List<SQLUniqueConstraint>uc=newSQLUniqueConstraintBuilder() .onTable(testTables[2]) .addColumn("test_col1") .setConstraintName(constraintName) .build(conf); client.addUniqueConstraint(uc); UniqueConstraintsRequestrqst=newUniqueConstraintsRequest(testTables[2].getCatName(), testTables[2].getDbN...
ForeignKeyConstraintWarning ForeignKeyError ForeignKeyRelationship ForeignKeyWarning Çatal ForkNode FormatDocument FormatPageLeft FormatPageRight FormatSelection Biçimlendirme Araç Çubuğu FormDigest FormInstance FormPostBodyParameterNode FormPostBodyStringNode Form Etiketi Iletir Eğik çizgi FourColum...
ForeignKeyConstraintWarning ForeignKeyError ForeignKeyRelationship ForeignKeyWarning Widelec ForkNode FormatDocument FormatPageLeft FormatPageRight FormatWybieranie FormatowanieToolbar FormDigest Klasa FormInstance FormPostBodyParameterNode FormPostBodyStringNode Tag formularza Przesyła dalej Ukośnik do przodu...
0x4000 Replicates UNIQUE constraints. Any indexes related to the constraint are also replicated, even if options 0x10 and 0x40 aren't enabled. 0x8000 This option isn't valid for Publishers running SQL Server 2005 (9.x) and later versions. 0x10000 Replicates CHECK constraints as NOT FOR REPLI...
EXEC ('CREATETABLESchemaName.TableName(col1intnotnullCONSTRAINTPK_col1 PRIMARYKEYCLUSTERED (col1) )') at LinkedServerName; EXEC ('INSERTINTOSchemaName.TableNameVALUES(1),(2),(3)') at LinkedServerName; Query the data using four-part names: ...
0x4000 Replicates UNIQUE constraints. Any indexes related to the constraint are also replicated, even if options 0x10 and 0x40 aren't enabled. 0x8000 This option isn't valid for Publishers running SQL Server 2005 (9.x) and later versions. 0x10000 Replicates CHECK constraints as NOT FOR REPLI...
The following example creates a linked serverS1_instance1on an instance of SQL Server by using the SQL Server Native Client OLE DB provider. Vigtigt SQL Server Native Client OLE DB provider (SQLNCLI) remains deprecated and it isn't recommended to use it for new development work. ...
sql: SELECT count(*) FROM (SELECT count(*) FROM METABASE_DATABASE GROUP BY NAME, ENGINE HAVING count(*) > 1) t1 changes: - addUniqueConstraint: tableName: metabase_database columnNames: name, engine constraintName: idx_uniq_database_name_engine 15 changes: 15 additions & 0 deletions 15...
在SQL中,约束是用于限制数据完整性的规则。而LIKE操作符是一种用于模式匹配的操作符。 当我们需要在数据库中添加约束时,可以使用SQL的ALTER TABLE语句。例如,如果我们想要给表中的某个列添加约束来检查字符串的格式,可以使用以下语法: 代码语言:txt 复制 ALTER TABLE table_name ADD CONSTRAINT constraint_name CHECK...
3.unique约束:这样的约束就是给列的数据追加的不重复的约束类型 格式: alter table 表名 add constraint 约束名称 约束类型(列名) 比方说可以给ename列加个unique,让ename列的数据不重复 例子: alter table emp add constraint qwe unique(ename) ——— 4.默认约束:意思很简单就是让此列的数据默认为一定的数据...