其中,table_name 是表名,column1、column2 等是列名和数据类型,column_name 是用于分区的列名,partition_name1、partition_name2 等是分区名称。 3.1.3.3 创建散列分区 SQL> create table my_emp(empno number, ename varchar2(10)) partition by hash(empno) ( partition p1, partition p2 ); 1. 2. 3. ...
Selectquotename(SCHEMA_NAME(SCHEMA_ID))+'.'+QUOTENAME(name)ASSchemaTableFromsys.tables
<table name="tab" dataNode="dn1,dn2,dn3" rule="auto-sharding-long" /> <table name="user1" dataNode="dn1,dn2,dn3" rule="auto-sharding-long" /> <table name="user" dataNode="dn1,dn2,dn3" rule="auto-sharding-long" /> </schema> private void loadSchemas(Element root) { NodeLi...
The COLUMNS table has these columns: TABLE_CATALOG The name of the catalog to which the table containing the column belongs. This value is always def. TABLE_SCHEMA The name of the schema (database) to which the table containing the column belongs. TABLE_NAME The name of the table...
The COLUMNS table has these columns: TABLE_CATALOG The name of the catalog to which the table containing the column belongs. This value is always def. TABLE_SCHEMA The name of the schema (database) to which the table containing the column belongs. TABLE_NAME The name of the table...
"EXECUTE AT" with Dynamic Linked Server Name "explicit value must be specified for identity column in table" error in SQL 2000 "FROM clause have the same exposed names. Use correlation names to distinguish them" "No transaction is active." error when trying to send a transactional SQL statmen...
在SCHEMA jim下创建表jim.name和jim.address。 CREATE TABLE jim.name (c1 int, c2 int); CREATE TABLE jim.address (c1 int, c2 int); 给用户mike赋予SCHEMA jim的访问权限。 GRANT USAGE ON SCHEMA jim TO mike; (某张表权限)给用户mike赋予SCHEMA jim下某张表jim.name的查询权限。 GRANT SELECT ON...
table = Table( 'invalid_data.csv', schema={'fields': [{'name': 'key'}, {'name': 'value', 'type': 'integer'}]}) Iterating over the data triggers an exception due to the failed cast of 'not_an_integer' to int: for row in table.iter(): print(row) # Traceback (most recen...
public void WriteXmlSchema (string fileName); 参数 fileName String 要使用的文件的名称。 注解 WriteXmlSchema使用 方法将 的DataTable架构写入 XML 文档。 架构包括表、关系和约束定义。 XML 架构是使用 XSD 标准编写的。 若要将数据写入 XML 文档,请使用 WriteXml 方法。 另请参阅 DataTables 适用于 ...
foreign_catalog_name 識別要重新整理的外國目錄。 foreign_schema_name 識別要重新整理的外國架構。 foreign_table_name 識別要重新整理的外表。 名稱不得包含 時態規格或選項規格。範例SQL 複製 > REFRESH FOREIGN CATALOG some_catalog; > REFRESH FOREIGN SCHEMA some_catalog.some_schema; > REFRESH FOREIGN ...