Scope of rows:all columns in all tables in a database Ordered byschema, table name, column id Sample results You could also get this Get this interactive HTML data dictionary in minutes withDataedo. See live HTML data dictionary sample Try for free...
SQL>@D:\oracle\ora90\rdbms\admin\utlxplan.sqlSQL> @D:\oracle\ora90\sqlplus\admin\plustrce.sqlSQL>list 1 SELECT * 2 FROMdept,emp 3* WHERE emp.deptno = dept.deptno;SQL> set autotrace traceonly SQL>set timing on 显示执行时间// SQL>set autorace on 显示执行计划// SQL>set autotrace tra...
The * says to list all the columns in the table - a shorter way of saying matchid, teamid, player, gtime Modify it to show the matchid and player name for all goals scored by Germany. To identify German players, check for: teamid = 'GER' 在进球表(goal)中查找德国球队(teamid = ...
*/String value=shardingValue.getValue()%tableNames.size()+"";if(tableName.endsWith(value)){returntableName;}}thrownewIllegalArgumentException();}} 分表时Collection<String>参数为上边计算出的分片库,对应的所有分片表的集合tablesNames;PreciseShardingValue为分片属性,其中logicTableName为逻辑表,columnName...
任何< 语句的 >select_listSELECT。 这包括子查询的 SELECT 列表和 SELECT 语句内的 INSERT 列表。 SELECT 语句中出现的子查询 IF 语句。 查询的 TOP、TABLESAMPLE、HAVING、GROUP BY、ORDER BY、OUTPUT...INTO 或FOR XML 子句。 OPENROWSET、 OPENQUERY、 OPENDATASOURCE、 OPENXML或任意 FULLTEXT 运算符的参数(...
MySQL的dd表是用来存放表结构和各种建表信息的,客户端建的表都存在mysql.table和mysql.columns表里,还有一个表mysql.column_type_elements比较特殊,用来存放SET和ENUM类型的字段集合值信息。看一下下面这张表的mysql.columns表和mysql.column_type_elements信息。为了缩短显示长度,这里只展示几个重要的值。
INSERT INTO [<columnstore index>] SELECT col1 /* include actual list of columns in place of col1*/ FROM [<Staging Table>] 此命令以类似于 bcp 或批量插入的方式将数据加载到列存储索引,但操作是以单批完成的。 如果临时表中的行数 < 102400,行将加载到增量行组;否则,行将直接加载到压缩行组。
CREATE INDEX index-name ON table-name(column[,column…]) 例:CREATE INDEX uspa ON 口令表(user,password) (9)DROP INDEX DROP INDEX table-name.index-name|PRIMARY 例:DROP INDEX 口令表.uspa 二、在程序中使用静态SQL语句 在程序设计阶段,将SQL命令文本作为TQuery组件的SQL属性值设置。
,views, anduser tables.) TheSYSOBJECTStable houses a couple dozen columns of data since it must hold information about virtually everything added to the server over time. Therefore, to find a list of user-created tables (thus ignoringsystem tables), we’ll need to find results where thextyp...
Alias all columns in a given table Alias column with variable value in SQL Script All MonthNames and Month numbers in sql server All queries combined using a UNION, INTERSECT or EXCEPT operator must have an equal number of expressions in their target lists. all the events in the workload ...