SCOTT@PROD>insert into test select*from emp;SCOTT@PROD>commit;SCOTT@PROD>analyze table test compute statistics;SCOTT@PROD>select table_name,blocks,empty_blocks from user_tables where table_name='TEST'; 直接路径插入 代码语言:javascript 代码运行次数:0 运行 AI代码解释 SCOTT@PROD>insert/*+append*/...
<sql id="sqltoy_showcase"> <value> <![CDATA[ select * from sqltoy_user_log t where t.user_id=:userId ]]> </value> </sql> <!-- sqlId_数据库方言(小写) --> <sql id="sqltoy_showcase_mysql"> <value> <![CDATA[ select * from sqltoy_user_log t where t.user_id=:userId ]...
IsNullOrEmpty(columnNameItems)) { columnNameItems = "a.*"; } if (pageNumber < 1) { pageNumber = 1; } if (pageSize < 1) { pageSize = 1; } int beginNumber = (pageNumber - 1) * pageSize + 1; int endNumber = pageNumber * pageSize; string sqlPager = string.Format("select ...
string sqlPager =string.Format("select * from (select row_number() over(order by {1}) as __MyNewId, {0} from {2} as a {3} where 1=1 {4}) as __MyTempTable where __MyNewId between {5} and {6} order by __MyNewId asc;", columnNameItems, orderColumnNameAndAscOrDesc, table...
select event from events where toMonth(event_date) = 9; select event from events where subtractDays(event_date, 10) = '2021-09-20'; sql 上述写法,自定义查询会提示无法推导出event_date。 正确用法: select event from events where event_date >= subtractDays(today(), 10); sql1.4...
屬性的值。 值必須是BOOLEAN、STRING、INTEGER或DECIMAL常值。 -- Create table with user defined table properties>CREATETABLET(c1INT) TBLPROPERTIES('this.is.my.key'=12, this.is.my.key2 =true); >SHOWTBLPROPERTIES T; key value--- ---... this.is.my.key 12 this...
ADD COLUMN ... DEFAULT ... 新增直欄的預設值務必要和已有此直欄之表格中的直欄預設值相同。在已有此直欄的表格中查詢直欄的 SYSCAT.COLUMNS.IMPLICITVALUE。如果此值非 NULL,則使用 ALTER TABLE ADD COLUMN 陳述式的預設子句來設定預設值,使其符合 SYSCAT.COLUMNS.IMPLICITVALUE 中的值。 附註:直欄僅能加...
通过里面的 Path get(String attributeName),来获得我们想操作的字段。 CriteriaQuery<?> query 代表一个 specific 的顶层查询对象,它包含着查询的各个部分,比如 select 、from、where、group by、order by 等。CriteriaQuery 对象只对实体类型或嵌入式类型的 Criteria 查询起作用,简单理解,它提供了查询 ROOT 的方法...
ColumnEncryptionKeyNameParameter ColumnEncryptionKeyStatement ColumnEncryptionKeyValue ColumnEncryptionKeyValueParameter ColumnEncryptionKeyValueParameterKind ColumnEncryptionType ColumnEncryptionTypeParameter ColumnMasterKeyEnclaveComputationsParameter ColumnMasterKeyNameParameter ColumnMasterKeyParameter ColumnMasterKeyParameterKin...
14 + public static ISqlBuilder AppendSelect( this ISqlBuilder builder, string sql, bool condition ) { 15 + if( condition ) 16 + builder.AppendSelect( sql ); 17 + return builder; 18 + } 19 + 20 + /// <summary> 21 + /// 添加到From子句 22 + /// </summary> 23...