where sid in (select sid from v$session where username='WQPF'and status='ACTIVE' and logon_time<sysdate-2/24) ) order by piece; 查看某个表上的索引 select * from all_indexes where table_owner='FUND_SUPERVISE' and table_name='T_STU_FEE_FLOW'; SELECT INDEX_NAME FROM USER_INDEXES WHE...
select pg_size_pretty(pg_total_relation_size('table_name')) as size; 5、查看表中索引大小 select pg_size_pretty(pg_indexes_size('product')); 6、获取各个表中的数据记录数 select relname as TABLE_NAME, reltuples as rowCounts from pg_class where relkind = 'r' order by rowCounts desc 7...
SELECT*FROM<table_name>WHERE<column_name><conditional_logic>'<keywords>'; 参数说明 示例 -- 检索log_tb表中,logmsg字段包含keyword1的所有行。SELECT*FROMlog_tbWHERElogmsg MATCH_ANY'keyword1';-- 检索log_tb表中,logmsg字段包含keyword1或者keyword2的所有行。SELECT*FROMlog_tbWHERElogmsg MATCH_ANY'k...
(select tablespace_name, max(bytes) as big_chunk from dba_free_space group by tablespace_name) f where f.tablespace_name = a.tablespace_name and a.next_extent > f.big_chunk union select a.index_name, a.next_extent, a.tablespace_name from all_indexes a,(select tablespace_name, max(by...
Gets a collection that contains the zero-based indexes of all currently selected items in the HtmlSelect control. Site Gets information about the container that hosts the current control when rendered on a design surface. (Inherited from Control) Size Gets or sets the height (in rows) of ...
You are permitted to specify DUAL as a dummy table name in situations where no tables are referenced: mysql> SELECT 1 + 1 FROM DUAL; -> 2 DUAL is purely for the convenience of people who require that all SELECT statements should have FROM and possibly other clauses. MySQL may ignore ...
Gets a collection that contains the zero-based indexes of all currently selected items in the HtmlSelect control. Site Gets information about the container that hosts the current control when rendered on a design surface. (Inherited from Control) Size Gets or sets the height (in rows) of ...
SELECT[ALL|DISTINCT|DISTINCTROW][HIGH_PRIORITY][STRAIGHT_JOIN][SQL_SMALL_RESULT][SQL_BIG_RESULT][SQL_BUFFER_RESULT][SQL_CACHE|SQL_NO_CACHE][SQL_CALC_FOUND_ROWS]select_expr[,select_expr]...[into_option][FROMtable_references[PARTITIONpartition_list]][WHEREwhere_condition][GROUPBY{col_name|expr...
where segment_name=upper('&table_name'); 5、 查看放在Oracle的内存区里的表 SQL>select table_name,cache from user_tables where instr(cache,'Y')>0; 三、 查看索引信息 1、 查看索引个数和类别 SQL>select index_name,index_type,table_name from user_indexes order by table_name; ...
{ FIRST | LAST } ]} [, ...] ] [ LIMIT { [offset,] count | ALL } ] [ OFFSET start [ ROW | ROWS ] ] [ FETCH { FIRST | NEXT } [ count ] { ROW | ROWS } ONLY ] [ {FOR { UPDATE | NO KEY UPDATE | SHARE | KEY SHARE } [ OF table_name [, ...] ] [ NOWAIT |...