---备份资源池 SELECT 'CREATE RESOURCE POOL ' || name || CASE WHEN memorysize IS NULL THEN ' ' ELSE ' MEMORYSIZE ' || '''' || memorysize || '''' END || CASE WHEN maxmemorysize = '' THEN ' ' ELSE ' MAXMEMORYSIZE ' || '''' || maxmemorysize || '''' END || CAS…
---备份资源池 SELECT 'CREATE RESOURCE POOL ' || name || CASE WHEN memorysize IS NULL THEN ' ' ELSE ' MEMORYSIZE ' || '''' || memorysize || '''' END || CASE WHEN maxmemorysize = '' THEN ' ' ELSE ' MAXMEMORYSIZE ' || '''' || maxmemorysize || '''' END || CAS…
SQL Server.Oracle.MySQL和Vertica数据库常用函数对比 Vertica数据库是HP公司新收购的用于BI方面的数据库. 绝对值 S:select abs(-1) value O:select abs(-1) value from dual M:select abs(-1) value from dual V:select abs(-1) 向上取整 S:select ceiling(-1.001) value O:select ceil(-1.001) value from…