- explain结果如下 id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE report_product_sales_data index report_product_sales_data_unique,report_product_sales_data_hq_code_orgz_id_index PRIMARY
k=t.k order by t.k limit 5; +---+---+---+---+---+---+---+---+---+---+ | id | select_type | table | type | possible_keys | key | key_len | ref | rows | Extra | +---+---+---+---+---+---+---+---+---+...
- * - * @param query the analysed query string - * @return {@code true} if the query has {@code order by} clause, {@code false} otherwise - */ - private static boolean hasOrderByClause(String query) { - return countOccurrences(ORDER_BY, query) > countOccurrences(ORDER_BY_IN_WINDO...
select substr(t.acq_ins_code, 3) merAcqInsCode, t.mer_code, t.term_id, substr(t.mer_addr_name, 1, 12) merName, tt.trans_desc, t.rev_flag, t.trans_amt, concat(substr(t.sys_date, 1, 4), t.trans_datetime) transTime,t.before_trans_code, t.acct_num, t.retrivl_ref_num, ...
(actualtime=31.418..33.691rows=7loops=1)Stop Keys: (ROWNUM <= 30)-> Gather Merge (cost=98222.89..99026.61rows=6792width=240) (actualtime=31.415..33.686rows=7loops=1)Workers Planned: 3Workers Launched: 3-> Sort (cost=97222.85..97228.51rows=2264width=240) (actualtime=26.497..26.498rows=2...
Bundle Keys for Real-time Activities Supported Countries/Regions (Basic Capabilities) Supported Countries/Regions (Extended Capabilities) Device Access Fitness Machine Access Guide Fitness Machine Access Aerobic Fitness Machine Access Overview Integration Process Obtaining the Gym Profile Development...
A: No, we automatically remove all duplicate sources because columns are used as keys for the column headers. Q: Can I remove the Export Status column from the Orders or Users pages? A: Sure thing! You can hide this column (and many others!) by going to the Screen Options pages at ...
This method compares keys by using the default comparerDefault. This method performs a stable sort; that is, if the keys of two elements are equal, the order of the elements is preserved. In contrast, an unstable sort does not preserve the order of elements that have the same key. ...
AnIComparer<T>to compare keys. Returns IOrderedEnumerable<TSource> AnIOrderedEnumerable<TElement>whose elements are sorted in descending order according to a key. Exceptions ArgumentNullException sourceorkeySelectorisnull. Examples The following code example demonstrates how to useOrderByDescending<TSou...
Bundle Keys for Real-time Activities Supported Countries/Regions (Basic Capabilities) Supported Countries/Regions (Extended Capabilities) Device Access Fitness Machine Access Guide Fitness Machine Access Aerobic Fitness Machine Access Overview Integration Process Obtaining the Gym Profile Development...