GRANT CREATEIN ON SCHEMA SCHEMA-name TO USER //数据库特权 grant connect,createtab,dbadm on database to user //索引特权 grant control on index index-name to user //信息帮助 (? XXXnnnnn ) 例:? SQL30081 //SQL 帮助(说明 SQL 语句的语法) help statement 例如,help SELECT SQLSTATE 帮助(说明...
else ExplainDummyGroup("Utility Statement", NULL, es); }}/* * ExplainOnePlan - * given a planned query, execute it if needed, and then print * EXPLAIN output * * "into" is NULL unless we are explaining the contents of a CreateTableAsStmt, * in which case executing the query should...
I can't explain such a statement by him on the basis of logic. He must have blown his top. 我从逻辑推理方面解释不了他讲的这番话,他想必是神经错乱了. 《现代汉英综合大词典》 He will explain it fully once and for all. 他将把它充分地解释一次就此了结. 《简明英汉词典》 Many theories pur...
将mysql默认的结束符由;换成$$ create trigger tri_after_insert_cmd after insert on cmd for each row begin # 表示SQL语句开始 if NEW.success = 'no' then # 新记录都会被MySQL封装成NEW对象insert into errlog(err_cmd,err_time) values(NEW.cmd,NEW.sub_time); end if; # 表示if语句结束,加上...
The specified QUERY or SINGLE SELECT statement is not executed while the EXPLAIN statement is being executed. The EXPLAIN statement generates a result table. This result table may be named. If the optional name specification is missing, the result table is given the name SHOW. The sequence in ...
Output. inputValue is something else. Example 6. enum with switch case. A switch statement utilizing enums in C# enables the execution of distinct code paths contingent upon the values of the enum. Enums serve as an excellent means of establishing a collection of named constants, and their ...
else Numbers=0; return end end For every letter, message(i), the else-clause will be executed resulting in an early return from the function. ~isempty(strfind(letters{j},message(i))) is hard to read and understand. "this function[sic] creates ...
END LOOP;例: OPEN c1; ins_loop: LOOP FETCH c1 INTO v_dept, v_deptname, v_admdept; IF at_end = 1 THEN LEAVEins_loop; --中断循环 ELSEIF v_dept = 'D11' THEN ITERATEins_loop; --下一个循环 END IF; INSERT INTO department (deptno, deptname, admrdept) VALUES ('NEW', v_dept...
If there are large discrepancies between the values contained in the OPTIMIZERINFORMATION and TABLESTATISTICS, the update statistics statement should be performed for this table. If the system discovers during a search in a table that the values determined by the last UPDATE STATISTICS statement are ...
4 If his statement does not throw light on the subject, heA can explain the subject clearlyB can hardly make himself understood concenin on the subject5 If the emperor was very cruel to his people, he___A treated his people kindlyB...