DECLAREv_count NUMBER;BEGINSELECTCOUNT(*)INTOv_countFROMemployees;DBMS_OUTPUT.PUT_LINE('Number of rows in employees table: '||v_count);END; 在这个例子中,我们首先声明了一个名为v_count的变量,然后使用SELECT COUNT(*)语句将表中的行数存储到该变量中。最后,我们使用DBMS_OUTPUT.PUT_LINE函数输出结果...
SQLRowCount() returns the number of rows in a table affected by an UPDATE, INSERT, MERGE, SELECT from INSERT, or DELETE statement processed against the table, or a view based on the table.
FOR emp_rec IN SELECT id, salaryFROMemployees WHERE dept = 'IT' LOOP UPDATE employees SET salary = salary *1.1WHERE CURRENT OF emp_rec; -- 使用游标当前记录 END LOOP; END; $$; -- 调用存储过程 CALL batch_update_salary(); 动态SQL循环 DO $$ DECLARE sql_query TEXT; table_name TEXT :...
SELECTt2.name,t1.TABLE_ID,t1.LTYPE,t1.BLOCKED,t1.LMODE,t1.TRX_ID,t1.addr,t1.ROW_IDX,t2.SCHIDFROMV$LOCK t1,sysobjects t2wheret1.table_id=t2.idandt2.namein('UF_SRCBTZ_DT1','UF_SRCBTZ'); 查询发现表 UF_SRCBTZ_DT1,UF_SRCBTZ 相关 IX 锁一直存在。再根据相关 TRX_ID 查询对应的...
SQL_MAX_TABLE_NAME_LEN SQL_MAX_TABLES_IN_SELECT SQL_MAX_USER_NAME_LEN 标量函数信息 InfoType 参数的以下值返回有关数据源和驱动程序支持的标量函数的信息。 有关标量函数的详细信息,请参阅 附录E:标量函数。 SQL_CONVERT_FUNCTIONS SQL_NUMERIC_FUNCTIONS SQL_STRING_FUNCTIONS SQL_SYSTEM_FUNCTIONS SQL_TIMEDA...
The solution to getting all entries was to wrap string_field in COALESCE, which converts NULL to an empty string. 代码语言:javascript 代码运行次数:0 运行 AI代码解释 SELECTCOUNT(*)AScFROMtable1ASt1JOINtable2ASt2ONCOALESCE(t1.string_field,'')=COALESCE(t2.string_field,'') ...
System.out.println(tableResult.getJobClient().get().getJobStatus()); 维表流更新了几次数据后,结果表count_info中数据错乱 3.2 mysql表作为维表 tableEnv.executeSql("CREATE TEMPORARY TABLE mysql_source ("+" id STRING,"+" name STRING,"+" update_time TIMESTAMP(3),"+" PRIMARY KEY (id) NOT...
COUNT(*)counts the total number of rows in the table: SELECTCOUNT(*)ascount_pet FROMpet; Here’s the result: count_pet 5 Instead of passing in the asterisk as the argument, you can use the name of a specific column: SELECTCOUNT(id)ascount_pet ...
Checking Page Count Let’s check to see how many pages make up this table. Use the DMV,sys.dm_db_partition_stats, to get an accurate count of rows and pages: SELECT OBJECT_NAME(s.object_id) AS [TableName], s.row_count AS [RowCount], ...
Db.Storageable(list2).ExecuteCommand(); Db.Storageable(list2).PageSize(1000).ExecuteCommand(); Db.Storageable(list2).PageSize(1000,exrows=> { }).ExecuteCommand(); Feature9 : Auto split table Split entity [SplitTable(SplitType.Year)]//Table by year (the table supports year, quarter,...