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[code="sql"]###############################################About native dynamic SQL## To improve the performance of dynamic SQL statements# you can also use BULK EXECUTE IMMEDIATE,# BULK F...

[code="sql"]-- THE INDICES OF OPTION-- As stated previously, the INDICES OF option enables you to loop through a sparse collection.-- Recall that such a collection may be a nested table or an ...

查找数据库中所有字段 以对应的表select C.column_name,C.TABLE_NAME from dba_tab_columns C where owner=''查每个科目class 分数scro前三名select id, name, class, scro from (select row_number() over(partition by class o...

[code="sql"]------example 1: loops with IF statement-----------set serveroutput ondeclare v_counter binary_integer := 0; begin loop --increment loop counter by one ...

[code="sql"]--PL/SQL supports three kinds of records: table-based, cursor-based,and programmer-defined./** A table-based record is one whose structure is drawn from the list of columns in the...