JOIN dbSecurity.dbo.AccountInstSecurityRole s ON s.InstitutionID = CASE WHEN (RecordCount) <= 1 THEN v.ParentInstitutionID ELSE v.InstitutionID END Here is the full example USE dbTechnikons -- Gets all the child records for the intitution SELECT v.InstitutionID, v.Name, v.HierarchyLevelID...
Note: Oracle internally creates unique index to prevent duplication in the column values.Indexes would be discussed later in PL/SQL.CREATE TABLE TEST ( ... , NAME VARCHAR2(20) CONSTRAINT TEST_NAME_UK UNIQUE, ... );In case of composite unique key,it must be defined at table level as ...
If we include the Where clause with the SQL Where Case in it, then we get 290 rows returned: This still might not look like something useful right off the bat, but you’ll most likely come across a situation where you must make a decision in the SQL Where Case. Well, the SQL Case...
, IN v_str varchar(30) ) BEGIN CASE n_str WHEN n_str = 'profileStatus' THEN UPDATE tbl_contact SET status = 'A' WHERE id = id; -- The above statement updates the entire table instead of the right row WHEN n_str = 'phoneNumberMobile' THEN ...
问IN子句中的Using CASE语句EN这是我一直试图正确编译的内容的简化版本：条件语句中的else 什么是else ...
It is important your loop has an end condition. In our case we make sure that variable @n is incremented, and that it will eventually be greater than 52. We use the value @n to “drive” the date value. By adding weeks to our base date, @firstWeek, we can calculate subsequent begi...
A SQL script is a set of SQL commands saved as a file in SQL Scripts. A SQL script can contain one or more SQL statements or PL/SQL blocks. You can use SQL Scripts to create, edit, view, run, and delete script files. When using SQL Scripts, remember the following: ...
CASE expression CAST expression 1.1.2.1 Running SQL-92 on Oracle Lite As mentioned in the preceding section, Oracle Database Lite uses Oracle SQL by default. However, if you want to support SQL-92 by default instead of Oracle SQL, you can change the SQL compatibility parameter in the ...
selectdept.name,count(teacher.name) from teacher right join dept onteacher.dept=dept.idGROUP BYdept.name; Using CASE 9.Use CASE to show the name of each teacher followed by 'Sci' if the teacher is in dept 1 or 2 and 'Art' otherwise. 请使用CASE显示每个教师的姓名,如果教师在部门1或2中...
, IN v_str varchar(30) ) BEGIN CASE n_str WHEN n_str = 'profileStatus' THEN UPDATE tbl_contact SET status = 'A' WHERE id = id; -- The above statement updates the entire table instead of the right row WHEN n_str = 'phoneNumberMobile' THEN ...