Lab Sql

I would like to convert this SELECT-ENDSELECT into FOR ALL ENTRIES to have better performance. LOOP… Read more Convert Select-endselect In For All Entries With More Table

I dont really know how to put this but please kindly check the details below. Student |Student_ID|S… Read more Sql Query Fields As Columns

Please help me to create a select query which contains 10 'where' clause and the order shou… Read more Order By Maximum Condition Match

I am trying to run this query in ascending order: SELECT title,project_index FROM projectdetail … Read more Mysql Multiple Column Asc Order

I need to write SELECT statement selecting rows, where prefix of any word from some field matches g… Read more Search Matching Prefix Of Every Word In Field In Sqlite

I am not able to understand how Cartesian product works. Consider the simple schema: mysql> sele… Read more Understanding Cartesian Product In Sql

Below is my database table. id name type 1 a 1 2 a 1 3 a … Read more How To Write The Sql Query To Select And Group By Type And Count Per Type?

I have two tables with data TAB1 --------------------------------------------- | ID1 | ID2 … Read more Pivot On Joined Tables Sql Server

In a .Net web application I use the public DataRow[] Select(string filterExpression) method in man… Read more .net Framework Datatable.select(string) Method When The Filter Expression Contains ' Or "

For example, the table has columns MYINDEX and NAME. MYINDEX | NAME ================= 1 | BO… Read more Sql How To Find Rows Which Have Highest Value Of Specific Column

Not sure if it's because I'm tired, but I can't seem to figure this out... I'm loo… Read more Sql Select, Specific Rows Based On Multiple Conditions?

I have the following table and some sample records in it: id | attr1_id | attr2_id | user_i… Read more Postgresql - Select Distinct(column1, Column2) Where A Condition Holds

I have SELECT: SELECT c FROM ( SELECT 'candidate_id' as id, count('candidate_id'… Read more Get 0 Value From A Count With No Rows

this is the table id value name 1 2 first 2 2 manger 3 2 islam 4 2 … Read more Convert Rows To Columns With Some Conditions

I have 3 tables ....users, updates and bumps. I want to return the user making the api request a fe… Read more Mysql Select Subquery If Exists

I've the following query: SELECT tn.Date, b1.Name DrBook, b2.Name CrBook, c1.Name DrContro… Read more Creating Column Based On Where Condition

I have a table like this: date(timestamp) Error(integer) someOtherColumns I have a query to sel… Read more Divide Two Counts From One Select

I have 3 tables; CASES, USERS and USER_META. For this issue you need to know that the USER_META tab… Read more Oracle Select Where Value Exists Or Doesn't Exist

Suppose I have the following simple table: create table mytable ( desid bigint not null, an… Read more How Do You Count The Number Of Rows In A Table That Have The Same Value In Value In A Column?

This is my query SELECT PageVisit_ID,TargetSite_ID FROM [A].Datawarehouse.mi.ctb_PageEvent WITH (N… Read more Update With Except Statement