A core SQL statement, SELECT retrieves data from one or more tables or other sources of row set data such as views or table-valued functions.

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Order result by number of occurence of a word in a text

I am working with sqlite3/python . I would like to order results by the number of occurence of %@% in text. For exemple Jimmy 10 // Jimmy wrote 10 strings like %@% James 2 Sophia 0 ..etc The ...
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215 views

How to UPDATE MAX and MIN of a GROUP BY?

I have a SELECT query of a table with GROUP BY id col1 category 1 some 1 2 x 1 3 another 1 4 x 2 // should be removed 5 some 2 6 x ...
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329 views

Update , Select and Join using 3 tables

There are 3 tables: Label (Label_ID,Label_Name), Label_ID is Primary Key. Tracks (Prefix, Label_ID), Prefix is Primary Key,Label_ID is empty column Top100 (Prefix,Label) No keys in this table. My ...
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how to grant select access my sql server

when I exec the syntax to gain the access I get an error that I cant grant permissions to my self. any Ideas please!
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614 views

How to avoid duplicate entries with SELECT statement?

+----+----------------------+---------+---------+---------------------+-------+ | id | translation | id_word | id_user | added | tuser | ...
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53 views

Select all from table using procedure oracle

I am trying to execute the select command in a procedure.Initially i retrived all of the columns of the table in the procedure using cursor. The real problem comes when I am trying to access the ...
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31 views

Unexpected SELECT permissions

My user WebApp seems to have SELECT permissions on every table in every schema and I can't figure out why. WebApp is only in the Public role. Public doesn't own any schema. Explicit permissions ...
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34 views

Group-by in an Oracle database

on an Oracle database. If I make an: select id,id_operator,denumire,cod_fiscal,loc_den,str from rap where is_punct_lucru=1 and id_operator in ( select id_operator from rap where ...
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32 views

Select sub columns from a view

I have a large view in Sql Server named ViewA which looks like Select ColumnA, ColumnB, ... ColumnZ FROM TableA Join TableB ON ... Join TableZ ON This view gives me exactly what I need in ...
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36 views

SELECT w/ INNER JOIN Query on Optional Columns

I have five tables: File2, Branches_of_Study, Schools, Education_Establishments, and Certificates. File2 is the transaction table with all the other tables as reference tables. File2 is all about the ...
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2answers
40 views

Which query performs better when searching a row where a column has maximum?

Consider a simple table for example purposes: person(name varchar, age int) I have a task to retrieve the oldest person. Which query is better in general for such problems? Query 1: criteria with ...
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99 views

DB2 - REPLACE INTO SELECT from table

Is there a way in db2 where I can replace the entire table with just selected rows from the same table ? Something like REPLACE into tableName select * from tableName where col1='a'; (I can export ...
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68 views

How do I perform a query on a dynamic list of tables?

I have a database named as ( conntrack ) with unknown amount of tables.I have a static table "tabidx" which has one column "date". The following table is static and its name is tabidx which provide ...
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13 views

Numeric cell with 0 not null

I have the following query (in a Oracle Database): SELECT SUM (CANTITATE) FROM ANEXA2A_TABEL2_ROWS WHERE TIP_ACTIUNE = 'COLECTATE' AND TIP_AMB = ...
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2answers
37 views

Why does “DELETE WHERE (VARCHAR)=0” execute successfully?

DELETE FROM stats WHERE name=0 "name" is type VARCHAR(64). The above resulted in all records in the table being deleted, instead of just the 10~ that should have been affected. Only that many were ...
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145 views

I want to rewrite my MySQL query so that FIND_IN_SET doesn't do a full table scan unless necessary

I want to rewrite my MySQL query so that the last table join doesn't do a full table scan unless necessary. Here's what I mean. Under certain conditions I don't need to select any rows in that join ...
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47 views

on every row on SELECT Query must lookup to other table

I'm working on Login/Logout System and I'm facing this problem regarding on SELECT Query. I have 2 tables namely dtr_tbl and shift_tbl. In dtr_tbl are the logs of the user(login/logout time details) ...
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74 views

CONCURRENT SELECT's SLOW … LOCK IN SHARE MODE

My Table has 25 Million rows total and 6 million rows satisfying below where clause. Select 1: select max(stamp) from Table where type = "string" LOCK IN SHARE MODE ; 6000+ seconds Select 2: ...
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28 views

Padding MySQL queries

I'm trying to retrieve logs of our plant where a certain event has occurred. At the moment, I can query the actual event by using an alarm_code field. However, I'd also like to include about an ...
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59 views

MySQL: What exact commands does each privilege level allow?

I am configuring some new logins for users who have already been using the relevant MySQL servers under other logins. I would like to limit their privileges to the minimum each user needs, based on ...
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44 views

What is the difference between normal Select query and a Select query inside Common Table Expression(CTE)? [duplicate]

I'm having a table 'Products' and if Execute this query SELECT TOP 1000 [ProductID] ,[ProductDesc] ,[ManufacturingDate] ,[ExpiryDate] ,[Price] FROM ...
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1answer
60 views

Slow query while selecting a higher offset from millions of rows

I have sort of security log files containing millions of rows. On my current testing I imported the data for one month which is the sum of ~14,000,000 records. The table contains several set of fields ...
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34 views

How to fetch data on a single column from a table having composite key [duplicate]

I am working on a messaging application, where the users can have a group conversation with multiple recipients. So in my database, I have a table called user_message where user_id and message_id is ...
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118 views

SELECT from Function that return CURSOR

I would like to select from a function that return a SYS_REFCURSOR Type value. for example : CREATE OR REPLACE FUNCTION my_funtion ( my_param IN VARCHAR2) RETURN SYS_REFCURSOR IS ...
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214 views

How to get result count from mysql inner join

I have a mysql query something like this. SELECT SQL_CALC_FOUND_ROWS wp_posts . * , wp_geodir_gd_place_detail . * FROM wp_posts INNER JOIN wp_geodir_gd_place_detail ON ( ...
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Use join to aggregate data from various normalized tables

I have a database as follows: tbl_clients (Primary Key: client_id, Foreign Keys:place_id,district_id,zone_id,country_id) tbl_places (Primary Key: place_id) tbl_districts (Primary key: district_id) ...
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23 views

Need help on transferring data from a PostgreSQL database to a future (to be decided) database!

(English isn't my native language) I'm doing an internship for school and my task is to theoretically describe the best way to transfer the data from their current database (PostgreSQL) that they have ...
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217 views

Update does not working while select returns right results

I am trying to execute the query below: UPDATE( SELECT Ord.Completed FROM Product P INNER JOIN Order1 Ord ON Ord.OrderID = P.OrderID WHERE EXISTS( SELECT * FROM Delivery ...
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1answer
24 views

How to modify the below script to take tables and its sizes for a particular databse to send via mail to a recipient?

SELECT top 10 t.NAME AS TableName, (SUM(a.total_pages) * 8)/1024.0/1024.0 AS TotalSpaceGB FROM sys.tables t INNER JOIN sys.indexes i ON t.OBJECT_ID = i.object_id INNER JOIN ...
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2answers
212 views

How to find all schemas where a table has records?

In my Oracle database, I have a number of schemas (users/owners) with similar table structures (about 100 in total). However, some tables are empty in a lot of schemas. Is there a way to find out for ...
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1answer
46 views

select statement for subtype

Okay, so all I'm trying to do here is list the managers who supervised the employee that charged a customer $100 for a rental on November 1st, 1998. My issue is that I don't know how to select the ...
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35 views

Get all the users that are managed by a targeted manager

I have the following model: Table user: (id, name, direct_manager_id) Table customer: (id, name, managed_by_id) i.e. users can have another user as their direct manager, Customers can be managed ...
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61 views

Need help in incrementing the date in oracle

Error thrown as "Invalid number" while trying to increment the date. Given below is the query executed through sqlplus. Please help me on this. select ''''||to_date(:To_date, 'dd-mon-yyyy')+1||'''' ...
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91 views

using update query with subquery in Oracle sql

I have an update query where I am trying to update a field but for more than one record, I am trying a join but it doesn't work. Below I get multiple values that come back from the select statement ...
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1answer
48 views

How not to display column name during select query

I have a sql file which prints the count(*) of some tables and result of it is something like this. COUNT(*) ---------- 10443 COUNT(*) ---------- 497 COUNT(*) ---------- ...
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34 views

SSRS using select from (Select)

I want to report a script which contains a Select from (Select), when I just run the second select I have no problem but when I put the whole script it loads and nothing happens. Here's my code : ...
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234 views

Copy Data To Different Server using SELECT * INTO?

I'm not a DBA by any means. I'm just knowledgeable enough with the MySQL command line to be capable half the time and dangerous the rest. Today I was working on exporting data from a one DB into ...
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39 views

mysql:Multi tables SELECT Query

I have 2 tables in my database table_names, with the fields: id, name, join_date, country table_sigs, with the fields: id, pet_title, act_date, member_id I would like to know how many members ...
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68 views

Query execution involving two servers in SQL server , is really slow

I am running the following query , and it takes over 1 hour to finish execution. As there are so many joins and then one union is involved, is it normal for this query to be executed in 1 hour, or is ...
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1answer
55 views

Query to select distinct name based on several factors

I have a table with the following data (simplified here): ID | PolicyName | Setting | State | Value 1 Default DiskUsage Enabled 1 2 Default Memory Enabled 1 3 Default CPU Enabled 0 4 Personal ...
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44 views

SQL JOIN excluding duplicate

I'm using PostgreSQL under ubuntu 14.04. I have two tables as below: create table material_base_name ( id bigserial, base_name varchar(50), constraint pk_materials_base_name primary key (id) ); ...
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127 views

SQL Server sometimes uses a lot more cpu for query

I have a stored procedure with a quite heavy SELECT statement that includes five joins and uses FieldName LIKE '%searchterm%' on multiple columns. This query usually finishes in about 2-5 seconds. But ...
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159 views

How to union tables into a new table in mysql? [closed]

I have a table as following: id col1 col2 col3 type 1 12 12 23 1 2 23 33 1 0 3 333 2 21 1 ..... I try to select 1% sample of where type=1 and all the data where type=0, I ...
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1answer
37 views

how to optimize grouped select from an already grouped select query

I already had a specific query to get a number of shops, but I couldn't sum the cost field, I kept on getting an error on the sum function, but it worked when I did this; select tab.shop_id, ...
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70 views

Text comparison select query needed that finds most whole word matches within larger string

I have a database of products, many with similar names. For example... iPhone 5s (GSM model) A1533 iPhone 5s (GSM model China) A1518 iPhone 5s (GSM model China) A1530 iPhone 5c (GSM model) ...
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239 views

SQL SELECT - adding field to SELECT with JOIN is changing the results

I have a SQL sentence with JOIN, running on mysql 5.5.16: SELECT DISTINCT (ot.orders_id), ot.value FROM orders_status_history osh INNER JOIN orders_total ot ON ( osh.orders_id = ot.orders_id ) WHERE ...
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61 views

Select and sum from related columns

I have table with the following columns: date (month), hours/days (31) and daily tasks (31) Columns: date day1 day2 day3....task1 task2 task3.... Records: june 4 6 2 .... run walk ...
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31 views

SQL Get result as a column

Is it possible to get a result as a column? The SELECT query will only need to return one record, however, at the time of querying the database it will not know what attributes are in the table, and ...
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9 views

Improving the performance of this select query [duplicate]

i have two tables TABLE 1 and TABLE 2 And i am running this select query to fetch the data , it takes long time to run SELECT TABLE1.* , TABLE2.COL1 , TABLE2.COL4 FROM TABLE1, TABLE2 WHERE ...
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1answer
42 views

How to get desired type of records for desired number of times in oracle

I want to get get 6 "double_scoring" records and 4 "singe_scoring" records from my Profiles table based on SCORING_RULE column values. Can you please let me know how can I do this with SELECT query ...