DO NOT USE this for questions targeting Microsoft SQL Server, use the tag sql-server instead. "SQL" is an acronym for "Structured Query Language", it is used in relational database management systems (RDBMS) to query, update, delete, and insert data as well as modify the structure of the database. ...

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10 views

Query table with the same name on different schemas in PostgreSQL [duplicate]

I want to query table with the same name (for instances "walls") in multiple schemas on a PostgreSQL database. Is it possible? I am searching for something like this: select * from *.walls; I need ...
0
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0answers
36 views

How to list all tables associated with specific foreign key?

I have this Postgresql query: select (select r.relname from pg_class r where r.oid = c.conrelid) as table, (select r.relkind from pg_class r where r.oid = c.conrelid) as type, (select ...
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1answer
48 views

Check for duplicates in column and determine which row to keep

I've found myself running in to this on multiple occasions now where I got a query and would need too further refine it. Where one column might contain duplicates and I need to evaluate which row to ...
0
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4answers
40 views

The multi-part identifier > “a.surveyid” could not be bound [closed]

I am getting the error : Msg 4104, Level 16, State 1, Line 1 The multi-part identifier "a.surveyid" could not be bound. Below is the query ,what could be the issue? SELECT a.surveyid,* ...
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0answers
23 views

postgresql view all tables with specific FK

I have a table of suppliers with supplierID (PK) and supplierName in Schema X I want to find out all tables names in all Schemas where the supplierID is FK there. How can i write a query that does ...
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3answers
172 views

Select using values from another table

I want to select specific columns from a table, let's say table A. Table B has the names of the names of the columns I would like to select. How would I write a MSSQL query that will use the distinct ...
1
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2answers
35 views

RIGHT() function returning blank result

I have a single column that contains information that I need to have split up into three separate columns. I currently have a SELECT statement that works partially, but my ChangeTo column is not ...
0
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1answer
50 views

Filtering SQL Search Query

How can I filter results in a SQL query? Let’s say I have Products A-Z, and each product has a monthly observation for X Months, but for most products the value in the observation stays the same for ...
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0answers
18 views

postgresql how can i get list of trigger which are fired when function X is working?

my goal is to list all trigger names which are working when function X is working. i assumed it has something to do with pg_proc and pg_constraints but i couldn't figure it out.
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1answer
22 views

postgresql double count query

I have a table with 3 columns: key, status and rank. status contains numbers and rank contains t or f. key is auto numbered and irrelevant here. my goal is to count how many in each status are t and ...
1
vote
1answer
33 views

Returning case-sensitive input of case-insensitive array match

Taking a JSON table with some simple data: CREATE TABLE jsonthings(d JSONB NOT NULL); INSERT INTO jsonthings(d) VALUES('{"id":1,"email":"Test1@test.com"}'); INSERT INTO jsonthings(d) ...
0
votes
2answers
41 views

How to access row value from UPDATE sub query function?

I would need to use UPDATE like this: update offer set (bank, bank_id) = (cost, gid) from ( select cost, osm_points.gid from pgr_kdijkstraCost( 'SELECT gid as id, source, target, walk_cost as cost ...
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3answers
50 views

Concat the Rows of Column B with Respect to Column A [closed]

I want to Concat the Rows of Column B with Respect to Column A Input
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1answer
46 views

Query for sub-array in multi-dimentional array

How do I fix the following sql query: DROP TABLE IF EXISTS array_test; CREATE TABLE array_test ( id serial primary key, name text, array_column integer[][] ); insert into array_test (name, ...
0
votes
1answer
45 views

improve long running query

I have this query INSERT INTO interactions( user_id, external_object_id, origin, interaction_type, interaction_sub_type, published_at, origin_id, created_at, updated_at) SELECT ...
0
votes
1answer
56 views

Some records are missing while selecting from table

I am trying to match the records having MAX(WORKITEM_ID) but some PROCESS_INSTANCE_ID are not coming though they are present in WORKITEM table. select WI.WORKITEM_ID as WORKITEMID, ...
0
votes
1answer
44 views

Entity ID field that can refer to multiple tables?

In designing both audit tables and notification tables, I've run into an issue where I need a row to refer to an entity in another table, but which table that entity is isn't always the same. For ...
1
vote
1answer
50 views

Selecting where nullable boolean is not true

I have made the following code for select a record that isn,t true. SELECT * FROM Table WHERE Bool != 'true' OR Bool IS NULL; Why is the check Bool != 'true' not enough for a nullable boolean? The ...
1
vote
2answers
54 views

How can I Insert when not in table and when max timestamp T-SQL

I am trying to insert rows from one table to another that are not in the one I am moving them to. I also want to only move the ones that have the highest datestamp. (I want to only insert rows that ...
7
votes
5answers
2k views

SELECT DISTINCT on multiple columns

Supposing we have a table with four columns (a,b,c,d) of the same data type. Is it possible to select all distinct values within the data in the columns and return them as a single column or do I ...
0
votes
1answer
42 views

how to use a specific column for a day

CREATE TABLE `csptargets` ( `id` int(11) NOT NULL AUTO_INCREMENT, `start_date` datetime NOT NULL, `end_date` datetime NOT NULL, `cspcode` varchar(11) NOT NULL, `vol`decimal(20,3) NOT NULL ...
1
vote
1answer
73 views

Optimizing a query that performs worse on a smaller dataset

I am trying to run this query. The * is just for simplification, I'm selecting ~10 specific fields for some calculations. SELECT * FROM `orders` LEFT JOIN `orders_processed` ON ...
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0answers
53 views

Why is there a difference in CSV Export Results of Oracle SQL Developer and SQL Plus Spool

When I export data from SQL Developer GUI, setting format: csv, left enclosure: ", right enclosure: ", and Encoding: UTF8, I get data exactly the way that I need it for processing in Python. ...
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1answer
36 views

Script works but Im not sure this is the best format

I have a survey table which contains mostly integer. I want to make it readable for end user so I use select statement as below: SELECT CASE s.Country WHEN 1 THEN 'One' WHEN 2 THEN 'Two' ...
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2answers
92 views

Using Like with variables?

I have an odd situation where I have a column called (TransmittalNumber) with datatype of VarChar (75) in a table named (Transmittal Sheet). I want to query this table to find the transmittal numbers ...
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0answers
12 views

When to use tags vs binary fields in a constituent management system?

I have a table of Constituents and I want to track yes or no qualities like: are they a teacher? are they an elected official? are they philanthropists? There will be less than a dozen of these ...
1
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2answers
27 views

Troubleshooting high disk read - buffer cache query

I have a table tbl_Table1 that is about 5 GB in size and has millions of rows. It has these columns: ID, ContractID, Person, Address1, Address2, and many more. One clustered index on the PK, ID. I ...
0
votes
1answer
44 views

Is it possible to select distinct values in a json document using PostgreSQL?

I have a column that is using the JSON type. I would like to perform a query to select all distinct records for a particular field in the JSON string: I.e. given these three documents { id: 1, s: ...
0
votes
1answer
36 views

mysql Quiz leaderboard filter by points, time taken

I have a quiz report table which shows a report for every quiz a user takes. I need to create a leaderboard from this, which shows the top users best score, filtering by points and then time taken. ...
3
votes
2answers
556 views

Is there a way to calculate yesterday / today of last month / year in SQL?

Is there a way to calculate today (and yesterday) of last month (and last year) in SQL? Assuming today is 26-May-2015 then how to find? Today of last year i.e. 26-May-2014? Today of last month i.e. ...
5
votes
1answer
70 views

Warning for missing statistics in execution plan

I have a situation that I cant understand. My SQL SERVER execution plan tells me that I have missing statistics on the table, but the statistics is already created. Please see the screens. But if ...
9
votes
1answer
503 views

Why is SELECT * much faster than selecting all columns (in a different column order) by name?

On a table with columns a,b,c,d,e,f,g,h,i,j,k I get: select * from misty order by a limit 25; Time: 302.068 ms And: select c,b,j,k,a,d,i,g,f,e,h from misty order by a limit 25; Time: 1258.451 ms ...
3
votes
1answer
82 views

How to check foreign keys related to a table

How to see foreign keys related to a table in MySql? Background : I wanted to drop a table in MySql which has a foreign key constraint. When I do it I get this: Error Code: 1217. Cannot delete or ...
3
votes
1answer
72 views

How is encoding done in SQL database tables for pattern matching?

Are strings in table columns represented as bit patterns or Unicode? Does the database engine bring them into memory in a different representation character set from the disk-persisted ...
0
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0answers
23 views

For any SQL query, do there exists a unique translation into relation algebra

I have been studying databases and I understand that for each query that a database user type, the DBMS translate them into relational algebra operations before applying them to the database. My worry ...
2
votes
1answer
44 views

Query to flatten schema

I have the following tables and columns: Users id | other-non-important-columns Containers id | Users_id | other-non-important-columns Content id | Container_id | other-non-important-columns ...
1
vote
1answer
61 views

Find all tables that are related to a view recursively sql server

I have a view-A that is comprised of other views (View-B View-C) and I would like to list all the tables that used by View-A (which would include the tables used in View-B and View-C). When I use ...
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votes
0answers
30 views

Need some help building a query to get info from several tables

I have this semi-complex table structure: And I need to return this data: { "id": "10111001", "rep_id": "30000001", "targets_id": "60011001", "brands_id": "10010001", "brand_name": ...
1
vote
1answer
56 views

How to get row count from all tables of a schema ( without using information schema )

The query should collect data from table name , schema name from information.schema and row count should be taken from actual table.
0
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1answer
58 views

Arithmetic operations on a table

can anyone give me some advice on the following situation: I have two basic tables: Then a view created by the two: select product.IDPRODUCT, sum(quantity) as totalOut, PRODUCTSTORAGE.DATAINPUT, ...
2
votes
3answers
72 views

SQL actually executed as planned in ORACLE?

I wonder if SQL is definitely executed as execution plan. I mean.. is the actual SQL execution process always consistent with execution plan, i.e. does the same SQL always give the same plan?
2
votes
1answer
37 views

Dividing values from a single column into 2 based on a rule

I am trying to create an SQL query to divide into 2 separate columns based on a rule. My table is as follows Name | Item ID | Parent ID ----- | -------- | ---------- A | 1 | Null B ...
0
votes
1answer
40 views

How to insert UNIQUE IDs values from several tables into events table

I have a table called events defined as follow: rep_id, hcp_id, brand_id, email_id and content_id is the IDs in other tables. event_type should be kind of array containing this values: [ ...
0
votes
1answer
21 views

Function for generate a huge and possible random relationship between tables

I have this two tables and N:M relationship between them: Let's said I am managed to create a lot of media and emails records but I need to create the relationship between them. I can do this ...
1
vote
1answer
147 views

Selecting rows from same name table from multiple databases in single result set

For some reason, I have a table Table_1 in n databases (same name and schema structure) instead of one single databases. The columns are like this: | Column_1 | Column_2 | I can select data from ...
1
vote
0answers
52 views

SQL 2008 R2 Agent stopping sp_who2 running and can't view database or Agent properties

We're experiencing an unusual issue with SQL 2008 R2 SP2 (10.50.4297) where the SQL Agent had stopped but would not restart (this has been fine for months). After investigating the issue we had to ...
0
votes
2answers
33 views

Insert data into table where 4 fields are the same and the fifth changes

I have a table with this structure: username varchar(35) startdate datetime enddate datetime saledate datetime packageid int for each username there are 5 packages, so one username has 5 records ...
2
votes
2answers
128 views

Slow Performance caused by Correlated Sub-queries & Clustered Index Seek

I'm running a query in which one of the tables (FIELDDATA) has nearly 400,000 records which is taking more than 2 minutes to execute. I ran the execution plan, and noticed that the clustered seek ...
0
votes
1answer
38 views

Usage of ExecSQL in UDF?

Problem: is it possible to use sp_executesql or EXEC inside of a user defined function? Thanks!
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0answers
32 views

How to connect to a |Database from SQL Script, in SQL developer

Hi i am trying to connect to a DB using a connection string mentioned in a Script file.. in SQL developer. I am using the below format Connect USERNAME/PASSWORD@HOSTNAME:PORT/Service_name.. But its ...