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View's SELECT contains a subquery in the FROM clause

... As per documentation: MySQL Docs The SELECT statement cannot contain a subquery in the FROM clause. Your workaround would be to create a view for each of your subqueries. Then access those views from within your view view_credit_status ...
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Extracting specific columns from a data frame

...r package, if your data.frame is called df1: library(dplyr) df1 %>% select(A, B, E) This can also be written without the %>% pipe as: select(df1, A, B, E) share | improve this answer ...
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Can I have multiple Xcode versions installed?

... explicitly specify it at install time. Also, you will generally want to unselect all features besides the xcode core tools, because the others don't let you change the install directory. – Paul Du Bois Jul 3 '11 at 3:30 ...
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Fastest way to count exact number of rows in a very large table?

I have come across articles that state that SELECT COUNT(*) FROM TABLE_NAME will be slow when the table has lots of rows and lots of columns. ...
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Postgres DB Size Command

..."pg_datbase" system table. Just apply the function to the names, as below. select t1.datname AS db_name, pg_size_pretty(pg_database_size(t1.datname)) as db_size from pg_database t1 order by pg_database_size(t1.datname) desc; If you intend the output to be consumed by a machine instead of a...
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Displaying the Indian currency symbol on a website

...e and pastes it somewhere else, he will see Rs and not some other or blank character. You can now also use the new Rupee unicode symbol — U+20B9 INDIAN RUPEE SIGN. It can be used in this manner: <span class="WebRupee">₹</span> 500 Just include the following script and it...
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Convert Unix timestamp into human readable date using MySQL

... Use FROM_UNIXTIME(): SELECT FROM_UNIXTIME(timestamp) FROM your_table; See also: MySQL documentation on FROM_UNIXTIME(). share | improve...
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How can I get enum possible values in a MySQL database?

... This solution works on codeigniter github.com/thiswolf/codeigniter-enum-select-boxes – You Know Nothing Jon Snow Jul 7 '13 at 16:28 3 ...
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OR is not supported with CASE Statement in SQL Server

...sions anywhere in the SQL queries. CASE expressions can be used within the SELECT statement, WHERE clauses, Order by clause, HAVING clauses, Insert, UPDATE and DELETE statements. A CASE expression has the following two formats: Simple CASE expression CASE expression WHEN expression1 THEN Result1...
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Get size of all tables in database

... SELECT t.NAME AS TableName, s.Name AS SchemaName, p.rows, SUM(a.total_pages) * 8 AS TotalSpaceKB, CAST(ROUND(((SUM(a.total_pages) * 8) / 1024.00), 2) AS NUMERIC(36, 2)) AS TotalSpaceMB, SUM(a.used_pa...