r - Mutate multiple columns in a dataframe - Stack Overflow
0.029 Bank E 5 1881 32000000 351266 314012 NA 0.0109 0.009 NA. Here is the code to replicate the data.
r - Mutate multiple columns in a dataframe - Stack Overflow
Meta-comments: When translating from one language to another, you need not be too literal. Loops in Stata often work better as array-based
sql - Select * from subquery - Stack Overflow
I'd like to get sum of column1, sum of column2 and total sum. In Postgres I can do it this way: (notice the star) … But in Oracle I get an syntax error and have to use this: …
mysql - Select data from INFORMATION_SCHEMA... - Stack Overflow
Probably an easy question.. I've got a list of tables from INFORMATION_SCHEMA and I want to do queries (select, delete etc) on the data within these tables: I tried … But of course it does not work..
sql - select the sum of every client's last order - Stack Overflow
My data is as follows: … What I want is to specify an initial date, for example, '2010-07-27', to filter only records at or after this date in the WHERE clause; the query should get the latest order from client 50...
SQL Injection Cheat Sheet: MySQL | xl7dev | Select Nth Row
SELECT table_schema, table_name FROM information_schema.columns WHERE column_name = 'columnname';#find table which have a column called 'columnname' and 0<(select count(xxx) from tbl_user) and 1<2 ＃盲注爆字段.
Great Flood of 1881 - Wikipedia
The Great Flood of 1881 refers to flooding events along the Missouri River during the spring of 1881. The flood began around Pierre, South Dakota and struck areas down river in Yankton, South Dakota, Omaha, Nebraska, Council Bluffs, Iowa, Nebraska City, Nebraska, Kansas City...
unknown item from 1881 ? | Forum
Straw/hay from who knows when covered the floor and the mine field of groundhog holes. But I found this kicking around the debris on the floor. Any help identifying and dating this would be great.
CGR 0-4-0ST 1881 - Wikipedia
The Cape Government Railways 0-4-0ST of 1881 was a South African steam locomotive from the pre-Union era in the Cape of Good Hope. Between 1881 and 1904, thirteen 0-4-0 saddle-tank locomotives entered shunting service at the Table Bay Harbour in Cape Town.
MySQL SQL Injection Practical Cheat Sheet - Perspective Risk
1 AND (SELECT 1 FROM (SELECT COUNT(*),concat(0x3a,(SELECT column_name FROM information_schema.COLUMNS WHERE TABLE_NAME="table1" LIMIT 0,1),0x3a,FLOOR(rand(0)*2))a FROM information_schema.COLUMNS GROUP BY a LIMIT 0,1)b)