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How to change column datatype in SQL database without losing data
...:
ALTER TABLE [Employee] ALTER COLUMN [Salary] NUMERIC(22,5)
if you use MySQL; you should try this script:
ALTER TABLE [Employee] MODIFY COLUMN [Salary] NUMERIC(22,5)
if you use Oracle; you should try this script:
ALTER TABLE [Employee] MODIFY [Salary] NUMERIC(22,5)
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How Do I Get the Query Builder to Output Its Raw SQL Query as a String?
...eir values. To get the queries in their entirety you need to log them from MySQL. There's more info here: stackoverflow.com/questions/1786322/…
– Matthew
Aug 31 '14 at 20:20
41
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What is an ORM, how does it work, and how should I use one? [closed]
...most popular is relational ( you know tables, columns, pk fk etc eg Oracle MySQL, MS-SQL )
And finally the Mapping part is where you do a bridge between your objects and your tables.
In applications where you don't use a ORM framework you do this by hand. Using an ORM framework would allow you d...
How do I search for an object by its ObjectId in the mongo console?
...h multiple object Ids just like the way we implement WHERE IN condition in mysql.
– Pratswinz
Jan 13 '16 at 12:00
This...
Best way to convert text files between character sets?
...arset had indeed changed. Unfortunately, when I went to load the file into MySQL, it had a different number of columns than what it previously had before running the vim command. Wonder if it would be possible to just open the file, convert the encoding, and save/close the file while leaving all oth...
Java Embedded Databases Comparison [closed]
...re are ways around it but it's difficult; it's much easier to e.g. install MySQL.
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Working with huge files in VIM
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I had the same problem, but it was a 300GB mysql dump and I wanted to get rid of the DROP and change CREATE TABLE to CREATE TABLE IF NOT EXISTS so didn't want to run two invocations of sed. I wrote this quick Ruby script to dupe the file with those changes:
#!/usr/b...
How to disable Golang unused import error
...t:
import (
"log"
"database/sql"
_ "github.com/go-sql-driver/mysql"
)
To import a package solely for its side-effects (initialization), use
the blank identifier as explicit package name.
View more at https://golang.org/ref/spec#Import_declarations
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Formatting Phone Numbers in PHP
...om +11234567890 to 123-456-7890 so it can be compared to records in a MySQL database .
20 Answers
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App Inventor 2 拓展参考文档 · App Inventor 2 中文网
...二进制数据
【数据库】LeanDB 数据库扩展
【数据库】MySQL + php后端数据库
【数据库】MongoDB + php后端数据库
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