# mysql

MySQL (/ˌmaɪˌɛsˌkjuːˈɛl/) is an open-source relational database management system (RDBMS).
 Its name is a combination of "My", the name of co-founder Michael Widenius's daughter My,
 and "SQL", the acronym for Structured Query Language. A relational database organizes data 
 into one or more data tables in which data may be related to each other; these relations 
 help structure the data. SQL is a language that programmers use to create, modify and extract
 data from the relational database, as well as control user access to the database. In 
 addition to relational databases and SQL, an RDBMS like MySQL works with an operating system 
 to implement a relational database in a computer's storage system, manages users, allows 
 for network access and facilitates testing database integrity and creation of backups.

+ [close_ssh](mysql/close_ssh.1) Close the ssh proxy connection
+ [open](mysql/open.1) open a mysql connection, construct a database model
+ [dump_inserts](mysql/dump_inserts.1) dump the inserts transaction mysql file
+ [create_filedump](mysql/create_filedump.1) 
+ [write_dumps](mysql/write_dumps.1) 
+ [table](mysql/table.1) Create a table reference
+ [group_by](mysql/group_by.1) 
+ [left_join](mysql/left_join.1) mysql left join
+ [on](mysql/on.1) on join condition test for left join operation
+ [get_last_sql](mysql/get_last_sql.1) get the last mysql query that execute
+ [add](mysql/add.1) make insert into of a new record into database
+ [save](mysql/save.1) make update of the database record
+ [count](mysql/count.1) 
+ [where](mysql/where.1) 
+ [order_by](mysql/order_by.1) 
+ [project](mysql/project.1) make project of a single column
+ [check](mysql/check.1) check of the target record is existsed inside the database or not?
+ [find](mysql/find.1) 
+ [exec](mysql/exec.1) exec sql and fetch result data as dataframe
+ [select](mysql/select.1) make data pull from database
+ [limit](mysql/limit.1) 
+ [performance_counter](mysql/performance_counter.1) run the mysql performance counter in a given timespan perioid.
