Neo4j

:play start 

:server status

 create( n:person (name : "Kabir" ) ) return n 

match (n) - [r] -> (m) return n,r, m  LIMIT 1

match ( n:person ) return n 

call apoc.load.json('file:/Users/Public/neoq.json') yield value return value limit 10

Elastic search

 Inverted index.  

Leaf query 

Compound query 

Inverted Database 

SQL vs DSL 

Table vs Index 

Document vs row 

Leaf query clause match_all 

Dev tools 

Term query 

git error pathspec did not match

 

git remote update

git fetch

Fatal error compiling: invalid target release: 11

 Install java 11

cannot find package "github.com/go-sql-driver/mysql"

Golang Error : cannot find package "github.com/go-sql-driver/mysql" in any of: /home/opc/work/go/src/github.com/go-sql-driver/mysql (from $GOROOT) /home/opc/golang/src/github.com/go-sql-driver/mysql (from $GOPATH) Solution : go get -u github.com/go-sql-driver/mysql