- Read every row in the table
- No reading of index. Reading from indexes is also expensive.
Vino vinovarkey
pdeaudney
/ query_planner.markdown
Created
May 29, 2020 15:13
— forked from hgmnz/query_planner.markdown
PostgreSQL query plan and SQL performance notes
fracasula
/ context_cancel.go
Last active
May 19, 2022 20:49
GoLang exiting from multiple go routines with context and wait group
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| package main | |
| // Here's a simple example to show how to properly terminate multiple go routines by using a context. | |
| // Thanks to the WaitGroup we'll be able to end all go routines gracefully before the main function ends. | |
| import ( | |
| "context" | |
| "fmt" | |
| "math/rand" | |
| "os" |
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| package main | |
| //#include<stdio.h> | |
| //void inC() { | |
| // printf("I am in C code now!\n"); | |
| //} | |
| import "C" | |
| import "fmt" | |
| func main() { |