[del old go demo file]
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Hui Li
parent
f4900138fe
commit
17190c6e3b
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/*
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* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
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*
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* This program is free software: you can use, redistribute, and/or modify
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* it under the terms of the GNU Affero General Public License, version 3
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* or later ("AGPL"), as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package main
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import (
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"database/sql"
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"time"
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"log"
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"fmt"
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_ "github.com/taosdata/driver-go/taosSql"
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)
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func main() {
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taosDriverName := "taosSql"
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demodb := "demodb"
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demot := "demot"
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fmt.Printf("\n======== start demo test ========\n")
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// open connect to taos server
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db, err := sql.Open(taosDriverName, "root:taosdata@/tcp(127.0.0.1:0)/")
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if err != nil {
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log.Fatalf("Open database error: %s\n", err)
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}
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defer db.Close()
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drop_database(db, demodb)
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create_database(db, demodb)
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use_database(db, demodb)
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create_table(db, demot)
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insert_data(db, demot)
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select_data(db, demot)
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fmt.Printf("\n======== start stmt mode test ========\n")
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demodbStmt := "demodbStmt"
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demotStmt := "demotStmt"
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drop_database_stmt(db, demodbStmt)
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create_database_stmt(db, demodbStmt)
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use_database_stmt(db, demodbStmt)
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create_table_stmt(db, demotStmt)
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insert_data_stmt(db, demotStmt)
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select_data_stmt(db, demotStmt)
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fmt.Printf("\n======== end demo test ========\n")
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}
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func drop_database(db *sql.DB, demodb string) {
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st := time.Now().Nanosecond()
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res, err := db.Exec("drop database if exists " + demodb)
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checkErr(err, "drop database if exists " + demodb)
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affectd, err := res.RowsAffected()
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checkErr(err, "drop db, res.RowsAffected")
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et := time.Now().Nanosecond()
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fmt.Printf("drop database result:\n %d row(s) affectd (%6.6fs)\n\n", affectd, (float32(et-st))/1E9)
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}
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func create_database(db *sql.DB, demodb string) {
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st := time.Now().Nanosecond()
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// create database
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res, err := db.Exec("create database " + demodb)
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checkErr(err, "create db, db.Exec")
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affectd, err := res.RowsAffected()
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checkErr(err, "create db, res.RowsAffected")
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et := time.Now().Nanosecond()
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fmt.Printf("create database result:\n %d row(s) affectd (%6.6fs)\n\n", affectd, (float32(et-st))/1E9)
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return
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}
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func use_database(db *sql.DB, demodb string) {
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st := time.Now().Nanosecond()
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// use database
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res, err := db.Exec("use " + demodb) // notes: must no quote to db name
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checkErr(err, "use db db.Exec")
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affectd, err := res.RowsAffected()
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checkErr(err, "use db, res.RowsAffected")
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et := time.Now().Nanosecond()
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fmt.Printf("use database result:\n %d row(s) affectd (%6.6fs)\n\n", affectd, (float32(et-st))/1E9)
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}
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func create_table(db *sql.DB, demot string) {
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st := time.Now().Nanosecond()
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// create table
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res, err := db.Exec("create table " + demot + " (ts timestamp, id int, name binary(8), len tinyint, flag bool, notes binary(8), fv float, dv double)")
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checkErr(err, "create table db.Exec")
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affectd, err := res.RowsAffected()
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checkErr(err, "create table res.RowsAffected")
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et := time.Now().Nanosecond()
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fmt.Printf("create table result:\n %d row(s) affectd (%6.6fs)\n\n", affectd, (float32(et-st))/1E9)
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}
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func insert_data(db *sql.DB, demot string) {
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st := time.Now().Nanosecond()
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// insert data
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res, err := db.Exec("insert into " + demot +
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" values (now, 100, 'beijing', 10, true, 'one', 123.456, 123.456)" +
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" (now+1s, 101, 'shanghai', 11, true, 'two', 789.123, 789.123)" +
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" (now+2s, 102, 'shenzhen', 12, false, 'three', 456.789, 456.789)")
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checkErr(err, "insert data, db.Exec")
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affectd, err := res.RowsAffected()
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checkErr(err, "insert data res.RowsAffected")
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et := time.Now().Nanosecond()
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fmt.Printf("insert data result:\n %d row(s) affectd (%6.6fs)\n\n", affectd, (float32(et-st))/1E9)
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}
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func select_data(db *sql.DB, demot string) {
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st := time.Now().Nanosecond()
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rows, err := db.Query("select * from ? " , demot) // go text mode
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checkErr(err, "select db.Query")
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fmt.Printf("%10s%s%8s %5s %9s%s %s %8s%s %7s%s %8s%s %4s%s %5s%s\n", " ","ts", " ", "id"," ", "name"," ","len", " ","flag"," ", "notes", " ", "fv", " ", " ", "dv")
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var affectd int
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for rows.Next() {
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var ts string
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var name string
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var id int
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var len int8
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var flag bool
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var notes string
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var fv float32
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var dv float64
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err = rows.Scan(&ts, &id, &name, &len, &flag, ¬es, &fv, &dv)
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checkErr(err, "select rows.Scan")
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fmt.Printf("%s\t", ts)
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fmt.Printf("%d\t",id)
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fmt.Printf("%10s\t",name)
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fmt.Printf("%d\t",len)
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fmt.Printf("%t\t",flag)
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fmt.Printf("%s\t",notes)
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fmt.Printf("%06.3f\t",fv)
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fmt.Printf("%09.6f\n",dv)
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affectd++
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}
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et := time.Now().Nanosecond()
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fmt.Printf("insert data result:\n %d row(s) affectd (%6.6fs)\n\n", affectd, (float32(et-st))/1E9)
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fmt.Printf("insert data result:\n %d row(s) affectd (%6.6fs)\n\n", affectd, (float32(et-st))/1E9)
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}
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func drop_database_stmt(db *sql.DB,demodb string) {
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st := time.Now().Nanosecond()
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// drop test db
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res, err := db.Exec("drop database if exists " + demodb)
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checkErr(err, "drop database " + demodb)
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affectd, err := res.RowsAffected()
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checkErr(err, "drop db, res.RowsAffected")
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et := time.Now().Nanosecond()
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fmt.Printf("drop database result:\n %d row(s) affectd (%6.6fs)\n\n", affectd, (float32(et-st))/1E9)
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}
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func create_database_stmt(db *sql.DB,demodb string) {
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st := time.Now().Nanosecond()
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// create database
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//var stmt interface{}
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stmt, err := db.Prepare("create database ?")
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checkErr(err, "create db, db.Prepare")
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//var res driver.Result
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res, err := stmt.Exec(demodb)
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checkErr(err, "create db, stmt.Exec")
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//fmt.Printf("Query OK, %d row(s) affected()", res.RowsAffected())
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affectd, err := res.RowsAffected()
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checkErr(err, "create db, res.RowsAffected")
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et := time.Now().Nanosecond()
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fmt.Printf("create database result:\n %d row(s) affectd (%6.6fs)\n\n", affectd, (float32(et-st))/1E9)
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}
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func use_database_stmt (db *sql.DB,demodb string) {
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st := time.Now().Nanosecond()
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// create database
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//var stmt interface{}
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stmt, err := db.Prepare("use " + demodb)
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checkErr(err, "use db, db.Prepare")
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res, err := stmt.Exec()
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checkErr(err, "use db, stmt.Exec")
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affectd, err := res.RowsAffected()
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checkErr(err, "use db, res.RowsAffected")
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et := time.Now().Nanosecond()
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fmt.Printf("use database result:\n %d row(s) affectd (%6.6fs)\n\n", affectd, (float32(et-st))/1E9)
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}
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func create_table_stmt (db *sql.DB,demot string) {
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st := time.Now().Nanosecond()
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// create table
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// (ts timestamp, id int, name binary(8), len tinyint, flag bool, notes binary(8), fv float, dv double)
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stmt, err := db.Prepare("create table ? (? timestamp, ? int, ? binary(10), ? tinyint, ? bool, ? binary(8), ? float, ? double)")
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checkErr(err, "create table db.Prepare")
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res, err := stmt.Exec(demot, "ts", "id", "name", "len", "flag", "notes", "fv", "dv")
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checkErr(err, "create table stmt.Exec")
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affectd, err := res.RowsAffected()
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checkErr(err, "create table res.RowsAffected")
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et := time.Now().Nanosecond()
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fmt.Printf("create table result:\n %d row(s) affectd (%6.6fs)\n\n", affectd, (float32(et-st))/1E9)
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}
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func insert_data_stmt(db *sql.DB,demot string) {
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st := time.Now().Nanosecond()
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// insert data into table
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stmt, err := db.Prepare("insert into ? values(?, ?, ?, ?, ?, ?, ?, ?) (?, ?, ?, ?, ?, ?, ?, ?) (?, ?, ?, ?, ?, ?, ?, ?)")
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checkErr(err, "insert db.Prepare")
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res, err := stmt.Exec(demot, "now" , 1000, "'haidian'" , 6, true, "'AI world'", 6987.654, 321.987,
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"now+1s", 1001, "'changyang'" , 7, false, "'DeepMode'", 12356.456, 128634.456,
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"now+2s", 1002, "'chuangping'" , 8, true, "'database'", 3879.456, 65433478.456,)
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checkErr(err, "insert data, stmt.Exec")
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affectd, err := res.RowsAffected()
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checkErr(err, "res.RowsAffected")
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et := time.Now().Nanosecond()
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fmt.Printf("insert data result:\n %d row(s) affectd (%6.6fs)\n\n", affectd, (float32(et-st))/1E9)
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}
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func select_data_stmt(db *sql.DB, demot string) {
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st := time.Now().Nanosecond()
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stmt, err := db.Prepare("select ?, ?, ?, ?, ?, ?, ?, ? from ?" ) // go binary mode
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checkErr(err, "db.Prepare")
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rows, err := stmt.Query("ts", "id","name","len", "flag","notes", "fv", "dv", demot)
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checkErr(err, "stmt.Query")
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fmt.Printf("%10s%s%8s %5s %8s%s %s %10s%s %7s%s %8s%s %11s%s %14s%s\n", " ","ts", " ", "id"," ", "name"," ","len", " ","flag"," ", "notes", " ", "fv", " ", " ", "dv")
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var affectd int
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for rows.Next() {
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var ts string
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var name string
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var id int
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var len int8
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var flag bool
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var notes string
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var fv float32
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var dv float64
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err = rows.Scan(&ts, &id, &name, &len, &flag, ¬es, &fv, &dv)
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//fmt.Println("start scan fields from row.rs, &fv:", &fv)
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//err = rows.Scan(&fv)
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checkErr(err, "rows.Scan")
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fmt.Printf("%s\t", ts)
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fmt.Printf("%d\t",id)
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fmt.Printf("%10s\t",name)
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fmt.Printf("%d\t",len)
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fmt.Printf("%t\t",flag)
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fmt.Printf("%s\t",notes)
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fmt.Printf("%06.3f\t",fv)
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fmt.Printf("%09.6f\n",dv)
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affectd++
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}
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et := time.Now().Nanosecond()
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fmt.Printf("insert data result:\n %d row(s) affectd (%6.6fs)\n\n", affectd, (float32(et-st))/1E9)
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}
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func checkErr(err error, prompt string) {
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if err != nil {
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fmt.Printf("%s\n", prompt)
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panic(err)
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}
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}
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