teradatasql
Version:
Teradata SQL Driver for Node.js
131 lines • 6.73 kB
JavaScript
;
// Copyright 2023 by Teradata Corporation. All rights reserved.
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
// This sample program demonstrates how to create and call a SQL stored procedure
// with a variety of parameters and dynamic result sets.
// @ts-ignore
const teradatasql = __importStar(require("teradatasql"));
function DisplayResults(cur) {
while (true) {
console.log(" === metadata ===");
console.log(" cur.rowcount:", cur.rowcount);
console.log(" cur.description:", cur.description);
console.log(" === result ===");
console.log(cur.fetchall());
if (!cur.nextset()) {
break;
}
}
}
function cur_execute(cur, sSQL, params) {
console.log();
console.log("cur.execute", sSQL, "bound values", params);
cur.execute(sSQL, params);
DisplayResults(cur);
}
function cur_callproc(cur, sProcName, params) {
console.log();
console.log("cur.callproc", sProcName, "bound values", params);
cur.callproc(sProcName, params); // OUT parameters are not supported by .callproc
DisplayResults(cur);
}
const con = teradatasql.connect({ host: "whomooz", user: "guest", password: "please" });
try {
const cur = con.cursor();
try {
// Demonstrate a stored procedure having IN and INOUT parameters.
// Returns one result set having one row and one column containing the output parameter value.
cur.execute("replace procedure examplestoredproc (in p1 integer, inout p2 integer) begin set p2 = p1 + p2 ; end ;");
try {
cur_execute(cur, "{call examplestoredproc (3, 5)}"); // literal parameter values
cur_execute(cur, "{call examplestoredproc (?, ?)}", [10, 7]); // bound parameter values
cur_callproc(cur, "examplestoredproc", [20, 4]); // bound parameter values
// Demonstrate a stored procedure having one OUT parameter.
// Returns one result set having one row and one column containing the output parameter value.
// Only demonstrate .execute because OUT parameters are not supported by .callproc
// OUT parameters must be unbound.
cur.execute("replace procedure examplestoredproc (out p1 varchar(100)) begin set p1 = 'foobar' ; end ;");
cur_execute(cur, "{call examplestoredproc (?)}");
// Demonstrate a stored procedure having no parameters that returns one dynamic result set.
// Returns two result sets.
// The first result set is empty having no rows or columns, because there are no output parameter values.
// The second result set is the dynamic result set returned by the stored procedure.
cur.execute(`replace procedure examplestoredproc ()
dynamic result sets 1
begin
declare cur1 cursor with return for select * from dbc.dbcinfo order by 1 ;
open cur1 ;
end ;`);
cur_execute(cur, "{call examplestoredproc}");
cur_callproc(cur, "examplestoredproc");
// Demonstrate a stored procedure having IN and INOUT parameters that returns two dynamic result sets.
// Returns three result sets.
// The first result set has one row and one column containing the output parameter values.
// The second and third result sets are dynamic result sets returned by the stored procedure.
cur.execute(`replace procedure examplestoredproc (in p1 integer, inout p2 integer, inout p3 integer)
dynamic result sets 2
begin
declare cur1 cursor with return for select * from dbc.dbcinfo order by 1 ;
declare cur2 cursor with return for select infodata, infokey from dbc.dbcinfo order by 1 ;
open cur1 ;
open cur2 ;
set p2 = p1 + p2 ;
set p3 = p1 * p3 ;
end ;`);
cur_execute(cur, "{call examplestoredproc (2, 1, 3)}"); // literal parameter values
cur_execute(cur, "{call examplestoredproc (?, ?, ?)}", [3, 2, 4]); // bound IN and INOUT parameter values
cur_callproc(cur, "examplestoredproc", [10, 3, 2]); // bound IN and INOUT parameter values
// Demonstrate a stored procedure having IN, INOUT, and OUT parameters that returns two dynamic result sets.
// Returns three result sets.
// The first result set has one row and two columns containing the output values from the INOUT and OUT parameters.
// The second and third result sets are dynamic result sets returned by the stored procedure.
// Only demonstrate .execute because OUT parameters are not supported by .callproc
// OUT parameters must be unbound.
cur.execute(`replace procedure examplestoredproc (in p1 integer, inout p2 integer, out p3 varchar(100))
dynamic result sets 2
begin
declare cur1 cursor with return for select * from dbc.dbcinfo order by 1 desc ;
declare cur2 cursor with return for select infodata, infokey from dbc.dbcinfo order by 1 ;
open cur1 ;
open cur2 ;
set p2 = p1 + p2 ;
set p3 = 'hello' ;
end ;`);
cur_execute(cur, "{call examplestoredproc (10, 5, ?)}"); // literal parameter values
cur_execute(cur, "{call examplestoredproc (?, ?, ?)}", [20, 7]); // bound IN and INOUT parameter values
}
finally {
cur.execute("drop procedure examplestoredproc");
}
}
finally {
cur.close();
}
}
finally {
con.close();
}
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