Which of the following PHP statements will execute the query "select * from item" using connection variable $conn: $sql= mysqli query ($conn, "select from item");
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- Which of the following is not a valid SQL statement? CREATE TABLE anothernewtable (newtableid VARCHAR2 (2)); CREATE TABLE anothernewtable (date, anotherdate) AS (SELECT orderdate, shipdate FROM orders); CREATE TABLE anothernewtable (firstdate, seconddate) AS (SELECT orderdate, shipdate FROM orders); All of the above are valid statements.Which object in the data dictionary enables you to verify DEFAULT column settings? DEFAULT_COLUMNS DEF_TAB_COLUMNS USER_TAB_COLUMNS None of the aboveWhich of the following SQL statements is invalid and returns an error message? ALTER TABLE books ADD CONSTRAINT books_pubid_uk UNIQUE (pubid); ALTER TABLE books ADD CONSTRAINT books_pubid_pk PRIMARY KEY (pubid); ALTER TABLE books ADD CONSTRAINT books_pubid_nn NOT NULL (pubid); ALTER TABLE books ADD CONSTRAINT books_pubid_fk FOREIGN KEY (pubid) REFERENCES publisher (pubid); All of the above statements are invalid.
- Which of the following statements deletes all rows in the HOMEWORK10 table? a. DELETE FROM homework10; b. DELETE . FROM homework10; c. DELETE FROM homework10; d. DELETE FROM homework10 WHERE amid = ; e. Both c and d delete all rows in the HOMEWORK10 table.Which object in the data dictionary enables you to verify DEFAULT column settings?a. DEFAULT_COLUMNSb. DEF_TAB_COLUMNSc. USER_TAB_COLUMNSd. None of the aboveWhich of the following is not a valid SQL statement?a. CREATE TABLE anothernewtable (newtableid VARCHAR2(2));b. CREATE TABLE anothernewtable (date, anotherdate) AS (SELECT orderdate, shipdate FROM orders);c. CREATE TABLE anothernewtable (firstdate, seconddate) AS (SELECT orderdate, shipdate FROM orders);d. All of the above are valid statements.
- This does not work: CREATE OR REPLACE TRIGGER trg_char_hours AFTER INSERT ON CHARTER FOR EACH ROW BEGIN UPDATE AIRCRAFT SET AC_TTAF = AC_TTAF + NEW.CHAR_HOURS_FLOWN, AC_TTEL = AC_TTEL + NEW.CHAR_HOURS_FLOWN, AC_TTER = AC_TTER + NEW.CHAR_HOURS_FLOWN WHERE AIRCRAFT.AC_NUMBER = NEW.AC_NUMBER; END; I get the following error: ERROR 1064 (42000) at line 1: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'TRIGGER trg_char_hours AFTER INSERT ON CHARTER FOR EACH ROW BEGIN UPDATE AIRCRAF' at line 1 Here is the original question: Create a trigger named trg_char_hours that automatically updates the AIRCRAFT table when a new CHARTER row is added. Use the CHARTER table’s CHAR_HOURS_FLOWN to update the AIRCRAFT table’s AC_TTAF, AC_TTEL, and AC_TTER values. (Hint: use temp values, as the INSERT event does not accept the OLD keyword.)I think my query needs temp variables instead of using NEW but I am not sure how. Here is my query: delimiter // DROP TRIGGER trg_pic_hours; create trigger trg_pic_hours after insert on CREW for each row begin IF NEW.CREW_JOB = 'Pilot' THEN update PILOT set PIL_PIC_HRS = PIL_PIC_HRS + ( select CHAR_HOURS_FLOWN from CHARTER where CHAR_TRP = NEW.CHAR_TRP) where EMP_NUM = NEW.EMP_NUM; END IF; END // If I run the query with the NEW.CHAR_TRP entry errors out if I remove NEW from it it will run ok. I have attached the schema<?php session_start(); include "db_conn.php"; if (isset($_POST['uname']) && isset($_POST['password'])) { function validate($data){ $data = trim($data); $data = stripslashes($data); $data = htmlspecialchars($data); return $data; } $uname = validate($_POST['user_name']); $pass = validate($_POST['password']); if (empty($uname)) { header("Location: index.php?error=User Name is required"); exit(); }else if(empty($pass)){ header("Location: index.php?error=Password is required"); exit(); }else{ $sql = "SELECT * FROM users WHERE user_name='$uname' AND password='$pass'"; $result = mysqli_query($conn, $sql); if (mysqli_num_rows($result) === 1) { $row = mysqli_fetch_assoc($result); if ($row['user_name'] === $uname && $row['password'] === $pass) { echo "Logged in!"; $_SESSION['user_name'] = $row['user_name'];…
- Please written by computer source 11 1. (Use AP) Write a SELECT statement that returns six columns from three tables, all using alias names: VendorName column named Vendor, InvoiceDate column named Date of Invoice (include the spaces), InvoiceNumber column named Number, InvoiceSequence column named #, InvoiceLineItemAmount column named Line Item Amount (include the spaces), and Tax (which is the line item amount multiplied by 6%). Also, assign the following table alias names to the tables: Vendors table named v, Invoices table named i, InvoiceLineItems table named ili. List only data for the Line Item Amounts greater than or equal to $50 but less than $1200 and Vendornames that begin with C-D or K-S. Sort the final result set by Vendor name ascending, and Line Item Amount descending,. 2. (Use AP) Create a query listing all of the vendors (show only vendorid, vendorname) from the state of Wisconsin (WI) or New Jersey (NJ) or Pennsylvania (PA) who have never been invoiced…Which function can be used to add spaces to a column until it’s a specific width? (refer to the tables in the JustLee Books database.)a. TRIMLb. PADLc. LWIDTHd. none of the aboveMS SQL SERVER Write a statement to create a stored procedure named Find_Contact based on the Contacts table in question 1 A, which does the following: Accepts an input parameter named @FindMobile that has the data type varchar. IF MobileNo exists: Print the message “Mobile No for:” concatenated with the input parameter. IF MobileNo do not exists: Print the message “Do Not Exist” concatenated with the input parameter. Executes a SELECT statement on the table Contacts, passing the input parameter as part of the WHERE clause. Return the contact details that match the input parameter value.
