1Z0-909 Exam Question 21
Examine these commands which execute successfully:
mYsql> CREATE TABLE income (acct_num INT, amount DECIMAL(10,2));
mysql> CREATE TRIGGER subtotal BEFORE INSERT ON income
FOR EACH ROW SET @subtotal = subtotal + NEW.amount;
Which is true for the income table?
mYsql> CREATE TABLE income (acct_num INT, amount DECIMAL(10,2));
mysql> CREATE TRIGGER subtotal BEFORE INSERT ON income
FOR EACH ROW SET @subtotal = subtotal + NEW.amount;
Which is true for the income table?
1Z0-909 Exam Question 22
Examine the appointments table definition which contains one million rows:
Now, examine this statement which executes successfully:
Which statement will improve query performance?
Now, examine this statement which executes successfully:
Which statement will improve query performance?
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