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NULL-values
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sql - defaults and null values
NULL-values
Which of the following is NOT an explicit data type reference?...
NULL-values
Which of the following KEYWORDS will return the first NON-NULL val...
NULL-values
General Functions
NULL-values
NULLIF
NULL-values
NVL2
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NVL
NULL-values
What is the difference between a unique key and primary key?...
NULL-values
SQL PRIMARY KEY Constraint
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NOT NULL Constraint
NULL-values
Given an Income table which, among others, contains the following two co...
NULL-values
Given the students table which was created by the following SQL-query: ...
NULL-values
Given the cars table: color ----- blue red null blue ...
NULL-values
Which of the following expressions are correct?...
NULL-values
Which operator has a highest priority in a SQL query and will be analyzed first...
NULL-values
Given the Students table: +-----+-----------+-------+ | SId | FirstNa...
NULL-values
Will the following query fetch all records from tab table? ...
NULL-values
Given an empty table created using the following query: C...
NULL-values
Given following two tables.: EMPLOYEES: ID | NAME | JOB_I...
NULL-values
Assuming some column EX_COL contains following data in it - 100, 200, 300, NULL,...
NULL-values
Given the Persons table: +-----+--------------+-------+ | Id | Fir...
NULL-values
Given Clients table +------+--------------+----------+ | ID | Name...
NULL-values
Given an empty table that was created using the query: CR...
NULL-values
What data will the following query return: SELECT DI...
NULL-values
Given table: CREATE TABLE employee (id integer NOT NULL, department_i...
NULL-values
Given Products table +--------+-----------+ | ID | ...
NULL-values
Pick all INSERT statements that will work correctly for the following table: ...
NULL-values
Is CAST function used in SQL-expressions that use UNION?...
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COUNT() Function
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