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SQL String functions — practice questions · JobPrax

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SQL

String functions

Clean and transform text.

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Basic0 / 26
Intermediate0 / 7
Advanced0 / 7

SQL topics

Interview questions0/57
CREATE TABLE & data types0/40
Constraints0/40
INSERT, UPDATE & DELETE0/40
ALTER, DROP & views0/40
SELECT & WHERE0/40
ORDER BY, LIMIT & DISTINCT0/40
Aggregates & GROUP BY0/40
HAVING0/40
Joins0/40
Self & cross joins0/40
Subqueries0/40
CTEs (WITH)0/40
CASE WHEN0/40
NULL handling0/40
String functions0/40
Date functions0/40
Window functions: ranking0/40
Window functions: LAG, LEAD & running totals0/40
UNION, INTERSECT & EXCEPT0/40
Mixed & interview problems0/40