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SQL

Optimization - FROM Clause

FROM-clause optimization

SQL

SQL HAVING Example

HAVING-clause COUNT-Function aggregate-functions

SQL

SQL Aggregate Functions

COUNT-Function SUM-Function aggregate-functions MAX-Function MIN-Function LAST-Function FIRST-Function AVG-Function

SQL

INNER JOIN example

join cross-join inner-join

SQL

SQL - Sub Queries

SQL

Logical Operators - Part1

operators logical-operators

SQL

Character Sets and Collations in General

MySQL collation character-sets

SQL

The DROP INDEX Statement

Oracle DROP-INDEX MySQL DB2 DROP-statement MS-Access SQL-server

SQL

INSERT Query

INSERT-statement

SQL

Phantom reads Example

SERIALIZABLE REPEATABLE-READ phantom-read transactions isolation

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