Join Types Index

A | C | E | F | I | R | S | U

A

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ALL

Section 8.2.1.19, “Avoiding Full Table Scans”
Section 8.2.1.11, “Block Nested-Loop and Batched Key Access Joins”
Section 8.8.2, “EXPLAIN Output Format”
Section 8.2.1.6, “Nested-Loop Join Algorithms”

C

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const

Section 8.8.2, “EXPLAIN Output Format”
Section 8.8.3, “Extended EXPLAIN Output Format”
Section 18.3.3.8.2, “NDB Cluster System Variables”
Section 8.2.1.13, “ORDER BY Optimization”
Section 8.2.1.2, “Range Optimization”
Section 13.2.9, “SELECT Syntax”

E

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eq_ref

Section 8.2.1.11, “Block Nested-Loop and Batched Key Access Joins”
Section 8.8.2, “EXPLAIN Output Format”
Section 8.2.1.5, “Index Condition Pushdown Optimization”
Section 15.7.1, “MERGE Table Advantages and Disadvantages”
Section 18.3.3.8.2, “NDB Cluster System Variables”
Section 8.2.2.4, “Optimizing Subqueries with the EXISTS Strategy”

F

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fulltext

Section 8.8.2, “EXPLAIN Output Format”

I

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index

Section 8.2.1.11, “Block Nested-Loop and Batched Key Access Joins”
Section 8.8.2, “EXPLAIN Output Format”
Section 8.2.1.6, “Nested-Loop Join Algorithms”

index_merge

Section 8.8.2, “EXPLAIN Output Format”
Section 8.2.1.3, “Index Merge Optimization”

index_subquery

Section 8.8.2, “EXPLAIN Output Format”
Section 13.2.10.10, “Optimizing Subqueries”
Section 8.2.2.4, “Optimizing Subqueries with the EXISTS Strategy”

R

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range

Section 8.2.1.11, “Block Nested-Loop and Batched Key Access Joins”
Section 8.8.2, “EXPLAIN Output Format”
Section 8.2.1.14, “GROUP BY Optimization”
Section 8.2.1.5, “Index Condition Pushdown Optimization”
Section 8.2.1.3, “Index Merge Optimization”
Section 8.2.1.6, “Nested-Loop Join Algorithms”
Section 8.2.1.2, “Range Optimization”

ref

Section 8.2.1.11, “Block Nested-Loop and Batched Key Access Joins”
Section 8.8.2, “EXPLAIN Output Format”
Section 8.8.3, “Extended EXPLAIN Output Format”
Section 8.2.1.5, “Index Condition Pushdown Optimization”
Section 8.3.7, “InnoDB and MyISAM Index Statistics Collection”
Section 15.7.1, “MERGE Table Advantages and Disadvantages”
Section 18.3.3.8.2, “NDB Cluster System Variables”
Section 8.2.2.3, “Optimizing Derived Tables”
Section 8.2.2.4, “Optimizing Subqueries with the EXISTS Strategy”

ref_or_null

Section 8.8.2, “EXPLAIN Output Format”
Section 8.2.1.5, “Index Condition Pushdown Optimization”
Section 8.2.1.12, “IS NULL Optimization”
Section 8.2.2.4, “Optimizing Subqueries with the EXISTS Strategy”

S

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system

Section 8.8.2, “EXPLAIN Output Format”
Section 8.8.3, “Extended EXPLAIN Output Format”
Section 8.2.1.2, “Range Optimization”
Section 13.2.9, “SELECT Syntax”

U

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unique_subquery

Section 8.8.2, “EXPLAIN Output Format”
Section 13.2.10.10, “Optimizing Subqueries”
Section 8.2.2.4, “Optimizing Subqueries with the EXISTS Strategy”