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Join Types Index

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

A

[index top]

ALL

Section 8.2.1.23, “Avoiding Full Table Scans”
Section 8.2.1.12, “Block Nested-Loop and Batched Key Access Joins”
Section 8.8.2, “EXPLAIN Output Format”
Section 8.2.1.7, “Nested-Loop Join Algorithms”

C

[index top]

const

Section 8.8.2, “EXPLAIN Output Format”
Section 8.8.3, “Extended EXPLAIN Output Format”
Section 22.3.3.9.2, “NDB Cluster System Variables”
Section 8.9.3, “Optimizer Hints”
Section 8.2.1.16, “ORDER BY Optimization”
Section 8.2.1.2, “Range Optimization”
Section 13.2.10, “SELECT Statement”

E

[index top]

eq_ref

Section 8.2.1.12, “Block Nested-Loop and Batched Key Access Joins”
Section 8.8.2, “EXPLAIN Output Format”
Section 8.2.1.6, “Index Condition Pushdown Optimization”
Section 16.7.1, “MERGE Table Advantages and Disadvantages”
Section 22.3.3.9.2, “NDB Cluster System Variables”
Section 8.2.2.3, “Optimizing Subqueries with the EXISTS Strategy”
Section 26.12.4.1, “The events_waits_current Table”

F

[index top]

fulltext

Section 8.8.2, “EXPLAIN Output Format”

I

[index top]

index

Section 8.2.1.12, “Block Nested-Loop and Batched Key Access Joins”
Section 8.8.2, “EXPLAIN Output Format”
Section 8.2.1.7, “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 8.2.2.3, “Optimizing Subqueries with the EXISTS Strategy”

R

[index top]

range

Section 8.2.1.12, “Block Nested-Loop and Batched Key Access Joins”
Section 8.8.2, “EXPLAIN Output Format”
Section 8.2.1.17, “GROUP BY Optimization”
Section 8.2.1.6, “Index Condition Pushdown Optimization”
Section 8.2.1.3, “Index Merge Optimization”
Section 8.2.1.7, “Nested-Loop Join Algorithms”
Section 8.9.3, “Optimizer Hints”
Section 8.2.1.2, “Range Optimization”

ref

Section 8.2.1.12, “Block Nested-Loop and Batched Key Access Joins”
Section 8.8.2, “EXPLAIN Output Format”
Section 8.8.3, “Extended EXPLAIN Output Format”
Section 8.2.1.6, “Index Condition Pushdown Optimization”
Section 8.3.8, “InnoDB and MyISAM Index Statistics Collection”
Section 16.7.1, “MERGE Table Advantages and Disadvantages”
Section 22.3.3.9.2, “NDB Cluster System Variables”
Section 8.9.3, “Optimizer Hints”
Section 8.2.2.4, “Optimizing Derived Tables, View References, and Common Table Expressions with Merging or Materialization”
Section 8.2.2.3, “Optimizing Subqueries with the EXISTS Strategy”

ref_or_null

Section 8.8.2, “EXPLAIN Output Format”
Section 8.2.1.6, “Index Condition Pushdown Optimization”
Section 8.2.1.15, “IS NULL Optimization”
Section 8.2.2.3, “Optimizing Subqueries with the EXISTS Strategy”

S

[index top]

system

Section 8.8.2, “EXPLAIN Output Format”
Section 8.8.3, “Extended EXPLAIN Output Format”
Section 8.2.1.2, “Range Optimization”
Section 13.2.10, “SELECT Statement”

U

[index top]

unique_subquery

Section 8.8.2, “EXPLAIN Output Format”
Section 8.2.2.3, “Optimizing Subqueries with the EXISTS Strategy”