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CREATE TABLE t1( | ||
a VARCHAR(8) NOT NULL | ||
); | ||
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CREATE INDEX i1 ON t1(a); | ||
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CREATE INDEX i2 ON t1(a); | ||
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SELECT * FROM t1 USE INDEX; | ||
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SELECT * FROM t1 USE INDEX (i1) IGNORE INDEX FOR ORDER BY (i2) ORDER BY a; | ||
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SELECT * FROM t1 USE INDEX (i1) USE INDEX (i1,i1); | ||
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SELECT * FROM t1 USE INDEX FOR JOIN (i1) FORCE INDEX FOR JOIN (i2); | ||
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CREATE TABLE table1( | ||
col1 TEXT, | ||
col2 TEXT, | ||
col3 TEXT | ||
); | ||
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CREATE INDEX col1_index ON table1(col1); | ||
CREATE INDEX col2_index ON table1(col2); | ||
CREATE INDEX col3_index ON table1(col3); | ||
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SELECT * FROM table1 USE INDEX (col1_index,col2_index) | ||
WHERE col1=1 AND col2=2 AND col3=3; | ||
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SELECT * FROM table1 IGNORE INDEX (col3_index) | ||
WHERE col1=1 AND col2=2 AND col3=3; |