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# print method doesn't change unexpectedly
Code
sql_build(semi_join(lf1, lf2))
Message
Joining, by = "x"
Output
<SQL SEMI JOIN>
By:
x-x
X:
<IDENT> df
Y:
<IDENT> df
# generated sql doesn't change unexpectedly
Code
semi_join(lf, lf)
Message
Joining, by = c("x", "y")
Output
<SQL>
SELECT *
FROM `df` AS `df_LHS`
WHERE EXISTS (
SELECT 1 FROM `df` AS `df_RHS`
WHERE (`df_LHS`.`x` = `df_RHS`.`x` AND `df_LHS`.`y` = `df_RHS`.`y`)
)
---
Code
anti_join(lf, lf)
Message
Joining, by = c("x", "y")
Output
<SQL>
SELECT *
FROM `df` AS `df_LHS`
WHERE NOT EXISTS (
SELECT 1 FROM `df` AS `df_RHS`
WHERE (`df_LHS`.`x` = `df_RHS`.`x` AND `df_LHS`.`y` = `df_RHS`.`y`)
)
|
