where_condition
Syntax
Description
Syntax |
Description |
---|---|
where_condition |
Judgment condition of where. |
and |
Logical operator: AND |
or |
Logical operator: OR |
not |
Logical operator: NOT |
( |
Start of the subjudgment condition. |
) |
End of the subjudgment condition. |
condition |
Judgment condition. |
exists |
Keyword used to determine whether a non-empty collection exists. If exists is followed by a subquery, then the subquery must contain a judgment condition. |
in |
Keyword used to determine whether attributes are in the same collection. |
attrs_value_set_expr |
Collection of attribute values. |
attr_expr |
Attribute expression. |
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