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MySQL Connector/C++ 9.5.0
MySQL connector library for C and C++ applications
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An operation which selects rows from a table. More...
Public Member Functions | |
| Operation & | where (const string &expr) |
| Specify row selection criteria. More... | |
| Operation & | groupBy (Expr... group_by_spec) |
| Specify grouping of items in a query result. More... | |
| Operation & | having (const string &having_spec) |
| Specify filter over grouped results of a query. More... | |
An operation which selects rows from a table.
The class defines various methods, such as where(), to specify which rows should be returned and in which order.
For each row the operation can return all fields from the row or a set of values defined by projection expressions specified when the operation was created.
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inline |
Specify row selection criteria.
The criteria is specified as a Boolean expression string.
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inlineinherited |
Specify grouping of items in a query result.
Arguments are a one or more expressions. Documents/rows for which expressions evaluate to the same value are grouped together.
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inlineinherited |
Specify filter over grouped results of a query.
The argument is a Boolean expression which can use aggregation functions.