pq: simple support for named parameters #846
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what: Add named parameters support for "conn". It works basically like ordinals parameters, but with an alphabetical label prefixed with ":" Example: Select $1, $2, $1; may become Select :firstName, :lastName, :firstName Why: SQL queries may be difficult to maintain, especially when the complexity is growing. Ordinal parameters are great, but may not be meaningfull for the one who is trying to understand the query. The goal here is not to have something full featured and complex : pq is "just" a driver, but having a thin layer, simple to maintain, that will fit 90% of the needs. Limitations: Its simplicity means that there is many limitations : First of all, using mixed types of parameters is not allowed. Man can not use ordinal parameters and named parameters is the same query. Refs lib#534
Add explicit cast for some postgres version. Refs lib#534
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what:
Add named parameters support for "conn". It works basically like ordinals
parameters, but with an alphabetical label prefixed with ":"
Example:
Select $1, $2, $1; may become Select :firstName, :lastName, :firstName
Why:
SQL queries may be difficult to maintain, especially when the complexity
is growing. Ordinal parameters are great, but may not be meaningfull for
the one who is trying to understand the query.
The goal here is not to have something full featured and complex : pq is
"just" a driver, but having a thin layer, simple to maintain, that will
fit 90% of the needs.
Limitations:
Its simplicity means that there is many limitations :
First of all, using mixed types of parameters is not
allowed. Man can not use ordinal parameters and named
parameters is the same query.
Refs #534