Postgres-XC 1.2.1 Documentation
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SPI_cursor_open_with_paramlist

Name

SPI_cursor_open_with_paramlist -- set up a cursor using parameters

Synopsis

Portal SPI_cursor_open_with_paramlist(const char *name,
                                      SPIPlanPtr plan,
                                      ParamListInfo params,
                                      bool read_only)

Description

Note: At present, this section is just taken from PostgreSQL documentation and is subject to revision for Postgres-XC.

SPI_cursor_open_with_paramlist sets up a cursor (internally, a portal) that will execute a statement prepared by SPI_prepare. This function is equivalent to SPI_cursor_open except that information about the parameter values to be passed to the query is presented differently. The ParamListInfo representation can be convenient for passing down values that are already available in that format. It also supports use of dynamic parameter sets via hook functions specified in ParamListInfo.

The passed-in parameter data will be copied into the cursor's portal, so it can be freed while the cursor still exists.

Arguments

Note: At present, this section is just taken from PostgreSQL documentation and is subject to revision for Postgres-XC.

const char * name

name for portal, or NULL to let the system select a name

SPIPlanPtr plan

prepared statement (returned by SPI_prepare)

ParamListInfo params

data structure containing parameter types and values; NULL if none

bool read_only

true for read-only execution

Return Value

Note: At present, this section is just taken from PostgreSQL documentation and is subject to revision for Postgres-XC.

Pointer to portal containing the cursor. Note there is no error return convention; any error will be reported via elog.

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