mirror of
https://github.com/QB64Official/qb64.git
synced 2024-09-19 19:05:03 +00:00
715 lines
19 KiB
Tcl
715 lines
19 KiB
Tcl
# tdbcsqlite3.tcl --
|
|
#
|
|
# SQLite3 database driver for TDBC
|
|
#
|
|
# Copyright (c) 2008 by Kevin B. Kenny.
|
|
# See the file "license.terms" for information on usage and redistribution
|
|
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
|
|
#
|
|
# RCS: @(#) $Id: tdbcodbc.tcl,v 1.47 2008/02/27 02:08:27 kennykb Exp $
|
|
#
|
|
#------------------------------------------------------------------------------
|
|
|
|
package require tdbc
|
|
package require sqlite3
|
|
|
|
package provide tdbc::sqlite3 1.0.6
|
|
|
|
namespace eval tdbc::sqlite3 {
|
|
namespace export connection
|
|
}
|
|
|
|
#------------------------------------------------------------------------------
|
|
#
|
|
# tdbc::sqlite3::connection --
|
|
#
|
|
# Class representing a SQLite3 database connection
|
|
#
|
|
#------------------------------------------------------------------------------
|
|
|
|
::oo::class create ::tdbc::sqlite3::connection {
|
|
|
|
superclass ::tdbc::connection
|
|
|
|
variable timeout
|
|
|
|
# The constructor accepts a database name and opens the database.
|
|
|
|
constructor {databaseName args} {
|
|
set timeout 0
|
|
if {[llength $args] % 2 != 0} {
|
|
set cmd [lrange [info level 0] 0 end-[llength $args]]
|
|
return -code error \
|
|
-errorcode {TDBC GENERAL_ERROR HY000 SQLITE3 WRONGNUMARGS} \
|
|
"wrong # args, should be \"$cmd ?-option value?...\""
|
|
}
|
|
next
|
|
sqlite3 [namespace current]::db $databaseName
|
|
if {[llength $args] > 0} {
|
|
my configure {*}$args
|
|
}
|
|
db nullvalue \ufffd
|
|
}
|
|
|
|
# The 'statementCreate' method forwards to the constructor of the
|
|
# statement class
|
|
|
|
forward statementCreate ::tdbc::sqlite3::statement create
|
|
|
|
# The 'configure' method queries and sets options to the database
|
|
|
|
method configure args {
|
|
if {[llength $args] == 0} {
|
|
|
|
# Query all configuration options
|
|
|
|
set result {-encoding utf-8}
|
|
lappend result -isolation
|
|
if {[db onecolumn {PRAGMA read_uncommitted}]} {
|
|
lappend result readuncommitted
|
|
} else {
|
|
lappend result serializable
|
|
}
|
|
lappend result -readonly 0
|
|
lappend result -timeout $timeout
|
|
return $result
|
|
|
|
} elseif {[llength $args] == 1} {
|
|
|
|
# Query a single option
|
|
|
|
set option [lindex $args 0]
|
|
switch -exact -- $option {
|
|
-e - -en - -enc - -enco - -encod - -encodi - -encodin -
|
|
-encoding {
|
|
return utf-8
|
|
}
|
|
-i - -is - -iso - -isol - -isola - -isolat - -isolati -
|
|
-isolatio - -isolation {
|
|
if {[db onecolumn {PRAGMA read_uncommitted}]} {
|
|
return readuncommitted
|
|
} else {
|
|
return serializable
|
|
}
|
|
}
|
|
-r - -re - -rea - -read - -reado - -readon - -readonl -
|
|
-readonly {
|
|
return 0
|
|
}
|
|
-t - -ti - -tim - -time - -timeo - -timeou - -timeout {
|
|
return $timeout
|
|
}
|
|
default {
|
|
return -code error \
|
|
-errorcode [list TDBC GENERAL_ERROR HY000 SQLITE3 \
|
|
BADOPTION $option] \
|
|
"bad option \"$option\": must be\
|
|
-encoding, -isolation, -readonly or -timeout"
|
|
|
|
}
|
|
}
|
|
|
|
} elseif {[llength $args] % 2 != 0} {
|
|
|
|
# Syntax error
|
|
|
|
set cmd [lrange [info level 0] 0 end-[llength $args]]
|
|
return -code error \
|
|
-errorcode [list TDBC GENERAL_ERROR HY000 \
|
|
SQLITE3 WRONGNUMARGS] \
|
|
"wrong # args, should be \" $cmd ?-option value?...\""
|
|
}
|
|
|
|
# Set one or more options
|
|
|
|
foreach {option value} $args {
|
|
switch -exact -- $option {
|
|
-e - -en - -enc - -enco - -encod - -encodi - -encodin -
|
|
-encoding {
|
|
if {$value ne {utf-8}} {
|
|
return -code error \
|
|
-errorcode [list TDBC FEATURE_NOT_SUPPORTED 0A000 \
|
|
SQLITE3 ENCODING] \
|
|
"-encoding not supported. SQLite3 is always \
|
|
Unicode."
|
|
}
|
|
}
|
|
-i - -is - -iso - -isol - -isola - -isolat - -isolati -
|
|
-isolatio - -isolation {
|
|
switch -exact -- $value {
|
|
readu - readun - readunc - readunco - readuncom -
|
|
readuncomm - readuncommi - readuncommit -
|
|
readuncommitt - readuncommitte - readuncommitted {
|
|
db eval {PRAGMA read_uncommitted = 1}
|
|
}
|
|
readc - readco - readcom - readcomm - readcommi -
|
|
readcommit - readcommitt - readcommitte -
|
|
readcommitted -
|
|
rep - repe - repea - repeat - repeata - repeatab -
|
|
repeatabl - repeatable - repeatabler - repeatablere -
|
|
repeatablerea - repeatablread -
|
|
s - se - ser - seri - seria - serial - seriali -
|
|
serializ - serializa - serializab - serializabl -
|
|
serializable -
|
|
reado - readon - readonl - readonly {
|
|
db eval {PRAGMA read_uncommitted = 0}
|
|
}
|
|
default {
|
|
return -code error \
|
|
-errorcode [list TDBC GENERAL_ERROR HY000 \
|
|
SQLITE3 BADISOLATION $value] \
|
|
"bad isolation level \"$value\":\
|
|
should be readuncommitted, readcommitted,\
|
|
repeatableread, serializable, or readonly"
|
|
}
|
|
}
|
|
}
|
|
-r - -re - -rea - -read - -reado - -readon - -readonl -
|
|
-readonly {
|
|
if {$value} {
|
|
return -code error \
|
|
-errorcode [list TDBC FEATURE_NOT_SUPPORTED 0A000 \
|
|
SQLITE3 READONLY] \
|
|
"SQLite3's Tcl API does not support read-only\
|
|
access"
|
|
}
|
|
}
|
|
-t - -ti - -tim - -time - -timeo - -timeou - -timeout {
|
|
if {![string is integer $value]} {
|
|
return -code error \
|
|
-errorcode [list TDBC DATA_EXCEPTION 22018 \
|
|
SQLITE3 $value] \
|
|
"expected integer but got \"$value\""
|
|
}
|
|
db timeout $value
|
|
set timeout $value
|
|
}
|
|
default {
|
|
return -code error \
|
|
-errorcode [list TDBC GENERAL_ERROR HY000 \
|
|
SQLITE3 BADOPTION $value] \
|
|
"bad option \"$option\": must be\
|
|
-encoding, -isolation, -readonly or -timeout"
|
|
|
|
}
|
|
}
|
|
}
|
|
return
|
|
}
|
|
|
|
# The 'tables' method introspects on the tables in the database.
|
|
|
|
method tables {{pattern %}} {
|
|
set retval {}
|
|
my foreach row {
|
|
SELECT * from sqlite_master
|
|
WHERE type IN ('table', 'view')
|
|
AND name LIKE :pattern
|
|
} {
|
|
dict set row name [string tolower [dict get $row name]]
|
|
dict set retval [dict get $row name] $row
|
|
}
|
|
return $retval
|
|
}
|
|
|
|
# The 'columns' method introspects on columns of a table.
|
|
|
|
method columns {table {pattern %}} {
|
|
regsub -all ' $table '' table
|
|
set retval {}
|
|
set pattern [string map [list \
|
|
* {[*]} \
|
|
? {[?]} \
|
|
\[ \\\[ \
|
|
\] \\\[ \
|
|
_ ? \
|
|
% *] [string tolower $pattern]]
|
|
my foreach origrow "PRAGMA table_info('$table')" {
|
|
set row {}
|
|
dict for {key value} $origrow {
|
|
dict set row [string tolower $key] $value
|
|
}
|
|
dict set row name [string tolower [dict get $row name]]
|
|
if {![string match $pattern [dict get $row name]]} {
|
|
continue
|
|
}
|
|
switch -regexp -matchvar info [dict get $row type] {
|
|
{^(.+)\(\s*([[:digit:]]+)\s*,\s*([[:digit:]]+)\s*\)\s*$} {
|
|
dict set row type [string tolower [lindex $info 1]]
|
|
dict set row precision [lindex $info 2]
|
|
dict set row scale [lindex $info 3]
|
|
}
|
|
{^(.+)\(\s*([[:digit:]]+)\s*\)\s*$} {
|
|
dict set row type [string tolower [lindex $info 1]]
|
|
dict set row precision [lindex $info 2]
|
|
dict set row scale 0
|
|
}
|
|
default {
|
|
dict set row type [string tolower [dict get $row type]]
|
|
dict set row precision 0
|
|
dict set row scale 0
|
|
}
|
|
}
|
|
dict set row nullable [expr {![dict get $row notnull]}]
|
|
dict set retval [dict get $row name] $row
|
|
}
|
|
return $retval
|
|
}
|
|
|
|
# The 'primarykeys' method enumerates the primary keys on a table.
|
|
|
|
method primarykeys {table} {
|
|
set result {}
|
|
my foreach row "PRAGMA table_info($table)" {
|
|
if {[dict get $row pk]} {
|
|
lappend result [dict create ordinalPosition \
|
|
[expr {[dict get $row cid]+1}] \
|
|
columnName \
|
|
[dict get $row name]]
|
|
}
|
|
}
|
|
return $result
|
|
}
|
|
|
|
# The 'foreignkeys' method enumerates the foreign keys that are
|
|
# declared in a table or that refer to a given table.
|
|
|
|
method foreignkeys {args} {
|
|
|
|
variable ::tdbc::generalError
|
|
|
|
# Check arguments
|
|
|
|
set argdict {}
|
|
if {[llength $args] % 2 != 0} {
|
|
set errorcode $generalError
|
|
lappend errorcode wrongNumArgs
|
|
return -code error -errorcode $errorcode \
|
|
"wrong # args: should be [lrange [info level 0] 0 1]\
|
|
?-option value?..."
|
|
}
|
|
foreach {key value} $args {
|
|
if {$key ni {-primary -foreign}} {
|
|
set errorcode $generalError
|
|
lappend errorcode badOption
|
|
return -code error -errorcode $errorcode \
|
|
"bad option \"$key\", must be -primary or -foreign"
|
|
}
|
|
set key [string range $key 1 end]
|
|
if {[dict exists $argdict $key]} {
|
|
set errorcode $generalError
|
|
lappend errorcode dupOption
|
|
return -code error -errorcode $errorcode \
|
|
"duplicate option \"$key\" supplied"
|
|
}
|
|
dict set argdict $key $value
|
|
}
|
|
|
|
# If we know the table with the foreign key, search just its
|
|
# foreign keys. Otherwise, iterate over all the tables in the
|
|
# database.
|
|
|
|
if {[dict exists $argdict foreign]} {
|
|
return [my ForeignKeysForTable [dict get $argdict foreign] \
|
|
$argdict]
|
|
} else {
|
|
set result {}
|
|
foreach foreignTable [dict keys [my tables]] {
|
|
lappend result {*}[my ForeignKeysForTable \
|
|
$foreignTable $argdict]
|
|
}
|
|
return $result
|
|
}
|
|
|
|
}
|
|
|
|
# The private ForeignKeysForTable method enumerates the foreign keys
|
|
# in a specific table.
|
|
#
|
|
# Parameters:
|
|
#
|
|
# foreignTable - Name of the table containing foreign keys.
|
|
# argdict - Dictionary that may or may not contain a key,
|
|
# 'primary', whose value is the name of a table that
|
|
# must hold the primary key corresponding to the foreign
|
|
# key. If the 'primary' key is absent, all tables are
|
|
# candidates.
|
|
# Results:
|
|
#
|
|
# Returns the list of foreign keys that meed the specified
|
|
# conditions, as a list of dictionaries, each containing the
|
|
# keys, foreignConstraintName, foreignTable, foreignColumn,
|
|
# primaryTable, primaryColumn, and ordinalPosition. Note that the
|
|
# foreign constraint name is constructed arbitrarily, since SQLite3
|
|
# does not report this information.
|
|
|
|
method ForeignKeysForTable {foreignTable argdict} {
|
|
|
|
set result {}
|
|
set n 0
|
|
|
|
# Go through the foreign keys in the given table, looking for
|
|
# ones that refer to the primary table (if one is given), or
|
|
# for any primary keys if none is given.
|
|
my foreach row "PRAGMA foreign_key_list($foreignTable)" {
|
|
if {(![dict exists $argdict primary])
|
|
|| ([string tolower [dict get $row table]]
|
|
eq [dict get $argdict primary])} {
|
|
|
|
# Construct a dictionary for each key, translating
|
|
# SQLite names to TDBC ones and converting sequence
|
|
# numbers to 1-based indexing.
|
|
|
|
set rrow [dict create foreignTable $foreignTable \
|
|
foreignConstraintName \
|
|
?$foreignTable?[dict get $row id]]
|
|
if {[dict exists $row seq]} {
|
|
dict set rrow ordinalPosition \
|
|
[expr {1 + [dict get $row seq]}]
|
|
}
|
|
foreach {to from} {
|
|
foreignColumn from
|
|
primaryTable table
|
|
primaryColumn to
|
|
deleteAction on_delete
|
|
updateAction on_update
|
|
} {
|
|
if {[dict exists $row $from]} {
|
|
dict set rrow $to [dict get $row $from]
|
|
}
|
|
}
|
|
|
|
# Add the newly-constucted dictionary to the result list
|
|
|
|
lappend result $rrow
|
|
}
|
|
}
|
|
|
|
return $result
|
|
}
|
|
|
|
# The 'preparecall' method prepares a call to a stored procedure.
|
|
# SQLite3 does not have stored procedures, since it's an in-process
|
|
# server.
|
|
|
|
method preparecall {call} {
|
|
return -code error \
|
|
-errorcode [list TDBC FEATURE_NOT_SUPPORTED 0A000 \
|
|
SQLITE3 PREPARECALL] \
|
|
{SQLite3 does not support stored procedures}
|
|
}
|
|
|
|
# The 'begintransaction' method launches a database transaction
|
|
|
|
method begintransaction {} {
|
|
db eval {BEGIN TRANSACTION}
|
|
}
|
|
|
|
# The 'commit' method commits a database transaction
|
|
|
|
method commit {} {
|
|
db eval {COMMIT}
|
|
}
|
|
|
|
# The 'rollback' method abandons a database transaction
|
|
|
|
method rollback {} {
|
|
db eval {ROLLBACK}
|
|
}
|
|
|
|
# The 'transaction' method executes a script as a single transaction.
|
|
# We override the 'transaction' method of the base class, since SQLite3
|
|
# has a faster implementation of the same thing. (The base class's generic
|
|
# method should also work.)
|
|
# (Don't overload the base class method, because 'break', 'continue'
|
|
# and 'return' in the transaction body don't work!)
|
|
|
|
#method transaction {script} {
|
|
# uplevel 1 [list {*}[namespace code db] transaction $script]
|
|
#}
|
|
|
|
method prepare {sqlCode} {
|
|
set result [next $sqlCode]
|
|
return $result
|
|
}
|
|
|
|
method getDBhandle {} {
|
|
return [namespace which db]
|
|
}
|
|
}
|
|
|
|
#------------------------------------------------------------------------------
|
|
#
|
|
# tdbc::sqlite3::statement --
|
|
#
|
|
# Class representing a statement to execute against a SQLite3 database
|
|
#
|
|
#------------------------------------------------------------------------------
|
|
|
|
::oo::class create ::tdbc::sqlite3::statement {
|
|
|
|
superclass ::tdbc::statement
|
|
|
|
variable Params db sql
|
|
|
|
# The constructor accepts the handle to the connection and the SQL
|
|
# code for the statement to prepare. All that it does is to parse the
|
|
# statement and store it. The parse is used to support the
|
|
# 'params' and 'paramtype' methods.
|
|
|
|
constructor {connection sqlcode} {
|
|
next
|
|
set Params {}
|
|
set db [$connection getDBhandle]
|
|
set sql $sqlcode
|
|
foreach token [::tdbc::tokenize $sqlcode] {
|
|
if {[string index $token 0] in {$ : @}} {
|
|
dict set Params [string range $token 1 end] \
|
|
{type Tcl_Obj precision 0 scale 0 nullable 1 direction in}
|
|
}
|
|
}
|
|
}
|
|
|
|
# The 'resultSetCreate' method relays to the result set constructor
|
|
|
|
forward resultSetCreate ::tdbc::sqlite3::resultset create
|
|
|
|
# The 'params' method returns descriptions of the parameters accepted
|
|
# by the statement
|
|
|
|
method params {} {
|
|
return $Params
|
|
}
|
|
|
|
# The 'paramtype' method need do nothing; Sqlite3 uses manifest typing.
|
|
|
|
method paramtype args {;}
|
|
|
|
method getDBhandle {} {
|
|
return $db
|
|
}
|
|
|
|
method getSql {} {
|
|
return $sql
|
|
}
|
|
|
|
}
|
|
|
|
#-------------------------------------------------------------------------------
|
|
#
|
|
# tdbc::sqlite3::resultset --
|
|
#
|
|
# Class that represents a SQLlite result set in Tcl
|
|
#
|
|
#-------------------------------------------------------------------------------
|
|
|
|
::oo::class create ::tdbc::sqlite3::resultset {
|
|
|
|
superclass ::tdbc::resultset
|
|
|
|
# The variables of this class all have peculiar names. The reason is
|
|
# that the RunQuery method needs to execute with an activation record
|
|
# that has no local variables whose names could conflict with names
|
|
# in the SQL query. We start the variable names with hyphens because
|
|
# they can't be bind variables.
|
|
|
|
variable -set {*}{
|
|
-columns -db -needcolumns -resultArray
|
|
-results -sql -Cursor -RowCount -END
|
|
}
|
|
|
|
constructor {statement args} {
|
|
next
|
|
set -db [$statement getDBhandle]
|
|
set -sql [$statement getSql]
|
|
set -columns {}
|
|
set -results {}
|
|
${-db} trace [namespace code {my RecordStatement}]
|
|
if {[llength $args] == 0} {
|
|
|
|
# Variable substitutions are evaluated in caller's context
|
|
|
|
uplevel 1 [list ${-db} eval ${-sql} \
|
|
[namespace which -variable -resultArray] \
|
|
[namespace code {my RecordResult}]]
|
|
|
|
} elseif {[llength $args] == 1} {
|
|
|
|
# Variable substitutions are in the dictionary at [lindex $args 0].
|
|
|
|
set -paramDict [lindex $args 0]
|
|
|
|
# At this point, the activation record must contain no variables
|
|
# that might be bound within the query. All variables at this point
|
|
# begin with hyphens so that they are syntactically incorrect
|
|
# as bound variables in SQL.
|
|
|
|
unset args
|
|
unset statement
|
|
|
|
dict with -paramDict {
|
|
${-db} eval ${-sql} -resultArray {
|
|
my RecordResult
|
|
}
|
|
}
|
|
|
|
} else {
|
|
|
|
${-db} trace {}
|
|
|
|
# Too many args
|
|
|
|
return -code error \
|
|
-errorcode [list TDBC GENERAL_ERROR HY000 \
|
|
SQLITE3 WRONGNUMARGS] \
|
|
"wrong # args: should be\
|
|
[lrange [info level 0] 0 1] statement ?dictionary?"
|
|
|
|
}
|
|
${-db} trace {}
|
|
set -Cursor 0
|
|
if {${-Cursor} < [llength ${-results}]
|
|
&& [lindex ${-results} ${-Cursor}] eq {statement}} {
|
|
incr -Cursor 2
|
|
}
|
|
if {${-Cursor} < [llength ${-results}]
|
|
&& [lindex ${-results} ${-Cursor}] eq {columns}} {
|
|
incr -Cursor
|
|
set -columns [lindex ${-results} ${-Cursor}]
|
|
incr -Cursor
|
|
}
|
|
set -RowCount [${-db} changes]
|
|
}
|
|
|
|
# Record the start of a SQL statement
|
|
|
|
method RecordStatement {stmt} {
|
|
set -needcolumns 1
|
|
lappend -results statement {}
|
|
}
|
|
|
|
# Record one row of results from a query by appending it as a dictionary
|
|
# to the 'results' list. As a side effect, set 'columns' to a list
|
|
# comprising the names of the columns of the result.
|
|
|
|
method RecordResult {} {
|
|
set columns ${-resultArray(*)}
|
|
if {[info exists -needcolumns]} {
|
|
lappend -results columns $columns
|
|
unset -needcolumns
|
|
}
|
|
set dict {}
|
|
foreach key $columns {
|
|
if {[set -resultArray($key)] ne "\ufffd"} {
|
|
dict set dict $key [set -resultArray($key)]
|
|
}
|
|
}
|
|
lappend -results row $dict
|
|
}
|
|
|
|
# Advance to the next result set
|
|
|
|
method nextresults {} {
|
|
set have 0
|
|
while {${-Cursor} < [llength ${-results}]} {
|
|
if {[lindex ${-results} ${-Cursor}] eq {statement}} {
|
|
set have 1
|
|
incr -Cursor 2
|
|
break
|
|
}
|
|
incr -Cursor 2
|
|
}
|
|
if {!$have} {
|
|
set -END {}
|
|
}
|
|
if {${-Cursor} >= [llength ${-results}]} {
|
|
set -columns {}
|
|
} elseif {[lindex ${-results} ${-Cursor}] eq {columns}} {
|
|
incr -Cursor
|
|
set -columns [lindex ${-results} ${-Cursor}]
|
|
incr -Cursor
|
|
} else {
|
|
set -columns {}
|
|
}
|
|
return $have
|
|
}
|
|
|
|
method getDBhandle {} {
|
|
return ${-db}
|
|
}
|
|
|
|
# Return a list of the columns
|
|
|
|
method columns {} {
|
|
if {[info exists -END]} {
|
|
return -code error \
|
|
-errorcode {TDBC GENERAL_ERROR HY010 SQLITE3 FUNCTIONSEQ} \
|
|
"Function sequence error: result set is exhausted."
|
|
}
|
|
return ${-columns}
|
|
}
|
|
|
|
# Return the next row of the result set as a list
|
|
|
|
method nextlist var {
|
|
|
|
upvar 1 $var row
|
|
|
|
if {[info exists -END]} {
|
|
return -code error \
|
|
-errorcode {TDBC GENERAL_ERROR HY010 SQLITE3 FUNCTIONSEQ} \
|
|
"Function sequence error: result set is exhausted."
|
|
}
|
|
if {${-Cursor} >= [llength ${-results}]
|
|
|| [lindex ${-results} ${-Cursor}] ne {row}} {
|
|
return 0
|
|
} else {
|
|
set row {}
|
|
incr -Cursor
|
|
set d [lindex ${-results} ${-Cursor}]
|
|
incr -Cursor
|
|
foreach key ${-columns} {
|
|
if {[dict exists $d $key]} {
|
|
lappend row [dict get $d $key]
|
|
} else {
|
|
lappend row {}
|
|
}
|
|
}
|
|
}
|
|
return 1
|
|
}
|
|
|
|
# Return the next row of the result set as a dict
|
|
|
|
method nextdict var {
|
|
|
|
upvar 1 $var row
|
|
|
|
if {[info exists -END]} {
|
|
return -code error \
|
|
-errorcode {TDBC GENERAL_ERROR HY010 SQLITE3 FUNCTIONSEQ} \
|
|
"Function sequence error: result set is exhausted."
|
|
}
|
|
if {${-Cursor} >= [llength ${-results}]
|
|
|| [lindex ${-results} ${-Cursor}] ne {row}} {
|
|
return 0
|
|
} else {
|
|
incr -Cursor
|
|
set row [lindex ${-results} ${-Cursor}]
|
|
incr -Cursor
|
|
}
|
|
return 1
|
|
}
|
|
|
|
# Return the number of rows affected by a statement
|
|
|
|
method rowcount {} {
|
|
if {[info exists -END]} {
|
|
return -code error \
|
|
-errorcode {TDBC GENERAL_ERROR HY010 SQLITE3 FUNCTIONSEQ} \
|
|
"Function sequence error: result set is exhausted."
|
|
}
|
|
return ${-RowCount}
|
|
}
|
|
|
|
}
|