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Add Synapse dedicated pool compatibility for listTables #46

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Add Synapse dedicated pool compatibility for listTables #46

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31 changes: 27 additions & 4 deletions R/utils.R
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Original file line number Diff line number Diff line change
Expand Up @@ -157,11 +157,34 @@ listTables <- function(con, schema = NULL) {

if (is.null(schema)) {
if (dbms(con) == "sql server") {
# return temp tables
# Check if temp table emulation is enabled (for Synapse dedicated pools)
tempEmulationSchema <- getOption("sqlRenderTempEmulationSchema")
if (!is.null(tempEmulationSchema) && nchar(tempEmulationSchema) > 0) {
# Synapse with temp table emulation - query the emulation schema
# Temp tables are stored as permanent tables with ## prefix
sql <- glue::glue_sql(
"SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA = {tempEmulationSchema}",
.con = con
)
temp_tables <- tryCatch({
DBI::dbGetQuery(con, sql)[[1]] %>%
stringr::str_subset("^##") %>%
stringr::str_remove("^##")
}, error = function(e) character(0))
return(temp_tables)
}

# Standard SQL Server - return temp tables from tempdb
# tempdb.sys.objects
temp_tables <- DBI::dbGetQuery(con, "select * from tempdb..sysobjects")[[1]] %>%
stringr::str_remove("_________________________.*$") %>%
stringr::str_remove("^#+")
temp_tables <- tryCatch({
DBI::dbGetQuery(con, "select * from tempdb..sysobjects")[[1]] %>%
stringr::str_remove("_________________________.*$") %>%
stringr::str_remove("^#+")
}, error = function(e) {
# If tempdb query fails (e.g., Synapse without emulation schema set),
# return empty character vector
character(0)
})

return(temp_tables)

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