delete_flob | R Documentation |
Delete a flob from a SQLite database.
delete_flob(column_name, table_name, key, conn)
column_name |
A string of the name of the BLOB column. |
table_name |
A string of the name of the existing table. |
key |
A data.frame whose columns and values are used to filter the
table to a single row (this in combination with the |
conn |
A SQLite connection object. |
An invisible copy of the deleted flob.
flob <- flobr::flob_obj conn <- DBI::dbConnect(RSQLite::SQLite(), ":memory:") DBI::dbWriteTable(conn, "Table1", data.frame(IntColumn = c(1L, 2L))) key <- data.frame(IntColumn = 2L) write_flob(flob, "BlobColumn", "Table1", key, conn, exists = FALSE) DBI::dbReadTable(conn, "Table1") delete_flob("BlobColumn", "Table1", key, conn) DBI::dbReadTable(conn, "Table1") DBI::dbDisconnect(conn)
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