Use CREATE TABLE IF NOT EXISTS when append=true, bump to v1.5.0

When append=true (the default), use CREATE TABLE IF NOT EXISTS to
silently skip table creation if the table already exists. This avoids
noisy warnings on subsequent loads to the same table.

New features in v1.5.0:
- coltypes parameter for custom column type overrides (#225)
- auto_increment_primary_key_name parameter (#230)
- CREATE TABLE IF NOT EXISTS for append mode
- Named column inserts for better compatibility

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: quinnj

Project.toml

@@ -1,7 +1,7 @@
 name = "MySQL"
 uuid = "39abe10b-433b-5dbd-92d4-e302a9df00cd"
 author = ["quinnj"]
-version = "1.4.7"
+version = "1.5.0"
 
 [deps]
 DBInterface = "a10d1c49-ce27-4219-8d33-6db1a4562965"

src/load.jl

@@ -87,8 +87,10 @@ function load(itr, conn::Connection, name::AbstractString="mysql_"*Random.randst
     if quoteidentifiers
         name = quoteid(name)
     end
+    # Use IF NOT EXISTS when appending to avoid warnings on subsequent loads
+    createclause = append ? "CREATE TABLE IF NOT EXISTS" : "CREATE TABLE"
     try
-        createtable(conn, name, sch; quoteidentifiers=quoteidentifiers, debug=debug, kw...)
+        createtable(conn, name, sch; quoteidentifiers=quoteidentifiers, debug=debug, createtableclause=createclause, kw...)
     catch e
         @warn "error creating table" (e, catch_backtrace())
     end