diff --git a/Cargo.lock b/Cargo.lock
index 8d942d761..d37844800 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -553,6 +553,12 @@ dependencies = [
  "num-traits",
 ]
 
+[[package]]
+name = "atoi_simd"
+version = "0.15.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fc41b65e01b6851bdcd2d741824e6b310d571396bf3915e31e4792034ee65126"
+
 [[package]]
 name = "autocfg"
 version = "1.1.0"
@@ -1542,15 +1548,16 @@ dependencies = [
 
 [[package]]
 name = "ed25519-dalek"
-version = "2.0.0"
+version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7277392b266383ef8396db7fdeb1e77b6c52fed775f5df15bb24f35b72156980"
+checksum = "1f628eaec48bfd21b865dc2950cfa014450c01d2fa2b69a86c2fd5844ec523c0"
 dependencies = [
  "curve25519-dalek",
  "ed25519",
  "serde",
  "sha2",
  "signature",
+ "subtle",
  "zeroize",
 ]
 
@@ -1695,9 +1702,9 @@ checksum = "25cbce373ec4653f1a01a31e8a5e5ec0c622dc27ff9c4e6606eefef5cbbed4a5"
 
 [[package]]
 name = "fiat-crypto"
-version = "0.2.4"
+version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "53a56f0780318174bad1c127063fd0c5fdfb35398e3cd79ffaab931a6c79df80"
+checksum = "27573eac26f4dd11e2b1916c3fe1baa56407c83c71a773a8ba17ec0bca03b6b7"
 
 [[package]]
 name = "file-format"
@@ -2544,15 +2551,6 @@ version = "1.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "db13adb97ab515a3691f56e4dbab09283d0b86cb45abd991d8634a9d6f501760"
 
-[[package]]
-name = "lexical"
-version = "6.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c7aefb36fd43fef7003334742cbf77b243fcd36418a1d1bdd480d613a67968f6"
-dependencies = [
- "lexical-core",
-]
-
 [[package]]
 name = "lexical-core"
 version = "0.8.5"
@@ -3180,25 +3178,6 @@ dependencies = [
  "futures",
 ]
 
-[[package]]
-name = "parquet2"
-version = "0.17.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "579fe5745f02cef3d5f236bfed216fd4693e49e4e920a13475c6132233283bce"
-dependencies = [
- "async-stream",
- "brotli",
- "flate2",
- "futures",
- "lz4",
- "parquet-format-safe",
- "seq-macro",
- "snap",
- "streaming-decompression",
- "xxhash-rust",
- "zstd 0.12.4",
-]
-
 [[package]]
 name = "password-hash"
 version = "0.4.2"
@@ -3419,9 +3398,9 @@ checksum = "14e6ab3f592e6fb464fc9712d8d6e6912de6473954635fd76a589d832cffcbb0"
 
 [[package]]
 name = "polars"
-version = "0.34.2"
+version = "0.35.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "40db657cc67a8dd9fe4b40db5b73027f5f224623545597e1930cbbb9c05b1de5"
+checksum = "987f70ba422ed3f6bb566d4a02f5ad35f2cabcdc7f09705f9340a5ee2ad59215"
 dependencies = [
  "getrandom",
  "polars-core",
@@ -3435,30 +3414,31 @@ dependencies = [
 
 [[package]]
 name = "polars-arrow"
-version = "0.34.2"
+version = "0.35.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d1e50c63db77f846ac5119477422f0156f0a1826ceaae7d921f9a6d5ea5f7ca3"
+checksum = "682c24cbb6fc05882c0112da75ec037d0afe88241c3778c074d61211bbf063bf"
 dependencies = [
  "ahash 0.8.6",
  "arrow-format",
- "base64",
+ "atoi_simd",
  "bytemuck",
  "chrono",
  "dyn-clone",
  "either",
  "ethnum",
- "fallible-streaming-iterator",
+ "fast-float",
  "foreign_vec",
  "futures",
  "getrandom",
  "hashbrown 0.14.2",
- "lexical-core",
+ "itoa",
  "lz4",
  "multiversion",
  "num-traits",
- "parquet2",
  "polars-error",
+ "polars-utils",
  "rustc_version",
+ "ryu",
  "simdutf8",
  "streaming-iterator",
  "strength_reduce",
@@ -3467,9 +3447,9 @@ dependencies = [
 
 [[package]]
 name = "polars-core"
-version = "0.34.2"
+version = "0.35.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cdfb622b8ca81b4614c64d95e7590d6e0571d7d398b5ad595c1abc4412abe714"
+checksum = "0fcbe0039cad625b5775c8f8e0dfdd204a71968959ae006322083b3c244475bf"
 dependencies = [
  "ahash 0.8.6",
  "bitflags 2.4.1",
@@ -3498,12 +3478,11 @@ dependencies = [
 
 [[package]]
 name = "polars-error"
-version = "0.34.2"
+version = "0.35.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4b6480520ebde0b20935b600483b865513891e36c04942cebdd19e4f338257b4"
+checksum = "d1e73784f0357111c71a6f0f765ec91a5f1487bc5cdd9d41e54f81fd53e06e73"
 dependencies = [
  "arrow-format",
- "parquet2",
  "regex",
  "simdutf8",
  "thiserror",
@@ -3511,20 +3490,19 @@ dependencies = [
 
 [[package]]
 name = "polars-io"
-version = "0.34.2"
+version = "0.35.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "666466a3b151047c76d99b4e4e5f5438895ef97848008cf49b06df8e3d2d395a"
+checksum = "9080fcc2777fcdfb859cfd45029a90096089bd0da15f4f022c23f8276bf5268c"
 dependencies = [
  "ahash 0.8.6",
  "async-trait",
+ "atoi_simd",
  "bytes",
  "chrono",
  "fast-float",
  "futures",
  "home",
  "itoa",
- "lexical",
- "lexical-core",
  "memchr",
  "memmap2",
  "num-traits",
@@ -3534,6 +3512,7 @@ dependencies = [
  "polars-core",
  "polars-error",
  "polars-json",
+ "polars-parquet",
  "polars-time",
  "polars-utils",
  "rayon",
@@ -3549,9 +3528,9 @@ dependencies = [
 
 [[package]]
 name = "polars-json"
-version = "0.34.2"
+version = "0.35.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "24451d2647a9bd51283cc946509c23bac27130565daa5103a156c8507b85b5a3"
+checksum = "4d90ab8b514897140841dcf337810d1ea5778ac260fd561896365445e595275c"
 dependencies = [
  "ahash 0.8.6",
  "chrono",
@@ -3570,9 +3549,9 @@ dependencies = [
 
 [[package]]
 name = "polars-lazy"
-version = "0.34.2"
+version = "0.35.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "07e1c2da1ca20106f80d9510090344e7311fd1dcfd6e6b65031e10606c0958c7"
+checksum = "f20c79e04461bc3fa085c552c7c18919732ab6cde4e5da9f7b52b48d269b0f11"
 dependencies = [
  "ahash 0.8.6",
  "bitflags 2.4.1",
@@ -3594,9 +3573,9 @@ dependencies = [
 
 [[package]]
 name = "polars-ops"
-version = "0.34.2"
+version = "0.35.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0fe2d37a6a3ef358499d43aecee80740e62dd44e6cfe7a9c4aa0b8db88de8292"
+checksum = "82ad422e9bb854d275f8d700e0f2bbf39cd8f71709a24aa40e54f32ac7410199"
 dependencies = [
  "ahash 0.8.6",
  "argminmax",
@@ -3616,11 +3595,37 @@ dependencies = [
  "version_check",
 ]
 
+[[package]]
+name = "polars-parquet"
+version = "0.35.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e9d73479f136c036d1ba87d7ea2e9ac89c86ee2c16ab0020a6e15edbb3581135"
+dependencies = [
+ "ahash 0.8.6",
+ "async-stream",
+ "base64",
+ "brotli",
+ "ethnum",
+ "flate2",
+ "futures",
+ "lz4",
+ "num-traits",
+ "parquet-format-safe",
+ "polars-arrow",
+ "polars-error",
+ "polars-utils",
+ "seq-macro",
+ "simdutf8",
+ "snap",
+ "streaming-decompression",
+ "zstd 0.13.0",
+]
+
 [[package]]
 name = "polars-pipe"
-version = "0.34.2"
+version = "0.35.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f6aa050d529be01617f54bc60658149da76f97dbea9fdac3c9d60b811f64a2ba"
+checksum = "869f372f023554f8a66fc06060709993b92004f2157188d467741c8fcdb226ff"
 dependencies = [
  "crossbeam-channel",
  "crossbeam-queue",
@@ -3641,9 +3646,9 @@ dependencies = [
 
 [[package]]
 name = "polars-plan"
-version = "0.34.2"
+version = "0.35.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c47e5d62d8f612aab61a6331d04c5c95c9ff301106d8b91131c8833b4ef3def6"
+checksum = "af139995be30bb6469fdff78669be5da6aad9ae7ec1ec3e538f34ebeaa8b0fb4"
 dependencies = [
  "ahash 0.8.6",
  "bytemuck",
@@ -3653,6 +3658,7 @@ dependencies = [
  "polars-core",
  "polars-io",
  "polars-ops",
+ "polars-parquet",
  "polars-time",
  "polars-utils",
  "rayon",
@@ -3664,9 +3670,9 @@ dependencies = [
 
 [[package]]
 name = "polars-row"
-version = "0.34.2"
+version = "0.35.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f05d6544f7d6065fcaa93bc69aac0532ce09aab4f81ec03c9a78dd901bb0c05b"
+checksum = "7ae5284d603c3111c217d2451e1b62578eebf2f30d49c32e03790dd4f9cc21ad"
 dependencies = [
  "polars-arrow",
  "polars-error",
@@ -3675,9 +3681,9 @@ dependencies = [
 
 [[package]]
 name = "polars-sql"
-version = "0.34.2"
+version = "0.35.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "77f65f9c8bfe7f0b2c08c38c79b92ec4ddaf213fc424d94a6272ed7b2d83987f"
+checksum = "9357cc60db55c2a407230b42e3ca67ef8495513460ade6f368f48fdd4d2a2505"
 dependencies = [
  "polars-arrow",
  "polars-core",
@@ -3692,9 +3698,9 @@ dependencies = [
 
 [[package]]
 name = "polars-time"
-version = "0.34.2"
+version = "0.35.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3763af36aeeb85ef083f11c43bc28c5b6222e2aae039c5118d916bc855f2b5b9"
+checksum = "cdbd4ad82122f9fa8bebfc40dc41183e311b0a8ce2e58f2a48800b5e1136d41e"
 dependencies = [
  "atoi",
  "chrono",
@@ -3711,13 +3717,14 @@ dependencies = [
 
 [[package]]
 name = "polars-utils"
-version = "0.34.2"
+version = "0.35.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "55d2c038ff67e4eb6019682c3f66d83f744e285de9c28e816109a61bace824cd"
+checksum = "3075dda9bfecbdcd3d721c6ed4f15f00edf58acba3d5e7711e6f1a9cedf46444"
 dependencies = [
  "ahash 0.8.6",
  "bytemuck",
  "hashbrown 0.14.2",
+ "indexmap 2.1.0",
  "num-traits",
  "once_cell",
  "polars-error",
@@ -4296,6 +4303,26 @@ dependencies = [
  "bitflags 1.3.2",
 ]
 
+[[package]]
+name = "ref-cast"
+version = "1.0.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "acde58d073e9c79da00f2b5b84eed919c8326832648a5b109b3fce1bb1175280"
+dependencies = [
+ "ref-cast-impl",
+]
+
+[[package]]
+name = "ref-cast-impl"
+version = "1.0.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7f7473c2cfcf90008193dd0e3e16599455cb601a9fce322b5bb55de799664925"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.39",
+]
+
 [[package]]
 name = "regex"
 version = "1.10.2"
@@ -4515,9 +4542,9 @@ dependencies = [
 
 [[package]]
 name = "rustls"
-version = "0.21.8"
+version = "0.21.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "446e14c5cda4f3f30fe71863c34ec70f5ac79d6087097ad0bb433e1be5edf04c"
+checksum = "629648aced5775d558af50b2b4c7b02983a04b312126d45eeead26e7caa498b9"
 dependencies = [
  "log",
  "ring",
@@ -4797,24 +4824,26 @@ dependencies = [
 
 [[package]]
 name = "signature"
-version = "2.0.0"
+version = "2.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8fe458c98333f9c8152221191a77e2a44e8325d0193484af2e9421a53019e57d"
+checksum = "77549399552de45a898a580c1b41d445bf730df867cc44e6c0233bbc4b8329de"
 dependencies = [
  "digest",
+ "rand_core",
 ]
 
 [[package]]
 name = "simd-json"
-version = "0.12.0"
+version = "0.13.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f0f07a84c7456b901b8dd2c1d44caca8b0fd2c2616206ee5acc9d9da61e8d9ec"
+checksum = "e5a3720326b20bf5b95b72dbbd133caae7e0dcf71eae8f6e6656e71a7e5c9aaa"
 dependencies = [
  "ahash 0.8.6",
  "getrandom",
  "halfbrown",
  "lexical-core",
  "once_cell",
+ "ref-cast",
  "serde",
  "serde_json",
  "simdutf8",
@@ -4937,9 +4966,9 @@ dependencies = [
 
 [[package]]
 name = "sqlparser"
-version = "0.38.0"
+version = "0.39.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0272b7bb0a225320170c99901b4b5fb3a4384e255a7f2cc228f61e2ba3893e75"
+checksum = "743b4dc2cbde11890ccb254a8fc9d537fa41b36da00de2a1c5e9848c9bc42bd7"
 dependencies = [
  "log",
 ]
@@ -5577,9 +5606,9 @@ dependencies = [
 
 [[package]]
 name = "value-trait"
-version = "0.6.1"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "09a5b6c8ceb01263b969cac48d4a6705134d490ded13d889e52c0cfc80c6945e"
+checksum = "ea87257cfcbedcb9444eda79c59fdfea71217e6305afee8ee33f500375c2ac97"
 dependencies = [
  "float-cmp",
  "halfbrown",
@@ -6007,9 +6036,9 @@ dependencies = [
 
 [[package]]
 name = "zeroize"
-version = "1.6.1"
+version = "1.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "12a3946ecfc929b583800f4629b6c25b88ac6e92a40ea5670f77112a85d40a8b"
+checksum = "525b4ec142c6b68a2d10f01f7bbf6755599ca3f81ea53b8431b7dd348f5fdb2d"
 
 [[package]]
 name = "zip"
@@ -6050,15 +6079,6 @@ dependencies = [
  "zstd-safe 5.0.2+zstd.1.5.2",
 ]
 
-[[package]]
-name = "zstd"
-version = "0.12.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1a27595e173641171fc74a1232b7b1c7a7cb6e18222c11e9dfb9888fa424c53c"
-dependencies = [
- "zstd-safe 6.0.6",
-]
-
 [[package]]
 name = "zstd"
 version = "0.13.0"
@@ -6078,16 +6098,6 @@ dependencies = [
  "zstd-sys",
 ]
 
-[[package]]
-name = "zstd-safe"
-version = "6.0.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ee98ffd0b48ee95e6c5168188e44a54550b1564d9d530ee21d5f0eaed1069581"
-dependencies = [
- "libc",
- "zstd-sys",
-]
-
 [[package]]
 name = "zstd-safe"
 version = "7.0.0"
diff --git a/Cargo.toml b/Cargo.toml
index c1e66c1fb..198fb198c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -137,7 +137,7 @@ mlua = { version = "0.9", features = [
 num_cpus = "1"
 odht = "0.3"
 phf = { version = "0.11", features = ["macros"], optional = true }
-polars = { version = "0.34", features = [
+polars = { version = "0.35", features = [
     "lazy",
     "streaming",
     "object",
@@ -150,6 +150,7 @@ polars = { version = "0.34", features = [
     "ipc",
     "performant",
     "cse",
+    "dtype-categorical"
 ], optional = true }
 pyo3 = { version = "0.20", features = ["auto-initialize"], optional = true }
 qsv-dateparser = "0.10"
diff --git a/src/cmd/joinp.rs b/src/cmd/joinp.rs
index 3b2124d27..d89db91cc 100644
--- a/src/cmd/joinp.rs
+++ b/src/cmd/joinp.rs
@@ -451,7 +451,7 @@ impl JoinStruct {
         let join_shape = results_df.shape();
 
         CsvWriter::new(&mut out_writer)
-            .has_header(true)
+            .include_header(true)
             .with_separator(self.delim)
             .with_datetime_format(self.datetime_format)
             .with_date_format(self.date_format)
diff --git a/src/cmd/sqlp.rs b/src/cmd/sqlp.rs
index 569421ad3..d5fe14f15 100644
--- a/src/cmd/sqlp.rs
+++ b/src/cmd/sqlp.rs
@@ -6,8 +6,8 @@ Polars SQL is a SQL dialect, converting SQL queries to fast Polars LazyFrame exp
 (see https://pola-rs.github.io/polars-book/user-guide/sql/intro/)
 
 For a list of SQL functions and keywords supported by Polars SQL, see
-https://github.com/pola-rs/polars/blob/rs-0.34.0/crates/polars-sql/src/functions.rs
-https://github.com/pola-rs/polars/blob/rs-0.34.0/crates/polars-sql/src/keywords.rs and
+https://github.com/pola-rs/polars/blob/rs-0.35.0/crates/polars-sql/src/functions.rs
+https://github.com/pola-rs/polars/blob/rs-0.35.0/crates/polars-sql/src/keywords.rs and
 https://github.com/pola-rs/polars/issues/7227
 
 Returns the shape of the query result (number of rows, number of columns) to stderr.
@@ -23,6 +23,8 @@ Example queries:
 
   qsv sqlp data.csv data2.csv 'select * from data join data2 on data.colname = data2.colname'
 
+  qsv sqlp data.csv data2.csv 'SELECT col1 FROM data WHERE col1 IN (SELECT col2 FROM data2)'
+
   qsv sqlp data1.csv data2.csv 'SELECT * FROM data1 UNION ALL BY NAME SELECT * FROM data2'
 
   qsv sqlp tbl_a.csv tbl_b.csv tbl_c.csv "SELECT * FROM tbl_a \