diff --git a/Cargo.lock b/Cargo.lock
index 7f1389eadc..ad26abc63d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -46,7 +46,7 @@ version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bf6ccdb167abbf410dcb915cabd428929d7f6a04980b54a11f26a39f1c7f7107"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "const-random",
  "getrandom 0.2.7",
  "once_cell",
@@ -70,7 +70,7 @@ checksum = "befdff0b4683a0824fc8719ce639a252d9d62cd89c8d0004c39e2417128c1eb8"
 dependencies = [
  "axum 0.6.1",
  "bytes",
- "cfg-if",
+ "cfg-if 1.0.0",
  "http",
  "indexmap",
  "schemars",
@@ -650,7 +650,7 @@ checksum = "cab84319d616cfb654d03394f38ab7e6f0919e181b1b57e1fd15e7fb4077d9a7"
 dependencies = [
  "addr2line",
  "cc",
- "cfg-if",
+ "cfg-if 1.0.0",
  "libc",
  "miniz_oxide",
  "object",
@@ -805,7 +805,7 @@ dependencies = [
  "arrayref",
  "arrayvec 0.7.2",
  "cc",
- "cfg-if",
+ "cfg-if 1.0.0",
  "constant_time_eq",
  "digest",
 ]
@@ -916,6 +916,12 @@ version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c1db59621ec70f09c5e9b597b220c7a2b43611f4710dc03ceb8748637775692c"
 
+[[package]]
+name = "cactus"
+version = "1.0.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cf034765b7d19a011c6d619e880582bf95e8186b580e6fab56589872dd87dcf5"
+
 [[package]]
 name = "camino"
 version = "1.1.1"
@@ -942,7 +948,7 @@ checksum = "4acbb09d9ee8e23699b9634375c72795d095bf268439da88562cf9b501f181fa"
 dependencies = [
  "camino",
  "cargo-platform",
- "semver",
+ "semver 1.0.14",
  "serde",
  "serde_json",
 ]
@@ -1018,12 +1024,32 @@ dependencies = [
  "nom",
 ]
 
+[[package]]
+name = "cfg-if"
+version = "0.1.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
+
 [[package]]
 name = "cfg-if"
 version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "cfgrammar"
+version = "0.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bf74ea341ae8905eac9a234b6a5a845e118c25bbbdecf85ec77431a8b3bfa0be"
+dependencies = [
+ "indexmap",
+ "lazy_static",
+ "num-traits",
+ "regex",
+ "serde",
+ "vob",
+]
+
 [[package]]
 name = "chrono"
 version = "0.4.22"
@@ -1616,7 +1642,7 @@ version = "1.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b540bd8bc810d3885c6ea91e2018302f68baba2129ab3e88f32389ee9370880d"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
 ]
 
 [[package]]
@@ -1697,7 +1723,7 @@ version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2801af0d36612ae591caa9568261fddce32ce6e08a7275ea334a06a4ad021a2c"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "crossbeam-channel",
  "crossbeam-deque",
  "crossbeam-epoch",
@@ -1711,7 +1737,7 @@ version = "0.5.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c2dd04ddaf88237dc3b8d8f9a3c1004b506b54b3313403944054d23c0870c521"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "crossbeam-utils",
 ]
 
@@ -1721,7 +1747,7 @@ version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "715e8152b692bba2d374b53d4875445368fdf21a94751410af607a5ac677d1fc"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "crossbeam-epoch",
  "crossbeam-utils",
 ]
@@ -1733,7 +1759,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "045ebe27666471bb549370b4b0b3e51b07f56325befa4284db65fc89c02511b1"
 dependencies = [
  "autocfg",
- "cfg-if",
+ "cfg-if 1.0.0",
  "crossbeam-utils",
  "memoffset",
  "once_cell",
@@ -1746,7 +1772,7 @@ version = "0.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1cd42583b04998a5363558e5f9291ee5a5ff6b49944332103f251e7479a82aa7"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "crossbeam-utils",
 ]
 
@@ -1756,7 +1782,7 @@ version = "0.8.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "51887d4adc7b564537b15adcfb307936f8075dfcd5f00dde9a9f1d29383682bc"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "once_cell",
 ]
 
@@ -1864,7 +1890,7 @@ version = "5.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "907076dfda823b0b36d2a1bb5f90c96660a5bbcd7729e10727f07858f22c4edc"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "hashbrown",
  "lock_api",
  "once_cell",
@@ -2135,7 +2161,7 @@ version = "2.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b98cf8ebf19c3d1b223e151f99a4f9f0690dca41414773390fc824184ac833e1"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "dirs-sys-next",
 ]
 
@@ -2173,7 +2199,7 @@ version = "1.0.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "53ecafc952c4528d9b51a458d1a8904b81783feff9fde08ab6ed2545ff396872"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "libc",
  "socket2",
  "winapi",
@@ -2224,7 +2250,7 @@ version = "0.8.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9852635589dc9f9ea1b6fe9f05b50ef208c85c834a562f0c6abb1c475736ec2b"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
 ]
 
 [[package]]
@@ -2233,6 +2259,26 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c34f04666d835ff5d62e058c3995147c06f42fe86ff053337632bca83e42702d"
 
+[[package]]
+name = "enum-iterator"
+version = "1.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "45a0ac4aeb3a18f92eaf09c6bb9b3ac30ff61ca95514fc58cbead1c9a6bf5401"
+dependencies = [
+ "enum-iterator-derive",
+]
+
+[[package]]
+name = "enum-iterator-derive"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "828de45d0ca18782232dfb8f3ea9cc428e8ced380eb26a520baaacfc70de39ce"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "enum_dispatch"
 version = "0.3.8"
@@ -2340,9 +2386,21 @@ version = "3.0.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e11dcc7e4d79a8c89b9ab4c6f5c30b1fc4a83c420792da3542fd31179ed5f517"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "rustix",
- "windows-sys",
+ "windows-sys 0.36.1",
+]
+
+[[package]]
+name = "filetime"
+version = "0.2.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4e884668cd0c7480504233e951174ddc3b382f7c2666e3b7310b5c4e7b0c37f9"
+dependencies = [
+ "cfg-if 1.0.0",
+ "libc",
+ "redox_syscall 0.2.16",
+ "windows-sys 0.42.0",
 ]
 
 [[package]]
@@ -2664,13 +2722,22 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "getopts"
+version = "0.2.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "14dbbfd5c71d70241ecf9e6f13737f7b5ce823821063188d7e46c41d371eebd5"
+dependencies = [
+ "unicode-width",
+]
+
 [[package]]
 name = "getrandom"
 version = "0.1.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8fc3cb4d91f53b50155bdcfd23f6a4c39ae1969c2ae85982b135750cccaf5fce"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "libc",
  "wasi 0.9.0+wasi-snapshot-preview1",
 ]
@@ -2681,7 +2748,7 @@ version = "0.2.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4eb1a864a501629691edf6c15a593b7a51eebaa1e8468e9ddc623de7c9b58ec6"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "js-sys",
  "libc",
  "wasi 0.11.0+wasi-snapshot-preview1",
@@ -2993,7 +3060,7 @@ version = "0.1.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7a5bbe824c507c5da5956355e86a746d82e0e1464f65d862cc5e71da70e94b2c"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
 ]
 
 [[package]]
@@ -3237,7 +3304,7 @@ version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "efbc0f03f9a775e9f6aed295c6a1ba2253c5757a9e03d55c6caa46a681abcddd"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "winapi",
 ]
 
@@ -3280,7 +3347,7 @@ version = "0.4.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "abb12e687cfb44aa40f41fc3978ef76448f9b6038cad6aef4259d3c095a2382e"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
 ]
 
 [[package]]
@@ -3308,6 +3375,59 @@ dependencies = [
  "tokio",
 ]
 
+[[package]]
+name = "lrlex"
+version = "0.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "22b832738fbfa58ad036580929e973b3b6bd31c6d6c7f18f6b5ea7b626675c85"
+dependencies = [
+ "getopts",
+ "lazy_static",
+ "lrpar",
+ "num-traits",
+ "regex",
+ "serde",
+ "try_from",
+ "vergen",
+]
+
+[[package]]
+name = "lrpar"
+version = "0.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2f270b952b07995fe874b10a5ed7dd28c80aa2130e37a7de7ed667d034e0a521"
+dependencies = [
+ "bincode 1.3.3",
+ "cactus",
+ "cfgrammar",
+ "filetime",
+ "indexmap",
+ "lazy_static",
+ "lrtable",
+ "num-traits",
+ "packedvec",
+ "regex",
+ "serde",
+ "static_assertions",
+ "vergen",
+ "vob",
+]
+
+[[package]]
+name = "lrtable"
+version = "0.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a854115c6a10772ac154261592b082436abc869c812575cadcf9d7ceda8eff0b"
+dependencies = [
+ "cfgrammar",
+ "fnv",
+ "num-traits",
+ "serde",
+ "sparsevec",
+ "static_assertions",
+ "vob",
+]
+
 [[package]]
 name = "lru"
 version = "0.8.1"
@@ -3597,7 +3717,7 @@ dependencies = [
  "libc",
  "log",
  "wasi 0.11.0+wasi-snapshot-preview1",
- "windows-sys",
+ "windows-sys 0.36.1",
 ]
 
 [[package]]
@@ -3646,7 +3766,7 @@ dependencies = [
  "once_cell",
  "parking_lot",
  "quanta",
- "rustc_version",
+ "rustc_version 0.4.0",
  "scheduled-thread-pool",
  "skeptic",
  "smallvec",
@@ -3816,7 +3936,7 @@ checksum = "9f866317acbd3a240710c63f065ffb1e4fd466259045ccb504130b7f668f35c6"
 dependencies = [
  "bitflags",
  "cc",
- "cfg-if",
+ "cfg-if 1.0.0",
  "libc",
  "memoffset",
 ]
@@ -3828,7 +3948,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "195cdbc1741b8134346d515b3a56a1c94b0912758009cfd53f99ea0f57b065fc"
 dependencies = [
  "bitflags",
- "cfg-if",
+ "cfg-if 1.0.0",
  "libc",
  "memoffset",
 ]
@@ -4165,6 +4285,16 @@ version = "6.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9ff7415e9ae3fff1225851df9e0d9e4e5479f947619774677a63572e55e80eff"
 
+[[package]]
+name = "packedvec"
+version = "1.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bde3c690ec20e4a2b4fb46f0289a451181eb50011a1e2acc8d85e2fde9062a45"
+dependencies = [
+ "num-traits",
+ "serde",
+]
+
 [[package]]
 name = "page_size"
 version = "0.4.2"
@@ -4198,13 +4328,13 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "09a279cbf25cb0757810394fbc1e359949b59e348145c643a939a525692e6929"
 dependencies = [
  "backtrace",
- "cfg-if",
+ "cfg-if 1.0.0",
  "libc",
  "petgraph",
  "redox_syscall 0.2.16",
  "smallvec",
  "thread-id",
- "windows-sys",
+ "windows-sys 0.36.1",
 ]
 
 [[package]]
@@ -4558,7 +4688,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ab4609a838d88b73d8238967b60dd115cc08d38e2bbaf51ee1e4b695f89122e2"
 dependencies = [
  "autocfg",
- "cfg-if",
+ "cfg-if 1.0.0",
  "libc",
  "log",
  "wepoll-ffi",
@@ -4697,6 +4827,27 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "promql"
+version = "0.1.0"
+dependencies = [
+ "common-error",
+ "promql-parser",
+ "snafu",
+]
+
+[[package]]
+name = "promql-parser"
+version = "0.0.1"
+source = "git+https://github.com/GreptimeTeam/promql-parser.git?rev=71d8a90#71d8a90979304a7f128b3125f37a209384a81051"
+dependencies = [
+ "cfgrammar",
+ "lazy_static",
+ "lrlex",
+ "lrpar",
+ "regex",
+]
+
 [[package]]
 name = "prost"
 version = "0.9.0"
@@ -5237,7 +5388,7 @@ version = "0.18.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f6d5f2436026b4f6e79dc829837d467cc7e9a55ee40e750d716713540715a2df"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "ordered-multimap",
 ]
 
@@ -5264,13 +5415,22 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
 
+[[package]]
+name = "rustc_version"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f0dfe2087c51c460008730de8b57e6a320782fbfb312e1f4d520e6c6fae155ee"
+dependencies = [
+ "semver 0.11.0",
+]
+
 [[package]]
 name = "rustc_version"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bfa0f585226d2e68097d4f95d113b15b83a82e819ab25717ec0590d9584ef366"
 dependencies = [
- "semver",
+ "semver 1.0.14",
 ]
 
 [[package]]
@@ -5284,7 +5444,7 @@ dependencies = [
  "io-lifetimes",
  "libc",
  "linux-raw-sys",
- "windows-sys",
+ "windows-sys 0.36.1",
 ]
 
 [[package]]
@@ -5352,7 +5512,7 @@ version = "0.0.0"
 source = "git+https://github.com/discord9/RustPython?rev=183e8dab#183e8dabe0027e31630368e36c6be83b5f9cb3f8"
 dependencies = [
  "ascii",
- "cfg-if",
+ "cfg-if 1.0.0",
  "hexf-parse",
  "lexical-parse-float",
  "libc",
@@ -5469,7 +5629,7 @@ dependencies = [
  "ascii",
  "base64",
  "blake2",
- "cfg-if",
+ "cfg-if 1.0.0",
  "crc32fast",
  "crossbeam-utils",
  "csv-core",
@@ -5535,7 +5695,7 @@ dependencies = [
  "bitflags",
  "bstr",
  "caseless",
- "cfg-if",
+ "cfg-if 1.0.0",
  "chrono",
  "crossbeam-utils",
  "exitcode",
@@ -5566,7 +5726,7 @@ dependencies = [
  "paste",
  "rand 0.8.5",
  "result-like",
- "rustc_version",
+ "rustc_version 0.4.0",
  "rustpython-ast",
  "rustpython-codegen",
  "rustpython-common",
@@ -5611,7 +5771,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1d1cd5ae51d3f7bf65d7969d579d502168ef578f289452bd8ccc91de28fda20e"
 dependencies = [
  "bitflags",
- "cfg-if",
+ "cfg-if 1.0.0",
  "clipboard-win",
  "dirs-next",
  "fd-lock",
@@ -5708,7 +5868,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "88d6731146462ea25d9244b2ed5fd1d716d25c52e4d54aa4fb0f3c4e9854dbe2"
 dependencies = [
  "lazy_static",
- "windows-sys",
+ "windows-sys 0.36.1",
 ]
 
 [[package]]
@@ -5829,6 +5989,15 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "semver"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f301af10236f6df4160f7c3f04eec6dbc70ace82d23326abad5edee88801c6b6"
+dependencies = [
+ "semver-parser",
+]
+
 [[package]]
 name = "semver"
 version = "1.0.14"
@@ -5838,6 +6007,15 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "semver-parser"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "00b0bef5b7f9e0df16536d3961cfb6e84331c065b4066afb39768d0e319411f7"
+dependencies = [
+ "pest",
+]
+
 [[package]]
 name = "serde"
 version = "1.0.145"
@@ -5989,7 +6167,7 @@ version = "0.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "028f48d513f9678cda28f6e4064755b3fbb2af6acd672f2c209b62323f7aea0f"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "cpufeatures",
  "digest",
 ]
@@ -6000,7 +6178,7 @@ version = "0.10.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f04293dc80c3993519f2d7f6f511707ee7094fe0c6d3406feb330cdb3540eba3"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "cpufeatures",
  "digest",
 ]
@@ -6011,7 +6189,7 @@ version = "0.10.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "82e6b795fe2e3b1e845bafcb27aa35405c4d47cdfc92af5fc8d3002f76cebdc0"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "cpufeatures",
  "digest",
 ]
@@ -6193,6 +6371,18 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "sparsevec"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "928d1ef5df00aec8c5643c2ac37db4dd282763013c0fcc81efbb8e13db8dd8ec"
+dependencies = [
+ "num-traits",
+ "packedvec",
+ "serde",
+ "vob",
+]
+
 [[package]]
 name = "spin"
 version = "0.5.2"
@@ -6647,7 +6837,7 @@ version = "3.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5cdb1ef4eaeeaddc8fbd371e5017057064af0911902ef36b39801f67cc6d79e4"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "fastrand",
  "libc",
  "redox_syscall 0.2.16",
@@ -7165,7 +7355,7 @@ version = "0.1.36"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2fce9567bd60a67d08a16488756721ba392f24f29006402881e43b19aac64307"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "log",
  "pin-project-lite",
  "tracing-attributes",
@@ -7288,13 +7478,22 @@ version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "59547bce71d9c38b83d9c0e92b6066c4253371f15005def0c30d9657f50c7642"
 
+[[package]]
+name = "try_from"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "283d3b89e1368717881a9d51dad843cc435380d8109c9e47d38780a324698d8b"
+dependencies = [
+ "cfg-if 0.1.10",
+]
+
 [[package]]
 name = "twox-hash"
 version = "1.6.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "97fee6b57c6a41524a810daee9286c02d7752c4253064d0b05472833a438f675"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "rand 0.8.5",
  "static_assertions",
 ]
@@ -7587,6 +7786,21 @@ version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f1bddf1187be692e79c5ffeab891132dfb0f236ed36a43c7ed39f1165ee20191"
 
+[[package]]
+name = "vergen"
+version = "7.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "447f9238a4553957277b3ee09d80babeae0811f1b3baefb093de1c0448437a37"
+dependencies = [
+ "anyhow",
+ "cfg-if 1.0.0",
+ "enum-iterator",
+ "getset",
+ "rustversion",
+ "thiserror",
+ "time 0.3.14",
+]
+
 [[package]]
 name = "version_check"
 version = "0.9.4"
@@ -7599,6 +7813,17 @@ version = "0.0.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7b60dcd6a64dd45abf9bd426970c9843726da7fc08f44cd6fcebf68c21220a63"
 
+[[package]]
+name = "vob"
+version = "3.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cbdb3eee5dd38a27129832bca4a3171888e699a6ac36de86547975466997986f"
+dependencies = [
+ "num-traits",
+ "rustc_version 0.3.3",
+ "serde",
+]
+
 [[package]]
 name = "volatile"
 version = "0.3.0"
@@ -7656,7 +7881,7 @@ version = "0.2.83"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "eaf9f5aceeec8be17c128b2e93e031fb8a4d469bb9c4ae2d7dc1888b26887268"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "wasm-bindgen-macro",
 ]
 
@@ -7681,7 +7906,7 @@ version = "0.4.33"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "23639446165ca5a5de86ae1d8896b737ae80319560fbaa4c2887b7da6e7ebd7d"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "js-sys",
  "wasm-bindgen",
  "web-sys",
@@ -7828,6 +8053,27 @@ dependencies = [
  "windows_x86_64_msvc 0.36.1",
 ]
 
+[[package]]
+name = "windows-sys"
+version = "0.42.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5a3e1820f08b8513f676f7ab6c1f99ff312fb97b553d30ff4dd86f9f15728aa7"
+dependencies = [
+ "windows_aarch64_gnullvm",
+ "windows_aarch64_msvc 0.42.0",
+ "windows_i686_gnu 0.42.0",
+ "windows_i686_msvc 0.42.0",
+ "windows_x86_64_gnu 0.42.0",
+ "windows_x86_64_gnullvm",
+ "windows_x86_64_msvc 0.42.0",
+]
+
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.42.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "41d2aa71f6f0cbe00ae5167d90ef3cfe66527d6f613ca78ac8024c3ccab9a19e"
+
 [[package]]
 name = "windows_aarch64_msvc"
 version = "0.36.1"
@@ -7840,6 +8086,12 @@ version = "0.39.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ec7711666096bd4096ffa835238905bb33fb87267910e154b18b44eaabb340f2"
 
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.42.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dd0f252f5a35cac83d6311b2e795981f5ee6e67eb1f9a7f64eb4500fbc4dcdb4"
+
 [[package]]
 name = "windows_i686_gnu"
 version = "0.36.1"
@@ -7852,6 +8104,12 @@ version = "0.39.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "763fc57100a5f7042e3057e7e8d9bdd7860d330070251a73d003563a3bb49e1b"
 
+[[package]]
+name = "windows_i686_gnu"
+version = "0.42.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fbeae19f6716841636c28d695375df17562ca208b2b7d0dc47635a50ae6c5de7"
+
 [[package]]
 name = "windows_i686_msvc"
 version = "0.36.1"
@@ -7864,6 +8122,12 @@ version = "0.39.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7bc7cbfe58828921e10a9f446fcaaf649204dcfe6c1ddd712c5eebae6bda1106"
 
+[[package]]
+name = "windows_i686_msvc"
+version = "0.42.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "84c12f65daa39dd2babe6e442988fc329d6243fdce47d7d2d155b8d874862246"
+
 [[package]]
 name = "windows_x86_64_gnu"
 version = "0.36.1"
@@ -7876,6 +8140,18 @@ version = "0.39.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6868c165637d653ae1e8dc4d82c25d4f97dd6605eaa8d784b5c6e0ab2a252b65"
 
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.42.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bf7b1b21b5362cbc318f686150e5bcea75ecedc74dd157d874d754a2ca44b0ed"
+
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.42.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09d525d2ba30eeb3297665bd434a54297e4170c7f1a44cad4ef58095b4cd2028"
+
 [[package]]
 name = "windows_x86_64_msvc"
 version = "0.36.1"
@@ -7888,6 +8164,12 @@ version = "0.39.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5e4d40883ae9cae962787ca76ba76390ffa29214667a111db9e0a1ad8377e809"
 
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.42.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f40009d85759725a34da6d89a94e63d7bdc50a862acf0dbc7c8e488f1edcb6f5"
+
 [[package]]
 name = "winreg"
 version = "0.10.1"
diff --git a/Cargo.toml b/Cargo.toml
index 77d94f0f37..a960138d4b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -27,6 +27,7 @@ members = [
     "src/meta-srv",
     "src/mito",
     "src/object-store",
+    "src/promql",
     "src/query",
     "src/script",
     "src/servers",
diff --git a/src/promql/Cargo.toml b/src/promql/Cargo.toml
new file mode 100644
index 0000000000..16f7d78b18
--- /dev/null
+++ b/src/promql/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "promql"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+common-error = { path = "../common/error" }
+promql-parser = { git = "https://github.com/GreptimeTeam/promql-parser.git", rev = "71d8a90" }
+snafu = { version = "0.7", features = ["backtraces"] }
diff --git a/src/promql/src/engine.rs b/src/promql/src/engine.rs
new file mode 100644
index 0000000000..910d75d747
--- /dev/null
+++ b/src/promql/src/engine.rs
@@ -0,0 +1,36 @@
+// Copyright 2022 Greptime Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+use std::sync::Arc;
+
+use promql_parser::parser::Value;
+
+use crate::error::Result;
+
+mod evaluator;
+mod functions;
+
+pub use evaluator::*;
+
+pub struct Context {}
+
+pub struct Query {}
+
+pub struct Engine {}
+
+impl Engine {
+    pub fn exec(_ctx: &Context, _q: Query) -> Result<Arc<dyn Value>> {
+        unimplemented!();
+    }
+}
diff --git a/src/promql/src/engine/evaluator.rs b/src/promql/src/engine/evaluator.rs
new file mode 100644
index 0000000000..cb8d3c9f38
--- /dev/null
+++ b/src/promql/src/engine/evaluator.rs
@@ -0,0 +1,29 @@
+// Copyright 2022 Greptime Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+use std::sync::Arc;
+
+use promql_parser::parser::{Expr, Value};
+
+use crate::engine::Context;
+use crate::error::Result;
+
+/// An evaluator evaluates given expressions over given fixed timestamps.
+pub struct Evaluator {}
+
+impl Evaluator {
+    pub fn eval(_ctx: &Context, _expr: &Expr) -> Result<Arc<dyn Value>> {
+        unimplemented!();
+    }
+}
diff --git a/src/promql/src/engine/functions.rs b/src/promql/src/engine/functions.rs
new file mode 100644
index 0000000000..9e0fcc186d
--- /dev/null
+++ b/src/promql/src/engine/functions.rs
@@ -0,0 +1,15 @@
+// Copyright 2022 Greptime Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//! PromQL functions
diff --git a/src/promql/src/error.rs b/src/promql/src/error.rs
new file mode 100644
index 0000000000..14eefab56a
--- /dev/null
+++ b/src/promql/src/error.rs
@@ -0,0 +1,50 @@
+// Copyright 2022 Greptime Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+use std::any::Any;
+
+use common_error::prelude::*;
+
+common_error::define_opaque_error!(Error);
+
+#[derive(Debug, Snafu)]
+#[snafu(visibility(pub))]
+pub enum InnerError {
+    #[snafu(display("Unsupported expr type: {}", name))]
+    UnsupportedExpr { name: String, backtrace: Backtrace },
+}
+
+impl ErrorExt for InnerError {
+    fn status_code(&self) -> StatusCode {
+        use InnerError::*;
+        match self {
+            UnsupportedExpr { .. } => StatusCode::InvalidArguments,
+        }
+    }
+    fn backtrace_opt(&self) -> Option<&Backtrace> {
+        ErrorCompat::backtrace(self)
+    }
+
+    fn as_any(&self) -> &dyn Any {
+        self
+    }
+}
+
+impl From<InnerError> for Error {
+    fn from(e: InnerError) -> Error {
+        Error::new(e)
+    }
+}
+
+pub type Result<T> = std::result::Result<T, Error>;
diff --git a/src/promql/src/lib.rs b/src/promql/src/lib.rs
new file mode 100644
index 0000000000..11415d1838
--- /dev/null
+++ b/src/promql/src/lib.rs
@@ -0,0 +1,16 @@
+// Copyright 2022 Greptime Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+pub mod engine;
+pub mod error;
diff --git a/src/servers/Cargo.toml b/src/servers/Cargo.toml
index 3f7d092721..1912346761 100644
--- a/src/servers/Cargo.toml
+++ b/src/servers/Cargo.toml
@@ -40,12 +40,12 @@ regex = "1.6"
 rustls = "0.20"
 rustls-pemfile = "1.0"
 schemars = "0.8"
-strum = { version = "0.24", features = ["derive"] }
 serde = "1.0"
 serde_json = "1.0"
 session = { path = "../session" }
 snafu = { version = "0.7", features = ["backtraces"] }
 snap = "1"
+strum = { version = "0.24", features = ["derive"] }
 table = { path = "../table" }
 tokio = { version = "1.20", features = ["full"] }
 tokio-rustls = "0.23"