Remove python based posgres comparsion integration-test (#5031)

* Remove python based posgres comparsion function

* Remove old docs

.github/workflows/rust.yml

@@ -186,70 +186,6 @@ jobs:
       - name: Verify Working Directory Clean
         run: git diff --exit-code
 
-  integration-test:
-    name: "Compare to postgres"
-    needs: [ linux-build-lib ]
-    runs-on: ubuntu-latest
-    services:
-      postgres:
-        image: postgres:15
-        env:
-          POSTGRES_PASSWORD: postgres
-          POSTGRES_DB: db_test
-          POSTGRES_INITDB_ARGS: --encoding=UTF-8 --lc-collate=C --lc-ctype=C
-        ports:
-          - 5432/tcp
-        options: >-
-          --health-cmd pg_isready
-          --health-interval 10s
-          --health-timeout 5s
-          --health-retries 5
-    steps:
-      - uses: actions/checkout@v3
-        with:
-          submodules: true
-      - name: Setup toolchain
-        run: |
-          rustup toolchain install stable
-          rustup default stable
-      - uses: actions/setup-python@v4
-        with:
-          python-version: "3.10"
-      - name: Install Python dependencies
-        run: |
-          python -m pip install --upgrade pip wheel
-          # setuptools is normally only intended to serve as a build-time dependency
-          # but since numpy uses it internally and currently accessing methods that
-          # are removed from newer versions of setuptools we have a pin on it as well.
-          #
-          # TODO: this should be removed as soon as https://github.com/numpy/numpy/issues/22623
-          # is resolved and numpy version in integration-tests/requirements.txt is updated.
-          python -m pip install --upgrade "setuptools<=65.5.1"
-          python -m pip install -r integration-tests/requirements.txt
-      - name: Allow access of psql
-        run: |
-          # make sure psql can access the server
-          echo "$POSTGRES_HOST:$POSTGRES_PORT:$POSTGRES_DB:$POSTGRES_USER:$POSTGRES_PASSWORD" | tee ~/.pgpass
-          chmod 0600 ~/.pgpass
-          psql -d "$POSTGRES_DB" -h "$POSTGRES_HOST" -p "$POSTGRES_PORT" -U "$POSTGRES_USER" -f integration-tests/create_test_table_postgres.sql
-          psql -d "$POSTGRES_DB" -h "$POSTGRES_HOST" -p "$POSTGRES_PORT" -U "$POSTGRES_USER" -c "\copy test FROM '$(pwd)/testing/data/csv/aggregate_test_100.csv' WITH (FORMAT csv, HEADER true);"
-        env:
-          POSTGRES_HOST: localhost
-          POSTGRES_PORT: ${{ job.services.postgres.ports[5432] }}
-          POSTGRES_DB: db_test
-          POSTGRES_USER: postgres
-          POSTGRES_PASSWORD: postgres
-      - name: Build datafusion-cli
-        run: (cd datafusion-cli && cargo build)
-      - name: Test Psql Parity
-        run: python -m pytest -v integration-tests/test_psql_parity.py
-        env:
-          POSTGRES_HOST: localhost
-          POSTGRES_PORT: ${{ job.services.postgres.ports[5432] }}
-          POSTGRES_DB: db_test
-          POSTGRES_USER: postgres
-          POSTGRES_PASSWORD: postgres
-
   sqllogictest-postgres:
     name: "Run sqllogictest with Postgres runner"
     needs: [ linux-build-lib ]

docs/source/contributor-guide/index.md

@@ -141,55 +141,6 @@ The [sqllogictests](../../../datafusion/core/tests/sqllogictests) also validate
 Data Driven tests have many benefits including being easier to write and maintain. We are in the process of [migrating sql_integration tests](https://github.com/apache/arrow-datafusion/issues/4460) and encourage
 you to add new tests using sqllogictests if possible.
 
-### SQL / Postgres Integration Tests
-
-The [integration-tests](../../../integration-tests) directory contains a harness that runs certain queries against both postgres and datafusion and compares results
-
-#### setup environment
-
-```shell
-export POSTGRES_DB=postgres
-export POSTGRES_USER=postgres
-export POSTGRES_HOST=localhost
-export POSTGRES_PORT=5432
-```
-
-#### Install dependencies
-
-```shell
-# Install dependencies
-python -m pip install --upgrade pip setuptools wheel
-python -m pip install -r integration-tests/requirements.txt
-
-# setup environment
-POSTGRES_DB=postgres POSTGRES_USER=postgres POSTGRES_HOST=localhost POSTGRES_PORT=5432 python -m pytest -v integration-tests/test_psql_parity.py
-
-# Create
-psql -d "$POSTGRES_DB" -h "$POSTGRES_HOST" -p "$POSTGRES_PORT" -U "$POSTGRES_USER" -c 'CREATE TABLE IF NOT EXISTS test (
-  c1 character varying NOT NULL,
-  c2 integer NOT NULL,
-  c3 smallint NOT NULL,
-  c4 smallint NOT NULL,
-  c5 integer NOT NULL,
-  c6 bigint NOT NULL,
-  c7 smallint NOT NULL,
-  c8 integer NOT NULL,
-  c9 bigint NOT NULL,
-  c10 character varying NOT NULL,
-  c11 double precision NOT NULL,
-  c12 double precision NOT NULL,
-  c13 character varying NOT NULL
-);'
-
-psql -d "$POSTGRES_DB" -h "$POSTGRES_HOST" -p "$POSTGRES_PORT" -U "$POSTGRES_USER" -c "\copy test FROM '$(pwd)/testing/data/csv/aggregate_test_100.csv' WITH (FORMAT csv, HEADER true);"
-```
-
-#### Invoke the test runner
-
-```shell
-python -m pytest -v integration-tests/test_psql_parity.py
-```
-
 ## Benchmarks
 
 ### Criterion Benchmarks