Endtoend tests: bunch of ydb e2e tests + some engine and types fixes

[1NepuNep1]

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[Copilot]

Pull Request Overview

This PR adds comprehensive end-to-end test coverage for YDB database engine support, including tests for DDL operations, data types, built-in functions, and various SQL query patterns. The changes also include engine and type fixes to properly support YDB-specific syntax and features.

• DDL operations: table creation, alteration (rename, add/drop columns, alter types), and dropping tables with IF EXISTS
• Data type mappings for YDB's type system (numeric, text, datetime, JSON, UUID, boolean types)
• YDB-specific features: table partitioning, views, and built-in functions
• Multiple SQL driver support: both stdlib and ydb-go-sdk packages

Reviewed Changes

Copilot reviewed 299 out of 1136 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
internal/endtoend/testdata/ddl_drop_table_if_exists/ydb/stdlib/go/db.go	Generated database interface for DROP TABLE IF EXISTS test with stdlib driver
internal/endtoend/testdata/ddl_drop_table/ydb/*/*	Test files for DROP TABLE statement across multiple driver variants
internal/endtoend/testdata/ddl_create_table_partition/ydb/*/*	Test files for table creation with AUTO_PARTITIONING configuration
internal/endtoend/testdata/ddl_create_table/ydb/*/*	Basic table creation test files
internal/endtoend/testdata/ddl_alter_table_rename/ydb/*/*	Test files for ALTER TABLE RENAME operations
internal/endtoend/testdata/ddl_alter_table_drop_column/ydb/*/*	Test files for ALTER TABLE DROP COLUMN operations
internal/endtoend/testdata/ddl_alter_table_column_drop_not_null/ydb/*/*	Test files for dropping NOT NULL constraints
internal/endtoend/testdata/ddl_alter_table_alter_type/ydb/*/*	Test files for column type alterations using DROP/ADD pattern
internal/endtoend/testdata/ddl_alter_table_add_column/ydb/*/*	Test files for ALTER TABLE ADD COLUMN operations
internal/endtoend/testdata/datatype/ydb/ydb-go-sdk/*/*	Comprehensive data type mapping tests for YDB types
internal/endtoend/testdata/create_view/ydb/*/*	Test files for CREATE VIEW and DROP VIEW operations
internal/endtoend/testdata/count_star/ydb/*/*	Test files for COUNT(*) aggregate function
internal/endtoend/testdata/comparisons/ydb/*/*	Test files for comparison operators (>, <, >=, <=, !=, <>, =)
internal/endtoend/testdata/comment_syntax/ydb/*/*	Test files for SQL comment syntax support (-- and /* */)
internal/endtoend/testdata/column_as/ydb/*/*	Test files for column aliasing with AS keyword
internal/endtoend/testdata/column_alias/ydb/*/*	Test files for complex column aliases in SELECT statements
internal/endtoend/testdata/coalesce*/ydb/*/*	Test files for COALESCE function with various scenarios
internal/endtoend/testdata/cast*/ydb/*/*	Test files for CAST operations including NULL and parameter casting
internal/endtoend/testdata/case*/ydb/*/*	Test files for CASE expressions with various data types
internal/endtoend/testdata/builtins/ydb/*/*	Extensive tests for YDB built-in functions (Math, DateTime, Unicode modules)
internal/endtoend/testdata/between_args/ydb/*/*	Test files for BETWEEN operator with parameters
internal/endtoend/testdata/array*/ydb/*/*	Test files for array literals and IN operator with arrays

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[Copilot]

Pull Request Overview

Copilot reviewed 299 out of 1138 changed files in this pull request and generated no new comments.

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