Merge pull request #2672 from dolthub/angela/sql_modes

Document SQL modes

Author: angelamayxie

packages/dolt/content/SUMMARY.md

@@ -89,6 +89,7 @@
   - [MySQL Information Schema](reference/sql/sql-support/information-schema.md)
   - [Collations and Character Sets](reference/sql/sql-support/collations-and-charsets.md)
   - [System Variables](reference/sql/sql-support/system-variables.md)
+  - [SQL Modes](reference/sql/sql-support/sql-modes.md)
   - [Miscellaneous](reference/sql/sql-support/miscellaneous.md)
 - [Supported Clients](reference/sql/supported-clients/README.md)
   - [Programmatic](reference/sql/supported-clients/clients.md)

packages/dolt/content/reference/sql/sql-support/README.md

@@ -22,4 +22,5 @@ This section is divided into five main categories:
 4. [Information Schema](information-schema.md): Dolt support for MySQL information schema
 5. [Collations and Character Sets](collations-and-charsets.md): SQL features for describing and comparing strings
 6. [System Variables](system-variables.md): SQL features for configuring server behavior
-7. [Miscellaneous](miscellaneous.md): miscellaneous SQL features 
+7. [SQL Modes](sql-modes.md): Dolt support for MySQL SQL modes
+8. [Miscellaneous](miscellaneous.md): miscellaneous SQL features 

packages/dolt/content/reference/sql/sql-support/sql-modes.md

@@ -0,0 +1,27 @@
+# SQL Modes
+
+Dolt supports a subset of [SQL modes that MySQL supports](https://dev.mysql.com/doc/refman/8.4/en/sql-mode.html).
+SQL modes are added upon request, so please [file an issue](https://github.com/dolthub/dolt/issues) if a SQL mode you need is missing.
+
+**Currently supporting 4 of 18 MySQL SQL Modes.**
+
+| Mode                                                           | Parsed | Supported |
+|:---------------------------------------------------------------|:-------|:----------|
+| `ALLOW_INVALID_DATES`                                          | ❌     | ❌        |
+| `ANSI_QUOTES`                                                  | ✅     | ✅        |
+| `ERROR_FOR_DIVISION_BY_ZERO`                                   | ❌     | ❌        |
+| `HIGH_NOT_PRECEDENCE`                                          | ❌     | ❌        |
+| `IGNORE_SPACE`                                                 | ❌     | ❌        |
+| `NO_AUTO_VALUE_ON_ZERO`                                        | ✅     | ✅        |
+| `NO_BACKSLASH_ESCAPES`                                         | ❌     | ❌        |
+| `NO_DIR_IN_CREATE`                                             | ❌     | ❌        |
+| `NO_ENGINE_SUBSTITUION`                                        | ✅     | ❌        |
+| `NO_UNSIGNED_SUBTRACTION`                                      | ❌     | ❌        |
+| `NO_ZERO_IN_DATE`                                              | ❌     | ❌        |
+| `ONLY_FULL_GROUP_BY`                                           | ✅     | ✅        |
+| `PAD_CHAR_TO_FULL_LENGTH`                                      | ❌     | ❌        |
+| `PIPES_AS_CONCAT`                                              | ✅     | ✅        |
+| `REAL_AS_FLOAT`                                                | ❌     | ❌        |
+| `STRICT_ALL_TABLES`                                            | ❌     | ❌        |
+| `STRICT_TRANS_TABLES`                                          | ✅     | ❌        |
+| `TIME_TRUNCATE_FRACTIONAL`                                     | ❌     | ❌        |