Create sqlalchemy-sql-like.md

sqlalchemy/sqlalchemy-sql-like.md

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+# SQLAlchemy query LIKE statement
+
+SQLAlchemy provides a number of methods for generating a `LIKE` clause in a query:
+
+#### like
+```python
+select(User).where(User.name.like(f'%{some_term}%'))
+```
+
+#### contains
+Search term inside % wildcards
+```python
+select(User).where(User.name.contains('i'))
+```
+
+#### startswith
+Search term followed by % wildcard
+```python
+select(User).where(User.name.startswith('a'))
+```
+
+#### endswith
+Search term preceeded by % wildcard
+```python
+select(User).where(User.name.endswith('e'))
+```
+
+Note that each of these has a case-insensitivt counterpart:
+* `like` -> `ilike`
+* `contains` -> `icontains`
+* `startswith` -> `istartswith`
+* `endswith` -> `iendswith`
+
+Ref: https://stackoverflow.com/a/77111773