Use squiggly heredoc to strip odd indentation in the executed SQL

Before:

```
LOG:  execute <unnamed>:             SELECT t.oid, t.typname
                    FROM pg_type as t
                    WHERE t.typname IN ('int2', 'int4', 'int8', 'oid', 'float4', 'float8', 'bool')

LOG:  execute <unnamed>:               SELECT t.oid, t.typname, t.typelem, t.typdelim, t.typinput, r.rngsubtype, t.typtype, t.typbasetype
                      FROM pg_type as t
                      LEFT JOIN pg_range as r ON oid = rngtypid
                      WHERE
                        t.typname IN ('int2', 'int4', 'int8', 'oid', 'float4', 'float8', 'text', 'varchar', 'char', 'name', 'bpchar', 'bool', 'bit', 'varbit', 'timestamptz', 'date', 'money', 'bytea', 'point', 'hstore', 'json', 'jsonb', 'cidr', 'inet', 'uuid', 'xml', 'tsvector', 'macaddr', 'citext', 'ltree', 'interval', 'path', 'line', 'polygon', 'circle', 'lseg', 'box', 'time', 'timestamp', 'numeric')
                        OR t.typtype IN ('r', 'e', 'd')
                        OR t.typinput::varchar = 'array_in'
                        OR t.typelem != 0

LOG:  statement: SHOW TIME ZONE
LOG:  statement: SELECT 1
LOG:  execute <unnamed>:               SELECT COUNT(*)
                      FROM pg_class c
                      LEFT JOIN pg_namespace n ON n.oid = c.relnamespace
                      WHERE c.relkind IN ('r','v','m') -- (r)elation/table, (v)iew, (m)aterialized view
                      AND c.relname = 'accounts'
                      AND n.nspname = ANY (current_schemas(false))
```

After:

```
LOG:  execute <unnamed>: SELECT t.oid, t.typname
        FROM pg_type as t
        WHERE t.typname IN ('int2', 'int4', 'int8', 'oid', 'float4', 'float8', 'bool')

LOG:  execute <unnamed>: SELECT t.oid, t.typname, t.typelem, t.typdelim, t.typinput, r.rngsubtype, t.typtype, t.typbasetype
        FROM pg_type as t
        LEFT JOIN pg_range as r ON oid = rngtypid
                      WHERE
                        t.typname IN ('int2', 'int4', 'int8', 'oid', 'float4', 'float8', 'text', 'varchar', 'char', 'name', 'bpchar', 'bool', 'bit', 'varbit', 'timestamptz', 'date', 'money', 'bytea', 'point', 'hstore', 'json', 'jsonb', 'cidr', 'inet', 'uuid', 'xml', 'tsvector', 'macaddr', 'citext', 'ltree', 'interval', 'path', 'line', 'polygon', 'circle', 'lseg', 'box', 'time', 'timestamp', 'numeric')
                        OR t.typtype IN ('r', 'e', 'd')
                        OR t.typinput::varchar = 'array_in'
                        OR t.typelem != 0

LOG:  statement: SHOW TIME ZONE
LOG:  statement: SELECT 1
LOG:  execute <unnamed>: SELECT COUNT(*)
        FROM pg_class c
        LEFT JOIN pg_namespace n ON n.oid = c.relnamespace
        WHERE c.relkind IN ('r','v','m') -- (r)elation/table, (v)iew, (m)aterialized view
        AND c.relname = 'accounts'
        AND n.nspname = ANY (current_schemas(false))
```

2 files changed, 28 insertions, 38 deletions

diff --git a/activerecord/test/schema/mysql2_specific_schema.rb b/activerecord/test/schema/mysql2_specific_schema.rb
index ccca9a2d9b..61e9bc9af7 100644
--- a/activerecord/test/schema/mysql2_specific_schema.rb
+++ b/activerecord/test/schema/mysql2_specific_schema.rb
@@ -54,33 +54,25 @@ ActiveRecord::Schema.define do
     t.binary :binary_column,    limit: 1
   end
 
-  ActiveRecord::Base.connection.execute <<-SQL
-DROP PROCEDURE IF EXISTS ten;
-SQL
-
-  ActiveRecord::Base.connection.execute <<-SQL
-CREATE PROCEDURE ten() SQL SECURITY INVOKER
-BEGIN
-	select 10;
-END
-SQL
+  create_table :enum_tests, id: false, force: true do |t|
+    t.column :enum_column, "ENUM('text','blob','tiny','medium','long','unsigned','bigint')"
+  end
 
-  ActiveRecord::Base.connection.execute <<-SQL
-DROP PROCEDURE IF EXISTS topics;
-SQL
+  execute "DROP PROCEDURE IF EXISTS ten"
 
-  ActiveRecord::Base.connection.execute <<-SQL
-CREATE PROCEDURE topics(IN num INT) SQL SECURITY INVOKER
-BEGIN
-  select * from topics limit num;
-END
-SQL
+  execute <<~SQL
+    CREATE PROCEDURE ten() SQL SECURITY INVOKER
+    BEGIN
+      SELECT 10;
+    END
+  SQL
 
-  ActiveRecord::Base.connection.drop_table "enum_tests", if_exists: true
+  execute "DROP PROCEDURE IF EXISTS topics"
 
-  ActiveRecord::Base.connection.execute <<-SQL
-CREATE TABLE enum_tests (
-  enum_column ENUM('text','blob','tiny','medium','long','unsigned','bigint')
-)
-SQL
+  execute <<~SQL
+    CREATE PROCEDURE topics(IN num INT) SQL SECURITY INVOKER
+    BEGIN
+      SELECT * FROM topics LIMIT num;
+    END
+  SQL
 end
diff --git a/activerecord/test/schema/oracle_specific_schema.rb b/activerecord/test/schema/oracle_specific_schema.rb
index bc1e45ca80..08c6e24555 100644
--- a/activerecord/test/schema/oracle_specific_schema.rb
+++ b/activerecord/test/schema/oracle_specific_schema.rb
@@ -7,23 +7,21 @@ ActiveRecord::Schema.define do
   execute "drop table defaults" rescue nil
   execute "drop sequence defaults_seq" rescue nil
 
-  execute <<-SQL
-create table test_oracle_defaults (
-  id integer not null primary key,
-  test_char char(1) default 'X' not null,
-  test_string varchar2(20) default 'hello' not null,
-  test_int integer default 3 not null
-)
+  execute <<~SQL
+    create table test_oracle_defaults (
+      id integer not null primary key,
+      test_char char(1) default 'X' not null,
+      test_string varchar2(20) default 'hello' not null,
+      test_int integer default 3 not null
+    )
   SQL
 
-  execute <<-SQL
-create sequence test_oracle_defaults_seq minvalue 10000
-  SQL
+  execute "create sequence test_oracle_defaults_seq minvalue 10000"
 
   execute "create sequence companies_nonstd_seq minvalue 10000"
 
-  execute <<-SQL
-  CREATE TABLE defaults (
+  execute <<~SQL
+    CREATE TABLE defaults (
       id integer not null,
       modified_date date default sysdate,
       modified_date_function date default sysdate,
@@ -34,7 +32,7 @@ create sequence test_oracle_defaults_seq minvalue 10000
       char1 varchar2(1) default 'Y',
       char2 varchar2(50) default 'a varchar field',
       char3 clob default 'a text field'
-  )
+    )
   SQL
   execute "create sequence defaults_seq minvalue 10000"
 end