convert more textile to markdown

Author: daxim

s/plsql.md

@@ -8,7 +8,7 @@ Examples assume the following table structure:
         accessed_at DATE,
         superuser NUMBER(1,0)
     );
-    
+
     INSERT INTO users VALUES ('janihur',  sysdate,      0);
     INSERT INTO users VALUES ('petdance', sysdate - 12, 1);
     INSERT INTO users VALUES ('albundy',  sysdate - 3,  0);
@@ -28,11 +28,11 @@ Static SQL leaves no room for SQL injection.
         RETURN v_accessed_at;
     END;
     /
- 
+
 
     SELECT user_access('janihur')
       AS "JANIHUR LAST SEEN" FROM DUAL;
-    
+
     JANIHUR LAST SEEN
     -------------------
     2011-08-03 17:11:24
@@ -108,9 +108,9 @@ Instead use bind variables:
 Implicit Data Type Conversion Injection
 ---------------------------------------
 
-Also NLS session parameters (NLS_DATE_FORMAT, NLS_TIMESTAMP_FORMAT, NLS_TIMESTAMP_TZ_FORMAT, NLS_NUMERIC_CHARACTER) can be used to modify or inject SQL statements.
+Also NLS session parameters (`NLS_DATE_FORMAT`, `NLS_TIMESTAMP_FORMAT`, `NLS_TIMESTAMP_TZ_FORMAT`, `NLS_NUMERIC_CHARACTER`) can be used to modify or inject SQL statements.
 
-In next example data type conversion takes place when @p_since@ is implicitly converted to a string for concatenation. Note how the value of NLS_DATE_FORMAT affects to the query string in users_since()-function !
+In next example data type conversion takes place when `p_since` is implicitly converted to a string for concatenation. Note how the value of `NLS_DATE_FORMAT` affects to the query string in `users_since()` function!
 
     ALTER SESSION SET NLS_DATE_FORMAT = 'YYYY-MM-DD HH24:MI:SS';
 
@@ -158,10 +158,10 @@ In next example data type conversion takes place when @p_since@ is implicitly co
     --------
     petdance
 
-The remedy is to set the format modifier explicitly: @to_char(p_since, 'YYYY-MM-DD')@.
+The remedy is to set the format modifier explicitly: `to_char(p_since, 'YYYY-MM-DD')`.
 
     ALTER SESSION SET NLS_DATE_FORMAT = 'YYYY-MM-DD HH24:MI:SS';
-    
+
     CREATE OR REPLACE TYPE userlist_t AS TABLE OF VARCHAR2(8);
     /
 
@@ -183,14 +183,14 @@ The remedy is to set the format modifier explicitly: @to_char(p_since, 'YYYY-MM-
     END;
     /
 
-Now the value of NLS parameter @NLS_DATE_FORMAT@ is ignored during the query.
+Now the value of NLS parameter `NLS_DATE_FORMAT` is ignored during the query.
 
     ALTER SESSION SET NLS_DATE_FORMAT = 'YYYY-MM-DD"SUPRISE!"';
     SELECT COLUMN_VALUE AS "REGULARS" FROM TABLE(users_since(sysdate - 30));
-    
+
     v_query = SELECT username FROM users WHERE superuser = 0 and accessed_at >
     '2011-07-04' order by accessed_at desc
-    
+
     REGULARS
     --------
     janihur

s/postgresql.md

@@ -24,7 +24,7 @@ For such a simple case, you're actually better off writing a pure SQL function:
         SELECT accessed_at FROM users WHERE username = $1;
     $$;
 
-But sometimes you have to do more complicated things. Perhaps you dynamically add @WHERE@ clause expressions based on input. In such cases, you'll end up using PL/pgSQL's @EXECUTE@ syntax. Here's an example with an SQL injection vulnerability:
+But sometimes you have to do more complicated things. Perhaps you dynamically add `WHERE` clause expressions based on input. In such cases, you'll end up using PL/pgSQL's `EXECUTE` syntax. Here's an example with an SQL injection vulnerability:
 
     CREATE OR REPLACE FUNCTION get_users(
         p_column TEXT,
@@ -41,7 +41,7 @@ But sometimes you have to do more complicated things. Perhaps you dynamically ad
     END;
     $$;
 
-Both the @p_column@ and the @p_value@ arguments are vulnerable. The way to avoid this problem is to use the @quote_ident()@ function to quote an SQL identifier (@p_column@ in this case) and @quote_lteral()@ to quote a literal value:
+Both the `p_column` and the `p_value` arguments are vulnerable. The way to avoid this problem is to use the `quote_ident()` function to quote an SQL identifier (`p_column` in this case) and `quote_lteral()` to quote a literal value:
 
     CREATE OR REPLACE FUNCTION get_users(
         p_column TEXT,