From 8b267a321c8f25fc3b887f8c5697aa3ee6a47f9e Mon Sep 17 00:00:00 2001
From: Lukas Eder <lukas.eder@gmail.com>
Date: Mon, 30 Sep 2019 11:09:31 +0200
Subject: [PATCH] [jOOQ/jOOQ#8524] Add support for CREATE TEMPORARY TABLE IF
 NOT EXISTS

---
 jOOQ/src/main/java/org/jooq/DSLContext.java   | 24 +++++++++++++
 jOOQ/src/main/java/org/jooq/impl/DSL.java     | 36 +++++++++++++++++--
 .../java/org/jooq/impl/DefaultDSLContext.java | 15 ++++++++
 .../main/java/org/jooq/impl/ParserImpl.java   |  6 ++--
 4 files changed, 76 insertions(+), 5 deletions(-)

diff --git a/jOOQ/src/main/java/org/jooq/DSLContext.java b/jOOQ/src/main/java/org/jooq/DSLContext.java
index e4b36e7334..ede59cf2b5 100644
--- a/jOOQ/src/main/java/org/jooq/DSLContext.java
+++ b/jOOQ/src/main/java/org/jooq/DSLContext.java
@@ -8694,6 +8694,30 @@ public interface DSLContext extends Scope , AutoCloseable  {
     @Support({ MARIADB, MYSQL, POSTGRES })
     CreateTableColumnStep createTemporaryTable(Table<?> table);
 
+    /**
+     * Create a new DSL <code>CREATE TEMPORARY TABLE IF NOT EXISTS</code> statement.
+     *
+     * @see DSL#createTemporaryTableIfNotExists(String)
+     */
+    @Support({ MARIADB, MYSQL, POSTGRES })
+    CreateTableColumnStep createTemporaryTableIfNotExists(String table);
+
+    /**
+     * Create a new DSL <code>CREATE TEMPORARY TABLE IF NOT EXISTS</code> statement.
+     *
+     * @see DSL#createTemporaryTableIfNotExists(Name)
+     */
+    @Support({ MARIADB, MYSQL, POSTGRES })
+    CreateTableColumnStep createTemporaryTableIfNotExists(Name table);
+
+    /**
+     * Create a new DSL <code>CREATE TEMPORARY TABLE IF NOT EXISTS</code> statement.
+     *
+     * @see DSL#createTemporaryTableIfNotExists(Table)
+     */
+    @Support({ MARIADB, MYSQL, POSTGRES })
+    CreateTableColumnStep createTemporaryTableIfNotExists(Table<?> table);
+
     /**
      * Create a new DSL <code>CREATE GLOBAL TEMPORARY TABLE</code> statement.
      *
diff --git a/jOOQ/src/main/java/org/jooq/impl/DSL.java b/jOOQ/src/main/java/org/jooq/impl/DSL.java
index 4bbed50aa6..773c2f0a65 100644
--- a/jOOQ/src/main/java/org/jooq/impl/DSL.java
+++ b/jOOQ/src/main/java/org/jooq/impl/DSL.java
@@ -6693,7 +6693,7 @@ public class DSL {
     }
 
     /**
-     * Create a new DSL <code>CREATE GLOBAL TEMPORARY TABLE</code> statement.
+     * Create a new DSL <code>CREATE TEMPORARY TABLE</code> statement.
      *
      * @see DSLContext#createTemporaryTable(String)
      */
@@ -6703,7 +6703,7 @@ public class DSL {
     }
 
     /**
-     * Create a new DSL <code>CREATE GLOBAL TEMPORARY TABLE</code> statement.
+     * Create a new DSL <code>CREATE TEMPORARY TABLE</code> statement.
      *
      * @see DSLContext#createTemporaryTable(Name)
      */
@@ -6713,7 +6713,7 @@ public class DSL {
     }
 
     /**
-     * Create a new DSL <code>CREATE GLOBAL TEMPORARY TABLE</code> statement.
+     * Create a new DSL <code>CREATE TEMPORARY TABLE</code> statement.
      *
      * @see DSLContext#createTemporaryTable(Table)
      */
@@ -6722,6 +6722,36 @@ public class DSL {
         return dsl().createTemporaryTable(table);
     }
 
+    /**
+     * Create a new DSL <code>CREATE TEMPORARY TABLE</code> statement.
+     *
+     * @see DSLContext#createTemporaryTableIfNotExists(String)
+     */
+    @Support({ MARIADB, MYSQL, POSTGRES })
+    public static CreateTableColumnStep createTemporaryTableIfNotExists(String table) {
+        return dsl().createTemporaryTableIfNotExists(table);
+    }
+
+    /**
+     * Create a new DSL <code>CREATE TEMPORARY TABLE</code> statement.
+     *
+     * @see DSLContext#createTemporaryTableIfNotExists(Name)
+     */
+    @Support({ MARIADB, MYSQL, POSTGRES })
+    public static CreateTableColumnStep createTemporaryTableIfNotExists(Name table) {
+        return dsl().createTemporaryTableIfNotExists(table);
+    }
+
+    /**
+     * Create a new DSL <code>CREATE TEMPORARY TABLE</code> statement.
+     *
+     * @see DSLContext#createTemporaryTableIfNotExists(Table)
+     */
+    @Support({ MARIADB, MYSQL, POSTGRES })
+    public static CreateTableColumnStep createTemporaryTableIfNotExists(Table<?> table) {
+        return dsl().createTemporaryTableIfNotExists(table);
+    }
+
     /**
      * Create a new DSL <code>CREATE GLOBAL TEMPORARY TABLE</code> statement.
      *
diff --git a/jOOQ/src/main/java/org/jooq/impl/DefaultDSLContext.java b/jOOQ/src/main/java/org/jooq/impl/DefaultDSLContext.java
index 8a33507223..be89f2c2fe 100644
--- a/jOOQ/src/main/java/org/jooq/impl/DefaultDSLContext.java
+++ b/jOOQ/src/main/java/org/jooq/impl/DefaultDSLContext.java
@@ -3127,6 +3127,21 @@ public class DefaultDSLContext extends AbstractScope implements DSLContext, Seri
         return new CreateTableImpl(configuration(), table, true, false);
     }
 
+    @Override
+    public CreateTableColumnStep createTemporaryTableIfNotExists(String table) {
+        return createTemporaryTableIfNotExists(name(table));
+    }
+
+    @Override
+    public CreateTableColumnStep createTemporaryTableIfNotExists(Name table) {
+        return createTemporaryTableIfNotExists(table(table));
+    }
+
+    @Override
+    public CreateTableColumnStep createTemporaryTableIfNotExists(Table<?> table) {
+        return new CreateTableImpl(configuration(), table, true, true);
+    }
+
     @Override
     public CreateTableColumnStep createGlobalTemporaryTable(String table) {
         return createGlobalTemporaryTable(name(table));
diff --git a/jOOQ/src/main/java/org/jooq/impl/ParserImpl.java b/jOOQ/src/main/java/org/jooq/impl/ParserImpl.java
index c2549d00d6..22a3045d9a 100644
--- a/jOOQ/src/main/java/org/jooq/impl/ParserImpl.java
+++ b/jOOQ/src/main/java/org/jooq/impl/ParserImpl.java
@@ -3103,7 +3103,7 @@ final class ParserImpl implements Parser {
     }
 
     private static final DDLQuery parseCreateTable(ParserContext ctx, boolean temporary) {
-        boolean ifNotExists = !temporary && parseKeywordIf(ctx, "IF NOT EXISTS");
+        boolean ifNotExists = parseKeywordIf(ctx, "IF NOT EXISTS");
         Table<?> tableName = DSL.table(parseTableName(ctx).getQualifiedName());
         CreateTableCommentStep commentStep;
         CreateTableStorageStep storageStep;
@@ -3383,7 +3383,9 @@ final class ParserImpl implements Parser {
             ctas = true;
 
         CreateTableColumnStep columnStep = ifNotExists
-            ? ctx.dsl.createTableIfNotExists(tableName)
+            ? temporary
+                ? ctx.dsl.createTemporaryTableIfNotExists(tableName)
+                : ctx.dsl.createTableIfNotExists(tableName)
             : temporary
                 ? ctx.dsl.createTemporaryTable(tableName)
                 : ctx.dsl.createTable(tableName);